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 [Search a list of Patent Appplications for class  14]   CLASS 14,BRIDGES
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SECTION I - CLASS DEFINITION

This class includes all structures by which a roadway or railroad is carried across a space intervening between supports and all structures, such as gates, etc., whose operation is dependent upon the operation of the bridge (as in drawbridges). Included in this class are both construction techniques and methods for building a bridge, regardless of type.

There has been no attempt in this classification to separate lateral bracing. Sometimes, as in suspension bridges, the lateral bracing is more or less peculiar to the class of bridge structure. In some cases there appears to be no distinction in either structure or function between bracing intended to strengthen a bridge against wind pressure and that intended to support weight, and they have all been classified together. Except as provided for under ARCH and SUSPENSION bridges, support at the approaches (land to bridge transition) are generally considered to be a retaining wall-type structure.

SECTION II - REFERENCES TO OTHER CLASSES

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49Movable or Removable Closures,   appropriate subclasses for closures of the type provided for.
52Static Structures (e.g., Buildings),   appropriate subclasses for in situ erected building structures of more general application, particularly subclasses 86 -89 for a vertically curved arch, subclasses 169.1-170 for a building with defined terrain and feature, subclasses 174-176 for buildings with traffic guiding feature, subclasses 177-181 for building or building components with wear or friction-type traffic surface, subclasses 262 and 263 for horizontal barrier resting on vertical supports, and subclasses 639-644 for curvilinear or peaked truss.
73Measuring and Testing,   appropriate subclasses for instruments used to measure, for example, deflection.
104Railways,   subclasses 35 -47 for turntables, subclass 124 for elevated structure for supporting an overhead railroad, and subclasses 275-277 for devices for crossing of railroad tracks by fire hose to avoid interference with car movement.
105Railway Rolling Stock,   subclasses 458 and 459 for bridging devices between adjacent coupled cars to permit safe passage therebetween.
106Compositions: Coating or Plastic,   appropriate subclasses for coating compositions.
109Safes, Bank Protection, or a Related Device,   subclass 87 for movable or removable floor sections for bridging floor recesses necessitated in accommodating the opening of a vault door.
187Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle,   appropriate subclasses for apparatus having a vertically shiftable load underlying supporting surface driven along a guided path and which moves an entire detachable load between vertically spaced locations.
212Traversing Hoists,   appropriate subclasses for apparatus used to lift and horizontally move a detachable load.
249Static Molds,   subclass 1 for molds for forming bridge structure in situ.
254Implements or Apparatus for Applying Pushing or Pulling Force,   appropriate subclasses for apparatus used to apply a pushing or pulling force to a detachable load.
256Fences,   appropriate subclasses for structure analogous to hand rails on bridges.
404Road Structure, Process, or Apparatus,   appropriate subclasses for a trafficable surface on a deck and expansion joint.
405Hydraulic and Earth Engineering,   appropriate subclasses for piers which do not include specific bridge or bridge coacting structure, e.g., drain pipes to conduct water runoff away from a bridge roadway, and especially subclasses 195.1 -228 for such piers located in a marine environment, subclasses 229-257 for the residue of the piers of this (405) class and subclasses 284-287 for a retaining wall-type abutment (at the bridge approach) supporting a superstructure end.
414Material or Article Handling,   appropriate subclasses for apparatus used to place or displace a component in a particular manner or with reference to a particular support and for ramps loading to or from a marine vessel.
446Amusement Devices: Toys,   subclasses 476 -478 for a toy bridge.

SUBCLASSES

[List of Patents for class 14 subclass 2]    2TRUSS AND ARCH:
 This subclass is indented under the class definition.  Bridges combining principle of the truss (i.e., framework with distinct reinforcement for tension and compression, e.g., Fink, W, Hip, Bowstring type) with that of the arch, the truss and arch being connected, but usually being clearly distinguishable as separate structures.

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25,for arches including the principle of the truss in the structure of the arch.
  
[List of Patents for class 14 subclass 2.4]    2.4TRANSPORTABLE:
 This subclass is indented under the class definition.  Bridge intended to span between a first and second land mass (or associated base), which bridge is movable to a site to be spanned.

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414Material or Article Handling,   subclasses 137.1-143.2 for a bridge or gangway with means to effect movement of cargo to or from a marine vessel and for the combination of a bridge or gangway with a ship and with additional material handling structure excluded from Class 14 (or from Class 114).
  
