CLASS 138, PIPES AND TUBULAR CONDUITS |
26 | WITH PRESSURE COMPENSATORS: |
This subclass is indented under the class definition. Devices in the pipe line, attached thereto, or adapted to
be attached thereto, for allowing expansion of the conducted fluid
upon change in temperature, for receiving and delivering energy
from and to the conducted fluid to maintain a more nearly constant
pressure of the fluid and for dampening pulsations in pressure caused
by a quick-shutoff of flow or by the nonuniform action of a pump.
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27 | . Freeze protecting: |
This subclass is indented under subclass 26. Devices intended to prevent the bursting of the pipe when
the fluid therein freezes by providing an air pocket or other chamber
into which the fluid can flow when it expands.
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28 | .. Expansible or compressible tube element: |
This subclass is indented under subclass 27. Devices in which the tube itself or a part thereof is expansible or an element in the tube is compressible to allow for the expansion of the fluid when it freezes. | |
30 | . Variable capacity chambers: |
This subclass is indented under subclass 26. Devices in the form of a chamber whose capacity is variable
usually by means of a flexible diaphragm or sliding plunger.
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31 | .. Piston or plunger type: |
This subclass is indented under subclass 30. Devices in which the chamber is of variable capacity by reason of a slidable piston or plunger. | |
32 | THAWING AND FREEZE PROTECTION: |
This subclass is indented under the class definition. Devices for thawing the frozen fluid in pipes or pipes having
means for preventing the fluid from freezing or for preventing the
bursting of the pipe when the fluid freezes.
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33 | . Electric: |
This subclass is indented under subclass 32. Devices which are in the form of an electric heater.
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34 | . Anti-freeze substance: |
This subclass is indented under subclass 32. Devices which have means for putting an antifreeze substance
into the fluid in the pipe.
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35 | . Portable thawing apparatus: |
This subclass is indented under subclass 32. Thawing apparatus which is portable and not elsewhere classifiable as a stove or heater. | |
36 | WITH WEAR INDICATOR: |
This subclass is indented under the class definition. Pipes having means whereby they will be caused to leak when worn so as to need replacing and other wear indicating means. | |
37 | WITH FLOW REGULATORS AND/OR BAFFLES: |
This subclass is indented under the class definition. Pipes or pipe fittings having baffles or other means for
changing the direction or rate of flow of fluid in the pipe or for
governing the degree of turbulence of the flowing fluid.
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38 | . Heat transfer: |
This subclass is indented under subclass 37. Pipes in which the baffle or other means is designed to
facilitate a transfer of heat between fluids inside and outside
of the pipe.
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39 | . Flow facilitating: |
This subclass is indented under subclass 37. Pipes in which the baffles or other means are designed to facilitate the flow of fluid in the pipe. | |
40 | . Restrictors: |
This subclass is indented under subclass 37. Pipes in which the means restricts the flow in the pipe,
but does not cut off entirely.
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41 | .. With screen: |
This subclass is indented under subclass 40. Pipes which have a screen in the line of flow in addition to the restrictor. | |
42 | .. Tortuous path: |
This subclass is indented under subclass 40. Devices in which the path of flow of the fluid is tortuous. | |
43 | ... Variable restriction: |
This subclass is indented under subclass 42. Devices wherein the device is adjustable to vary the restriction. | |
44 | .. Central path: |
This subclass is indented under subclass 40. Devices in which the path of flow of the fluid is centrally of the tube. | |
45 | ... Variable restriction: |
This subclass is indented under subclass 44. Devices wherein the restrictor is adjustable to vary the
restriction.
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46 | .. Variable restriction: |
This subclass is indented under subclass 40. Devices in which the restrictor is adjustable to vary the restriction. | |
89 | WITH CLOSURES AND PLUGS: |
This subclass is indented under the class definition. Subject matter relating to pipes or pipe fittings having
closures or plugs, or closures and plugs limited by structure to
use with pipes.
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This subclass has no definition. | |
89.1 | .. Air and dust cap: |
This subclass is indented under the unnumbered
subclass Inflation stem type. Closures for pipes of the inflation stem type comprising an
air cap which closes the end of the pipe and a dust cap which shrouds
the air cap and a portion of the pipe.
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89.2 | ... Combined: |
This subclass is indented under subclass 89.1. Closures in which the air cap and dust cap are combined in one structure. | |
89.3 | .. Air cap: |
This subclass is indented under the unnumbered
subclass Inflation stem type. Closures for pipes of the inflation stem type comprising air
caps.
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89.4 | .. Dust cap: |
This subclass is indented under the unnumbered subclass Inflation stem type. Closures for pipes of the inflation stem type comprising dust caps. | |
90 | . Test plugs: |
This subclass is indented under subclass 89. Plugs for pipes having provisions whereby a fluid may be introduced into the pipe through the plug or for the attachment of a gauge for the purpose of testing the pipe for leaks. | |
91 | . Double end: |
This subclass is indented under subclass 89. Plugs for pipes wherein both ends of the pipe are plugged by connected plugs. | |
92 | . Lateral opening: |
This subclass is indented under subclass 89. Closures and plugs designed to close an opening in the side of a pipe. | |
93 | . Inflatable: |
This subclass is indented under subclass 89. Plugs for pipes having an inflatable member to seal against inside of the pipe opening. | |
94 | . Laterally insertable: |
This subclass is indented under subclass 89. Closures and plugs for the inside opening of a pipe which are insertable through a lateral opening in the pipe. | |
94.3 | .. Line blinds: |
This subclass is indented under subclass 94. Closures of the type generally known as "line blinds" which
are of platelike form.
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94.5 | ... Pivoted: |
This subclass is indented under subclass 94.3. Closures in which the plates are pivoted.
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95 | . Return bend type: |
This subclass is indented under subclass 89. Closures and plugs specially designed to be used with a
return bend fitting.
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96R | END PROTECTORS: |
This subclass is indented under the class definition. Devices for protecting the ends of pipes, usually threaded,
from damage when not in use while being shipped or handled.
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96T | . Threaded |
This subclass has no definition. | |
97 | REPAIRING: |
This subclass is indented under the class definition. Processes and apparatus for repairing leaks in pipes and
hose and not otherwise classifiable.
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98 | . Patches: |
This subclass is indented under subclass 97. Subject matter relating to patches for leaky pipes or hose.
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99 | .. External: |
This subclass is indented under subclass 98. Patches which are applied externally of the pipe and usually have a clamp band encircling the pipe. | |
100 | BREAKJOINT: |
This subclass is indented under the class definition. Subject matter wherein joints transverse to the length of
the pipe are staggered or in break-joint relation to other joints
in the pipe wall make-up which are also transverse to the length
of said pipe.
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101 | . Distinct layers: |
This subclass is indented under subclass 100. Device wherein the pipe wall comprises more than one layer, one layer having transverse joints that break joint relative to transverse joints of another layer. | |
102 | . With base: |
This subclass is indented under subclass 100. Device wherein the pipe comprises base sections, joined to adjacent base sections, the joints of said sections being staggered in relation to joints of other sections which make up the pipe wall or parts thereof. | |
103 | COMBINED: |
This subclass is indented under the class definition. Subject matter comprising structure in addition to or combined
with the wall structure of the pipe or tube.
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104 | . With indicating means: |
This subclass is indented under subclass 103. Device including indicating means.
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105 | . With trench: |
This subclass is indented under subclass 103. Device including a trench in which the pipe lies or is received. | |
106 | . With external support structure: |
This subclass is indented under subclass 103. Device including means externally of the pipe for supporting
same.
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107 | .. Suspended: |
This subclass is indented under subclass 106. Device wherein the pipe is suspended by the supporting means.
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108 | . With means to support disparate element therein: |
This subclass is indented under subclass 103. Device including means in the pipe to support a disparate element therein; which, per se, is subject matter for other classification. | |
109 | . With end structure: |
This subclass is indented under subclass 103. Device having structure at an end portion thereof which
is not elsewhere classifiable.
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110 | . With hose protector: |
This subclass is indented under subclass 103. Device including structure for protecting a pipe from kinking,
being bent too abruptly, or from wear due to its coming in contact
with other objects.
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111 | PLURAL DUCT: |
This subclass is indented under the class definition. Device having a plurality of unconnected passageways extending completely through the pipe. | |
112 | . With spacer and encircling element: |
This subclass is indented under subclass 111. Device supported by spacer elements and having a duct encircling member which is not fully coextensive with said duct. | |
113 | . Surrounding radially spaced duct with axially spaced supports for internal duct: |
This subclass is indented under subclass 111. Device wherein an inner duct is surrounded by a coextensive
duct and radially spaced therefrom by a plurality of axially spaced
support members.
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114 | . Coaxial: |
This subclass is indented under subclass 111. Device wherein one duct lies coaxially within another duct. | |
115 | . Longitudinally extending common wall: |
This subclass is indented under subclass 111. Device having a longitudinally extending element therein which constitutes a common wall for more than one passageway. | |
116 | .. Distinct: |
This subclass is indented under subclass 115. Device wherein the element is separable from the duct. | |
117 | .. Complementary sections: |
This subclass is indented under subclass 115. Device comprising complementary sections, at least one of the sections having the common wall integral therewith. | |
118 | FLEXIBLE: |
This subclass is indented under the class definition. Device wherein the pipe wall is readily moved transversely of its longitudinal axis. | |
118.1 | . Casing: |
This subclass is indented under subclass 118. Device in the form of a casing.