[List of Patents for class 14 subclass 2.5]    2.5Having launching means:
 This subclass is indented under subclass 2.4.  Bridge having structure which first spans the area to be bridged and on which the bridge itself slides or rolls into position.
  
[List of Patents for class 14 subclass 2.6]    2.6Floating:
 This subclass is indented under subclass 2.4.  Bridge including means adapted to engage flowable terrain intermediate the first and second land mass, which means is made buoyant to rest on the flowable material and support a portion of the bridge thereon.

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27,for floating bridges.

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114Ships,   subclasses 264 -266 and 382 for a floating platform.
440Marine Propulsion,   subclasses 12.5-12.7 for a self-propelled marine vehicle having land and water propulsion means (e.g., amphibious vehicles).
  
[List of Patents for class 14 subclass 3]    3TRUSS:
 This subclass is indented under the class definition.  Bridges of the type comprising a framework having distinct supporting members for tension or compression (e.g., Howe, Fink, W, Bowstring type).
(1) Note. Included in this subclass are trusses with a prestressing feature.

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2,for combination arch and truss.
25,for compound arches.

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52Static Structures (e.g., Buildings),   subclasses 223.1 -223.14 for a structure having prestressing feature.
104Railways,   subclass 124 for similar features on elevated railways.
  
[List of Patents for class 14 subclass 4]    4Arrangement:
 This subclass is indented under subclass 3.  Truss structure involving the arrangement of the several parts, the relative location of the elements, or the structure of the truss as a whole.
  
[List of Patents for class 14 subclass 5]    5Adjustable:
 This subclass is indented under subclass 4.  Truss bridge which includes some adjustable feature (usually, but not always, the camber).

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10,for adjustable bowstring truss bridges.

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405Hydraulic and Earth Engineering,   subclasses 4-7 for dry docks.
  
[List of Patents for class 14 subclass 6]    6Deck:
 This subclass is indented under subclass 4.  Truss bridges in which the road is supported on the upper chord of the truss.

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73,for bridge floors and appurtenances thereto.
  
[List of Patents for class 14 subclass 7]    7Cantilever:
 This subclass is indented under subclass 4.  Bridges of the cantilever type.

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31-69,for drawbridges.

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104Railways,   subclasses 35 -47 for railroad turntables.
  
[List of Patents for class 14 subclass 8]    8Suspension:
 This subclass is indented under subclass 7.  Truss bridges include means of suspension as either a principle or a subordinate feature.

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18-23,for other suspension bridges.
  
[List of Patents for class 14 subclass 9]    9Bowstring:
 This subclass is indented under subclass 4.  Truss bridges having the upper member an arc of a circle and the lower member the chord of said arc.
  
[List of Patents for class 14 subclass 10]    10Adjustable:
 This subclass is indented under subclass 9.  Bowstring truss bridges which include some adjustable feature.
  
[List of Patents for class 14 subclass 11]    11Intermediate catenary:
 This subclass is indented under subclass 4.  Truss bridges having an approximate catenary in addition to the ordinary truss.
  
[List of Patents for class 14 subclass 12]    12Both chords curved:
 This subclass is indented under subclass 4.  Truss bridges having both chords curved, usually oppositely.
  
[List of Patents for class 14 subclass 13]    13Structure:
 This subclass is indented under subclass 3.  Subject matter comprising structure of the members individually (usually, but not always, the upper chord) of trusses.

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74.5,for girders.

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52Static Structures (e.g., Buildings),   subclasses 633 through 697for openwork of more general application, particularly subclasses 639-644 for curvilinear or peaked trusses and subclasses 690-696 for straight trusses; and subclasses 831-857 for elongated rigid members.
  
[List of Patents for class 14 subclass 14]    14Connections:
 This subclass is indented under subclass 3.  Subject matter comprising details of connections between the parts or to details of extensions of such parts.

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5,for adjustable arrangements.
10,for adjustable bowstrings.
15,for end shoes.
75,for piers.

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105Railway Rolling Stock,   subclass 229 for trussed truck bolsters, subclass 399 for passenger car truss frames, and subclass 407 for freight car truss frames.
  
[List of Patents for class 14 subclass 15]    15End shoes:
 This subclass is indented under subclass 3.  Devices connecting the end of the arch member of bowstring trusses to the tension member and immediate connections between compression and tension chord members.

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14,for shoes somewhat similar in structure to end shoes.
73.5,for expansion devices.
  
[List of Patents for class 14 subclass 18]    18SUSPENSION:
 This subclass is indented under the class definition.  Subject matter relating to suspension bridges.