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119 | . With means for facilitating collapse: |
This subclass is indented under subclass 118. Device having a crease or other means in the pipe wall for facilitating collapsing of the pipe. | |
120 | . Joined sections: |
This subclass is indented under subclass 118. Device wherein the tube wall is made up of jointed, short
and tubular, relatively movable sections.
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121 | . Corrugated: |
This subclass is indented under subclass 118. Device having folds or corrugations in the wall thereof.
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122 | .. Spirally: |
This subclass is indented under subclass 121. Device wherein the folds are found in the shape of a spiral or helix. | |
123 | . Braided, interlaced, knitted or woven: |
This subclass is indented under subclass 118. Device comprising braided, interlaced, knitted or woven
material.
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124 | .. Distinct layers: |
This subclass is indented under subclass 123. Device wherein there is more than one layer in the pipe
wall make-up.
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125 | ... Plastic: |
This subclass is indented under subclass 124. Device wherein at least one of said layers includes a plastic material. | |
126 | .... Rubber: |
This subclass is indented under subclass 125. Device wherein said material is rubber. | |
127 | ..... With metal: |
This subclass is indented under subclass 126. Device including metal. | |
128 | . Longitudinally seamed: |
This subclass is indented under subclass 118. Device having a longitudinally extending seam therein.
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129 | . Spirally wound material: |
This subclass is indented under subclass 118. Device wherein at least one spirally wound layer constitutes
the wall structure or a part thereof.
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130 | .. Oppositely wound: |
This subclass is indented under subclass 129. Device wherein there are plural layers of material spirally wound in opposite directions. | |
131 | .. Metal core: |
This subclass is indented under subclass 129. Device wherein the spirally wound material constitutes a metallic core or innermost part of the pipe wall. | |
132 | .. Embedded: |
This subclass is indented under subclass 129. Device which is embedded in the pipe wall or enclosed between two or more layers of the pipe. | |
133 | ... Metal: |
This subclass is indented under subclass 132. Device comprising metal. | |
134 | .. Metal: |
This subclass is indented under subclass 129. Device comprising metal.
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135 | ... With interlocked or clamped edge: |
This subclass is indented under subclass 134. Device wherein a spiral edge is interlocked with an adjacent spiral edge. | |
136 | .... Packed or sealed: |
This subclass is indented under subclass 135. Device having a packing or sealing material between the interlocked or clamped edges. | |
137 | . Distinct layers: |
This subclass is indented under subclass 118. Device wherein the pipe wall is made up of more than one
layer.
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138 | .. With intermediate metal element: |
This subclass is indented under subclass 137. Device having a metallic element embedded in one of the layers or positioned between at least two layers. | |
139 | .. Metal liner: |
This subclass is indented under subclass 137. Device wherein at least one of the distinct layers is a
metal liner.
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140 | DISTINCT LAYERS: |
This subclass is indented under the class definition. Device having more than one layer in the pipe wall make-up.
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141 | . Bonded to each other: |
This subclass is indented under subclass 140. Device wherein at least two contacting layers are bonded to each other, by an intermediate layer. | |
142 | .. Brazed, soldered or welded: |
This subclass is indented under subclass 141. Device wherein the bonding means is a braze, solder or weld. | |
143 | .. Metal: |
This subclass is indented under subclass 141. Device wherein at least one of the contacting layers is metal. | |
144 | .. Spirally wound layer: |
This subclass is indented under subclass 141. Device wherein at least one layer is spirally wound.
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145 | . Coated: |
This subclass is indented under subclass 140. Device wherein the pipe has one or more layers of material
deposited thereon.
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146 | .. Diverse coating material: |
This subclass is indented under subclass 145. Device wherein at least one coated layer is of a material
different from the material of another coated layer.
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147 | . With mechanical means to hold layers in contact: |
This subclass is indented under subclass 140. Device wherein mechanical means, such as clips, clamps,
bolts, rivets, etc., are used to hold one layer within or on another
layer.
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148 | . Spaced: |
This subclass is indented under subclass 140. Device wherein at least one layer is spaced from an adjacent
layer to form an enclosing chamber therearound.
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149 | . With intermediate insulation layer: |
This subclass is indented under subclass 140. Device wherein there is an intermediate layer of insulation material. | |
150 | . With spiral seam: |
This subclass is indented under subclass 140. Device wherein at least one layer has a spiral seam therein.
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151 | . With longitudinal seam: |
This subclass is indented under subclass 140. Device wherein at least one layer has a longitudinally extending
seam therein.