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8and 11, for similar truss structure.

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52Static Structures (e.g., Buildings),   subclasses 223.1 -223.14 for a structure having a prestressing feature.
  
[List of Patents for class 14 subclass 19]    19Compound system:
 This subclass is indented under subclass 18.  Bridges supported by more than two cables arranged in sets which are differently connected to the bridge.
  
[List of Patents for class 14 subclass 20]    20Simple system:
 This subclass is indented under subclass 18.  Bridges supported by a single cable or by a simple system of cables, every cable being similarly placed.
  
[List of Patents for class 14 subclass 21]    21Towers and anchors:
 This subclass is indented under subclass 18.  Devices comprising supports and securing devices for suspension cables.

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7and 8, for cantilever suspension.
26,for arch bridge anchors.

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52Static Structures (e.g., Buildings),   appropriate subclasses for other building structure of more general application, particularly subclasses 146 -152 for vertical structures with diagonal brace or guy, subclasses 155-165 for piercing or expanding land anchors, subclasses 292-299 for footings for vertical structures, and subclasses 223.1-223.14 for a structure having a prestressing feature.
104Railways,   subclass 124 for supports for elevated railways structure.
  
[List of Patents for class 14 subclass 22]    22Cables and cable clamps:
 This subclass is indented under subclass 18.  Structures (such as cables) specially designed to suspend bridges and devices for attachment of other parts to the cables.

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24Buckles, Buttons, Clasps,   etc., subclass 16 for means of connecting ends of cables together and subclass 115 for cord and rope holders.
57Textiles: Spinning, Twisting, and Twining,   subclasses 200 -260 for twisted or spirally wrapped cables.
59Chain, Staple, and Horseshoe Making,   appropriate subclasses for chains.
248Supports,   subclasses 49 -74.5 for pipe and cable supports.
  
[List of Patents for class 14 subclass 23]    23Constructive apparatus:
 This subclass is indented under subclass 18.  Apparatus for use in getting cables into position.

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57Textiles: Spinning, Twisting, and Twining,   particularly subclass 10 for apparatus for spirally wrapping suspension bridge cables.
  
[List of Patents for class 14 subclass 24]    24ARCH:
 This subclass is indented under the class definition.  Bridges of the simple arch type.

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2,for combination truss and arch.
36through 38, for bascule-type bridges.

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52Static Structures (e.g., Buildings),   appropriate subclasses for other static structures of more general application, particularly subclasses 86 -89 for vertically curved arches with a terminal support, subclasses 245-249 for curvilinear barriers, subclasses 639-644 for curvilinear or peaked trusses, subclasses 223.1-223.14 for a structure having a prestressing feature, and subclasses 690-696 for other trusses.
  
[List of Patents for class 14 subclass 25]    25Compound:
 This subclass is indented under subclass 24.  Bridges in which the arch is not a simple structure, but is composed of a lattice girder, a bowstring-truss, or some other compound structure.
  
[List of Patents for class 14 subclass 26]    26Abutments and anchorages:
 This subclass is indented under subclass 24.  Devices relating to the end supports.

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21,for suspension bridge anchors.
75,for bridge piers.
  
[List of Patents for class 14 subclass 27]    27FLOATING:
 This subclass is indented under the class definition.  Bridges of the floating type.

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2.6,for transportable floating bridges.

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114Ships,   subclasses 264 through 266for a floating platform.
  
[List of Patents for class 14 subclass 28]    28Adjustable height:
 This subclass is indented under subclass 27.  Floating bridges containing some structure to produce or to permit variations in the height of the road bed.

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42,for draw lifts.
47,for draw aprons.
71.1through 71.7, for one-end-attached gangways.
  
[List of Patents for class 14 subclass 29]    29Draw:
 This subclass is indented under subclass 27.  Floating bridges of the draw type.
  
[List of Patents for class 14 subclass 30]    30Locking:
 This subclass is indented under subclass 29.  Floating draw bridges, which show some form of device to lock the draw.
  
[List of Patents for class 14 subclass 31]    31DRAW:
 This subclass is indented under the class definition.  Bridges of the draw type.

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29and 30, for floating draw bridges.
  
[List of Patents for class 14 subclass 32]    32Swing:
 This subclass is indented under subclass 31.  Drawbridges of the swing type, limited to structures embodying some feature specifically intended for use in connection with a bridge.

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104Railways,   subclass 35 for railroad turntables and subclass 48 for railroad transfer tables.
  