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152 | .. Material of one layer passing through seam: |
This subclass is indented under subclass 151. Device wherein the edges of at least one layer are spaced from each other and another layer has a part thereof extending into said space. | |
153 | . Reinforced: |
This subclass is indented under subclass 140. Device wherein one of said layers is reinforced. | |
154 | SPIRALLY SEAMED: |
This subclass is indented under the class definition. Device having a spirally extending seam.
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155 | JOINED SECTIONS: |
This subclass is indented under the class definition. Device wherein the pipe wall is made up of short tubular
sections which are rigidly joined to each other.
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156 | LONGITUDINALLY SEAMED: |
This subclass is indented under the class definition. Device having a longitudinally extending seam.
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157 | . Sectional: |
This subclass is indented under subclass 156. Device having more than one longitudinal seam so as to comprise
longitudinal sections which are secured one to another.
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158 | .. With separate mechanical securing means: |
This subclass is indented under subclass 157. Device wherein said longitudinal sections have distinct mechanical means, cooperating with the pipe wall, for securing said sections together. | |
159 | ... Bolt, nail, rivet or screw: |
This subclass is indented under subclass 158. Device having bolts, nails, rivets or screws securing them
together.
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160 | .... Radially extending: |
This subclass is indented under subclass 159. Device extending radially through the pipe wall. | |
161 | ... Externally encircling: |
This subclass is indented under subclass 158. Device comprising an external element encircling or partially encircling the pipe. | |
162 | .. Tongue and slot: |
This subclass is indented under subclass 157. Device wherein there is a tongue in one section which passes through a slot in an adjacent section to secure said sections together. | |
163 | .. Bent over lip or flange: |
This subclass is indented under subclass 157. Device wherein at least one of said longitudinal sections has a bent over lip or flange. | |
164 | . With packing: |
This subclass is indented under subclass 156. Device including packing to prevent leakage.
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165 | . With wedge: |
This subclass is indented under subclass 156. Device having a wedge locking together the adjacent edges
thereof.
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166 | . With tongue in slot: |
This subclass is indented under subclass 156. Device wherein there is a tongue or projection received
in a slot to lock together adjacent edges of the seamed pipe.
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167 | . With diverse locking means: |
This subclass is indented under subclass 156. Device having different structural means holding together adjacent longitudinal edges of the seamed pipe. | |
168 | . With interlocking hooks: |
This subclass is indented under subclass 156. Device wherein the adjacent longitudinal edges of the pipe have hook-like formations which interlock to form a seam. | |
169 | . Diversity of seam: |
This subclass is indented under subclass 156. Device wherein the seam forming structure changes its character somewhere along the length of the seam. | |
170 | . Permanent type seam: |
This subclass is indented under subclass 156. Device wherein the seam is permanently formed or locked. | |
171 | .. Brazed, soldered or welded: |
This subclass is indented under subclass 170. Device wherein the forming or locking means is a braze,
solder or weld.
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172 | REINFORCED: |
This subclass is indented under the class definition. Device wherein the wall structure of the pipe is reinforced
either by the shape of the wall or by at least one element applied
to said wall.
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173 | . Corrugated: |
This subclass is indented under subclass 172. Device wherein the reinforcement is in the form of corrugations.
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174 | . With embedded element: |
This subclass is indented under subclass 172. Device wherein the pipe wall is reinforced by an embedded
element.
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175 | .. Clay, concrete or masonry: |
This subclass is indented under subclass 174. Device wherein said wall is clay, concrete or masonry.
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176 | ... Reinforcement under tension: |
This subclass is indented under subclass 175. Device wherein the reinforcement is tensioned to prestress the clay, concrete or masonry. | |
177 | STRUCTURE: |
This subclass is indented under the class definition. Subject matter relating to the make-up of the pipe wall
and not otherwise classifiable.
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178 | MISCELLANEOUS: |
This subclass is indented under the class definition. Subject matter not classifiable in any of the other subclasses. | |
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
This subclass has no definition. | |
DIG1 | ADHESIVE |
This subclass has no definition. | |
DIG2 | GLASS FIBER |
This subclass has no definition. | |
DIG3 | TEFLON™, KEL-F |
This subclass has no definition. | |
DIG4 | AIR CONDITIONING |
This subclass has no definition. | |
DIG5 | PRE-STRESS |
This subclass has no definition. | |
DIG6 | CORROSION |
This subclass has no definition. | |
DIG7 | RESINS |
This subclass has no definition. | |
DIG8 | BENT SHAPED RETAINED |
This subclass has no definition. | |
DIG9 | CELLULAR |
This subclass has no definition. | |
DIG10 | METAL FOIL |
This subclass has no definition. | |
DIG11 | SHAPE |
This subclass has no definition. | |