[List of Patents for class 14 subclass 33]    33Hand or motor operated:
 This subclass is indented under subclass 32.  Bridges having operating means.
  
[List of Patents for class 14 subclass 34]    34Boat operated:
 This subclass is indented under subclass 32.  Bridges intended to be swung by an approaching boat and usually equipped with an automatic return.

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44,for boat-operated horizontally sliding draw bridges.
  
[List of Patents for class 14 subclass 35]    35End supports and locking devices:
 This subclass is indented under subclass 32.  Devices for connecting the ends of the stationary supports for the purpose of support or locking, or both.

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405Hydraulic and Earth Engineering,   subclass 4 for similar devices on dry docks.
  
[List of Patents for class 14 subclass 36]    36Fixed pivot:
 This subclass is indented under subclass 31.  Drawbridges of the bascule type revolving on a fixed pivot.

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47,for aprons.
71.1through 71.7, for one-end-attached gangways.

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105Railway Rolling Stock,   subclasses 261.1 -279 for car attached rerailers, subclasses 262 and 263 for car replacers, and subclass 276 for overhead hose bridges.
119Animal Husbandry,   subclasses 843-849 for animal gangways.
  
[List of Patents for class 14 subclass 37]    37Hinged sections:
 This subclass is indented under subclass 36.  Bascule bridges in which each vertically swinging part is composed of sections hinged together.
  
[List of Patents for class 14 subclass 38]    38Rack and pinion:
 This subclass is indented under subclass 36.  Bascule bridges operated by a rack and pinion, the rack being on the movable span and the other on a stationary part of the bridge.

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40,for similar structure on nonpivoted bascule bridges.
  
[List of Patents for class 14 subclass 39]    39Nonpivoted:
 This subclass is indented under subclass 31.  Bascule bridges with no fixed pivot operated by means acting directly on the movable span.

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47,for aprons.
71.1through 71.7, for one-end-attached gangways.

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105Railway Rolling Stock,   subclasses 261.1 -279, 262, 263, and 276. (See this class (14), subclass 36).
119Animal Husbandry,   subclasses 843-849 for animal gangways.
414Material or Article Handling,   subclasses 364 -366 and 742 for similar structure in material handling devices.
  
[List of Patents for class 14 subclass 40]    40Rack and pinion:
 This subclass is indented under subclass 39.  Bridges operated by a rack and pinion, the rack or the pinion being on the movable span and the other on a stationary part of the bridge.

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38,for similar structure on fixed pivot bascule bridges.
  
[List of Patents for class 14 subclass 41]    41Locking devices:
 This subclass is indented under subclass 31.  Devices for positively locking the movable parts of bascule bridges against vertical or lateral movement.
  
[List of Patents for class 14 subclass 42]    42Lift:
 This subclass is indented under subclass 31.  Drawbridges moving vertically (either up or down from normal position) with usually no horizontal motion.

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52,58-62, and 66, for vertically sliding gates.
71.1through 71.7, for one-end-attached gangways.

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405Hydraulic and Earth Engineering,   subclass 3 for lift-type drydocks.
  
[List of Patents for class 14 subclass 43]    43Horizontally sliding:
 This subclass is indented under subclass 31.  Drawbridges which open by a horizontal longitudinal movement.

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69.5through 72.5, appropriate subclasses for unattached gangways.

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104Railways,   subclass 124 for similar structure on elevated railways.
  
[List of Patents for class 14 subclass 44]    44Boat operated:
 This subclass is indented under subclass 43.  Drawbridges which are operated by an approaching boat.

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34,for boat-operated swinging drawbridges.
  
[List of Patents for class 14 subclass 45]    45Lazy tongs:
 This subclass is indented under subclass 31.  Drawbridges operated by one or more lazy-tongs.

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74Machine Element or Mechanism,   subclass 521 for lazy tongs.
160Flexible or Portable Closure, Partition, or Panel,   subclasses 136 -165 for lazy tongs operated and other forms of plural strip, slat or panel devices in which the elements intersect to form parallelograms pivoted at their points of intersection.
  
[List of Patents for class 14 subclass 46]    46Locking devices:
 This subclass is indented under subclass 31.  Devices for positively locking drawbridges against movement.
(1) Note. Search this class, for all other subclasses under the main subtitles of Draw and Floating entitled "locking devices."
  
[List of Patents for class 14 subclass 47]    47Aprons:
 This subclass is indented under subclass 31.  Devices usually constituting part of the floor or roadway and connecting the draw to the fixed span (being hinged to one or the other), which are moved out of the way either prior to or during the movement of the draw.

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28,for similar structure on floating bridges.
71.1through 71.7, for one-end-attached gangways. The subclasses under Draw, Bascule, for the use of similar structure.
  
[List of Patents for class 14 subclass 48]    48Buffers:
 This subclass is indented under subclass 31.  Structures, actuated by drawbridges, which when the draw is open project above the roadway to receive the impact of a moving car or other object and designed to resist considerable force.

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104Railways,   subclass 254 for bumpers for railway cars.
186Merchandising,   subclasses 24 and 25 for buffers used in store service.
  
[List of Patents for class 14 subclass 49]    49Signals:
 This subclass is indented under subclass 31.  Devices relating to signal apparatus used in connection with drawbridges and usually operated simultaneously with the gates.

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246Railway Switches and Signals,   subclass 118 for drawbridge-protection railway signals.
  
[List of Patents for class 14 subclass 50]    50Gates:
 This subclass is indented under subclass 31.  Drawbridge having gates whose operation involve some feature specific to bridges.

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37,for hinged-section bascule bridges.

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49Movable or Removable Closures,   appropriate subclasses for closures of the type provided for, and see the search notes in section IV of Class 49, for the loci of closures in other classes.
160Flexible or Portable Closure, Partition, or Panel,   appropriate subclasses for (1) gates in the form of panel units in which a flexible fabric or other flexible sheet material forms the panel portion, (2) panel units formed of plural strips, slats or panels interconnected for relative motion (excluding those connected only by a common operator or mounted only on a common support or in a common frame), where the relation to a bridge or the features of bridge structure are not claimed.
405Hydraulic and Earth Engineering,   subclasses 87-106 for water control gates.
  
     Hand or motor operated:
 This subclass is indented under subclass 50.  Drawbridge gates operated wholly or in part by hand or motor power.
  
[List of Patents for class 14 subclass 51]    51Horizontally swinging:
 This subclass is indented under subclass 50.  Hand or motor-operated drawbridge gates which are horizontally swinging.
  
[List of Patents for class 14 subclass 52]    52Vertically sliding:
 This subclass is indented under subclass 50.  Hand or motor-operated drawbridge gates which are vertically sliding.

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405Hydraulic and Earth Engineering,   subclass 86 for lifting canal locks and subclass 3 for lifting dry docks.
  
[List of Patents for class 14 subclass 53]    53Vertically swinging:
 This subclass is indented under subclass 50.  Hand or motor-operated drawbridge gates which are vertically swinging.
  
     Bridge operated:
 This subclass is indented under subclass 50.  Drawbridge gates operated either by being contacted by the bridge, or by gate-operating mechanism under the control of the bridge.
  
     Displacement:
 This subclass is indented under subclass 50.  Bridge-operated gates wherein the bridge displaces the member of the operative member which contacts with the movable span.
  
[List of Patents for class 14 subclass 54]    54Horizontally sliding:
 This subclass is indented under subclass 50.  Displacement-type bridge-operated gates which are horizontally sliding.
  
[List of Patents for class 14 subclass 55]    55Locking:
 This subclass is indented under subclass 54.  Devices, said gate having an attachment for locking it in one position.
  
[List of Patents for class 14 subclass 56]    56Horizontally swinging:
 This subclass is indented under subclass 50.  Displacement-type bridge-operated gates which are horizontally swinging.
  
[List of Patents for class 14 subclass 57]    57Locking:
 This subclass is indented under subclass 56.  Devices, said gate having an attachment for locking it in one position.
  
[List of Patents for class 14 subclass 58]    58Vertically sliding:
 This subclass is indented under subclass 50.  Displacement-type bridge-operated gates which are vertically sliding.
  
[List of Patents for class 14 subclass 59]    59Locking:
 This subclass is indented under subclass 58.  Devices, said gate having an attachment for locking it in one position.
  
[List of Patents for class 14 subclass 60]    60Vertically swinging:
 This subclass is indented under subclass 50.  Displacement-type bridge-operated gates which are vertically sliding.
  
[List of Patents for class 14 subclass 61]    61Locking:
 This subclass is indented under subclass 60.  Devices, said gate having an attachment for locking it in one position.
  
     Shaft rotation:
 This subclass is indented under subclass 50.  Bridge-operated gates under subclass 50 wherein the bridge first rotates a shaft in the operating mechanism.
  
[List of Patents for class 14 subclass 62]    62Horizontally sliding:
 This subclass is indented under subclass 50.  Shaft rotation bridge-operated gates which are horizontally sliding.
  
[List of Patents for class 14 subclass 63]    63Locking:
 This subclass is indented under subclass 62.  Devices, said gate having an attachment for locking it in one position.
  
[List of Patents for class 14 subclass 64]    64Horizontally swinging:
 This subclass is indented under subclass 50.  Shaft rotation bridge-operated gates which are horizontally swinging.
  
[List of Patents for class 14 subclass 65]    65Locking:
 This subclass is indented under subclass 64.  Devices, said gate having an attachment for locking it in one position.
  
[List of Patents for class 14 subclass 66]    66Vertically sliding:
 This subclass is indented under subclass 50.  Shaft rotation bridge-operated gates which are vertically sliding.
  
[List of Patents for class 14 subclass 67]    67Locking:
 This subclass is indented under subclass 66.  Devices, said gate having an attachment for locking it in one position.
  
[List of Patents for class 14 subclass 68]    68Vertically swinging:
 This subclass is indented under subclass 50.  Shaft rotation bridge-operated gates which are vertically swinging.
  
[List of Patents for class 14 subclass 69]    69Locking:
 This subclass is indented under subclass 68.  Devices, said gate having an attachment for locking it in one position.
  
[List of Patents for class 14 subclass 69.5]    69.5GANGWAY, RAMP, OR DOCK LEVELER:
 This subclass is indented under the class definition.  Subject matter comprising a floored, narrow structure especially adapted to serve as a bridge for supporting persons or material or conveying them between ordinarily disassociated bases.
(1) Note. Included in this subclass and the subclasses thereunder are loading docks and related structure.

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52Static Structures (e.g., Buildings),   subclasses 2.11 -2.26 and 173.2 for dock seals.
114Ships,   subclass 362 for a structure generally limited to use for assisting in the boarding or disembarking of a vessel by personnel.
182Fire Escape, Ladder, or Scaffold,   subclasses 222 and 223 for a platform.
193Conveyors, Chutes, Skids, Guides, and Ways,   subclass 38 for a skidway.
254Implements or Apparatus for Applying Pushing or Pulling Force,   subclasses 88 and 89-92 for a vehicle ramp and means for lifting at least a portion of the ramp while it supports the vehicle.
404Road Structure, Process, or Apparatus,   subclasses 34 and 35 for a portable ramp structure or arrangement.
414Material or Article Handling,   subclasses 137.1 -143.2 and 537 for a bridge or gangway with means to effect movement of cargo to or from a marine vessel and for the combination of a bridge or gangway with a ship and with additional material handling structure excluded from Class 14 (or from Class 114, Ships).
  
[List of Patents for class 14 subclass 70]    70Endless conveyor:
 This subclass is indented under subclass 69.5.  Bridging structure, which includes an endless conveyor as the whole or a part of the floor.

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56Harvesters,   subclasses 76 -78 for cornstack handlers, subclasses 181-188 for harvester conveyors, and subclasses 345-359 for rakers and loaders.
119Animal Husbandry,   subclasses 843-849 for animal gangways.
182Fire Escape, Ladder, or Scaffold,   subclasses 42 -44 for similar structure in a fire escape.
193Conveyors, Chutes, Skids, Guides, and Ways,   appropriate subclasses for a nonpower-driven endless belt conveyor.
198Conveyors: Power-Driven,   subclasses 321 -338 for a people carrying conveyor of the endless belt type, subclasses 793-803.15 for a load supporting platform moved about an endless path, and subclasses 804-853 for an endless belt conveyor.
460Crop Threshing or Separating,   subclass 86 for straw carriers.
  
[List of Patents for class 14 subclass 71.1]    71.1Attached:
 This subclass is indented under subclass 69.5.  Bridging structure in which one end thereof is secured to one of the ordinarily disassociated bases.
(1) Note. Securement of the gangway to the base in this subclass is intended to include a loose securement; e.g., the provision to allow the gangway to pivot vertically or horizontally with respect to the base to which it is attached is included herein as is the provision to allow the gangway to slide horizontally with respect to the base.
(2) Note. Dock levelers generally are classified in this subclass and the indented subclasses.

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42and 47, subclasses indented under Draw and Bascule for similar structure associated with the special types.

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104Railways,   subclass 31 for a station platform having shiftable portions to facilitate passenger movements or handling of freight.
105Railway Rolling Stock,   subclasses 436 and 458 for similar structure adapted to be used with a railway vehicle.
114Ships,   subclass 362 for boarding aids, including a ladder or gangway, generally, limited to use for assisting in the boarding of vessel by personnel.
119Animal Husbandry,   subclasses 843-849 for a gangway of particular utility to the transporting of livestock.
296Land Vehicles: Bodies and Tops,   subclass 61 for ramps attached at one end, usually to a vehicle.
410Freight Accommodation on Freight Carrier,   subclass 6 for ramps attached at one end, usually to a rail car.
414Material or Article Handling,   subclasses 137.1 -143.2 for a bridge or gangway with means to effect movement or cargo to or from a marine vessel and for the combination of a bridge or gangway with a ship and with additional material handling structure excluded from Class 14 (or from Class 114, Ships).
  
[List of Patents for class 14 subclass 71.3]    71.3With lift means:
 This subclass is indented under subclass 71.1.  Bridging structure including means to force at least a portion of the person or material supporting structure in a vertical direction for repositioning of the gangway to properly relate to the disassociated bases.

SEE OR SEARCH CLASS:

74Machine Element or Mechanism,   appropriate subclasses for a mechanism used in moving a ramp.
248Supports,   subclasses 157 -423 for a ramp support.
414Material or Article Handling,   subclasses 228 -230, 258, 385, 401, and 584 for handling apparatus including a movable ramp.
  
[List of Patents for class 14 subclass 71.5]    71.5Attached to fixed structure at first end and with cover and provision to fit vehicle at second end:
 This subclass is indented under subclass 71.3.  Bridging structure, one end of which is attached to a building or other fixed base wherein the gangway includes a protective shroud adapted to cover and isolate any person or material supported thereon from the atmosphere and including provision to cause the end of the gangway remote from the fixed base to cooperatively interfit with a mobile base.

SEE OR SEARCH CLASS:

187Elevator, Industrial Lift Truck, or Stationary Lift for Vehicle,   subclasses 247 , 248, 267, and 268 for control means for an elevator.
454Ventilation,   subclass 370 for ventilating an airport ramp.
  
[List of Patents for class 14 subclass 71.7]    71.7Hydraulic powered:
 This subclass is indented under subclass 71.3.  Bridging structure wherein the repositioning means includes a fluid actuated motor as a prime mover.

SEE OR SEARCH CLASS:

60Power Plants,   appropriate subclasses for a hydraulic system.
91Motors: Expansible Chamber Type,   appropriate subclasses for structure of a hydraulic or pneumatic component.
137Fluid Handling,   appropriate subclasses for various components of a hydraulic system (e.g., check valves).
251Valves and Valve Actuation,   appropriate subclasses for specific valve structure.
  
[List of Patents for class 14 subclass 72.5]    72.5Wheeled:
 This subclass is indented under subclass 69.5.  Bridging structure having attached thereto wheels that are adapted to be utilized to transport the gangway to the location of its use.
  
[List of Patents for class 14 subclass 73]    73DECK:
 This subclass is indented under the class definition.  Floors and appurtenances thereto which are specific to bridge structures.

SEE OR SEARCH THIS CLASS, SUBCLASS:

6,for a deck on the upper chord of a truss.

SEE OR SEARCH CLASS:

52Static Structures (e.g., Buildings),   appropriate subclasses for ceiling, flooring or roof constructions, particularly subclasses 174 -176 for buildings with traffic feature; subclasses 223.1-223.14 for a structure having a prestressing feature; subclasses 319-341 for cast-in situ ribbed concrete constructions with attached flooring or ceiling; subclasses 578-592.6 for modules, panels or slabs with edgewise connecting features; and subclasses 660-676 for gratings.
404Road Structure, Process, or Apparatus,   subclasses 34 , 43-45, 70, 71, and 134-136 for deck structure, per se.
  
[List of Patents for class 14 subclass 73.1]    73.1Joint:
 This subclass is indented under subclass 73.  Subject matter including means between adjacent bridge deck portions which allows slight relative movement between the portions.
(1) Note. The "slight movement" referred to in this subclass includes shifting incidental to temperature change of the bridge parts.
(2) Note. The "deck" of this subclass includes that portion of the bridge adapted to be engaged by traffic crossing thereon.

SEE OR SEARCH CLASS:

52Static Structures (e.g., Buildings),   subclass 396.01 for an expansion joint.
404Road Structure, Process, or Apparatus,   subclasses 47 -69 for an expansion joint in a road.
405Hydraulic and Earth Engineering,   subclasses 135 and 153 for an expansion joint in a tunnel.
  
[List of Patents for class 14 subclass 73.5]    73.5EXPANSION DEVICE (E.G., BEARING PAD):
 This subclass is indented under the class definition.  Subject matter including means between a bridge component and a support base (e.g., the earth, a column, pier, wall, or abutment) which allows slight movement of the bridge with respect to the base.
(1) Note. The "slight movement" referred to in this subclass includes shifting incidental to temperature change of the bridge parts.

SEE OR SEARCH THIS CLASS, SUBCLASS:

21,for a suspension bridge tower or anchor.
26,for an arch bridge abutment or anchorage.

SEE OR SEARCH CLASS:

52Static Structures (e.g., Buildings),   subclasses 167.1 -167.9 for an expansion device (e.g., bearing pad) allowing compensation, and absorbing motion in, e.g., a building.
  
[List of Patents for class 14 subclass 74]    74COVERING:
 This subclass is indented under the class definition.  Devices for covering and protecting separately the members of a bridge. Does not include structures for covering a bridge as a whole.

SEE OR SEARCH THIS CLASS, SUBCLASS:

76,for pier fenders.
  
[List of Patents for class 14 subclass 74.5]    74.5GIRDER:
 This subclass is indented under the class definition.  Subject matter comprising a distinct generally horizontal structural member in the superstructure for supporting a traffic bearing surface.
(1) Note. Structure in this subclass is generally either one usually solid piece (e.g., I, W, S, polygonal, ellipsoidal beam or AASHTO type I-VI beam) or fabricated from solid pieces (e.g., box beam), both without distinguishable support elements for tension or compression.
(2) Note. Included in this subclass are prestressed beams.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73,for a bridge deck having the reinforcement integral with the traffic bearing surface.

SEE OR SEARCH CLASS:

29Metal Working,   subclass 897.35 for assembly and details of girders.
52Static Structures (e.g., Buildings),   subclasses 223.1 through 223.14for prestressing features and subclasses 836-841 for I-beams.
  
[List of Patents for class 14 subclass 75]    75PIER:
 This subclass is indented under the class definition.  Structure relating to the intermediate supports for bridge spans.

SEE OR SEARCH CLASS:

52Static Structures (e.g., Buildings),   subclasses 274 and 292-299 for building foundation constructions and subclasses 848 and 849 for end-to-end connected sections.
405Hydraulic and Earth Engineering,   subclasses 222 , 223, and 224-228 for masonry and concrete piers and methods for constructing the same in a marine environment and subclasses 231-257 for piers and construction methods therefor not specifically for use in marine environments.
  
[List of Patents for class 14 subclass 76]    76Fender:
 This subclass is indented under subclass 75.  Structures designed to protect piers from damage by boats, ice, driftwood, etc.

SEE OR SEARCH THIS CLASS, SUBCLASS:

74,for other protectors of bridge parts.

SEE OR SEARCH CLASS:

114Ships,   subclasses 219 and 220 for ship fenders.
405Hydraulic and Earth Engineering,   subclasses 212 -215 for fenders for piers in general, as well as fenders for other marine structures of the class type.
  
[List of Patents for class 14 subclass 77.1]    77.1BRIDGE CONSTRUCTION METHOD:
 This subclass is indented under the class definition.  Technique for constructing a bridge superstructure.
(1) Note. See Search Notes under the Class Definition for bridge construction equipment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

21,for a suspension bridge tower and anchor.
26,for an arch bridge abutment and anchorage.
77.3,for constructing piers.

SEE OR SEARCH CLASS:

52Static Structures (e.g., Buildings),   subclasses 745.19 and 745.2 for precast bridge construction.
264Plastic and Nonmetallic Article Shaping or Treating: Processes,   subclasses 31 -35 for in situ construction of a bridge (e.g., few or no precast members).
405Hydraulic and Earth Engineering,   subclasses 284 -287 for a method of building a retaining wall-type abutment.
425Plastic Article or Earthenware Shaping or Treating: Apparatus,   subclass 64 for in situ construction devices.
  
[List of Patents for class 14 subclass 77.3]    77.3Pier:
 Method of constructing a generally vertical structural support for a bridge.
(1) Note. See Search Notes under the Class Definition for pier construction equipment.

SEE OR SEARCH CLASS:

405Hydraulic and Earth Engineering,   subclasses 232 -249 for equipment used in constructing a pier.
  
[List of Patents for class 14 subclass 78]    78MISCELLANEOUS:
 This subclass is indented under the class definition.  Bridge structure involving features not otherwise classifiable above.
  

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