Class Definition for Class 297

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CLASS 297,	CHAIRS AND SEATS
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SECTION I - CLASS DEFINITION

Devices for supporting the weight of a person in a seated position including chairs, seats, and ancillary devices not elsewhere classifiable.

(1) Note. A seat is a support for bearing the weight of a person in a sitting position. It comprises (1) a bottom contoured to conform to the shape of the buttocks of the occupant or (2) supports for two or more different areas of the occupant"s body or (3) any support surface disclosed as a buttocks support in combination with a means, such as a table, desk or an additional buttocks support, which limits the use of such surface to the disclosed use. As used in this class, the term "seat" is distinguished from the term "bottom" in that the bottom is the buttock supporting portion of a seat. For the location of the definitions of a chair, a bottom, and a back, see Subclass References To The Current Class below.

SECTION II - SUBCLASS REFERENCES TO THE CURRENT CLASS

SEE OR SEARCH THIS CLASS, SUBCLASS:

411.1,	for a support engaging the armpit of a seated person.
445.1,	for the definition of a chair.
452.1,	for the definition of a chair back and bottom..

SECTION III - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

4,	Baths, Closets, Sinks, and Spittoons, subclasses 234+ for a closet seat with a cover or lid and subclasses 237+ for a closet seat, per se, especially subclass 239 for a detachable child"s seat. A bottom having an opening is retained in this class (297). To be classified in Class 4, additional commode structure must be present, such as a receiver, a plug for the opening, a deflector shield, means for attaching the seat to the opening, etc.
5,	Beds, subclasses 12.1+ for sofas convertible to beds, subclasses 600+ for beds having movable sections adjustable relative to each other to support an occupant in a reclining or sitting position, subclasses 131+ for cushioned supporting surfaces spaced from the floor and capable of supporting an occupant in either a recumbent or sitting position, and subclasses 652+ for cushions, per se, of general utility. The art in Class 5, especially in subclasses 12.1+ and 600+, is often structurally and functionally indistinguishable from that in this class (297).
52,	Static Structures (e.g., Buildings), appropriate subclasses for a panel of general utility even though disclosed or defined as being a component of a chair or seat.
56,	Harvesters, subclass 323 for a seat combined with a machine of that class.
70,	Locks, subclass 261 for locks for seats to prevent unauthorized use thereof.
104,	Railways, subclass 115 for a chair or seat mounted on a cable railway, e.g., a ski lift.
105,	Railway Rolling Stock, subclass 322 for railway cars having sleeping berth, wherein a seat back forms the upper berths, and subclasses 345+ for seats built in the forming parts of a car structure.
114,	Ships, subclass 194 for self-leveling chairs attached to a ship, and subclass 363 for a seat combined with a boat.
128,	Surgery, appropriate subclasses for a seat combined with a means to treat the body, particularly subclass 33 for a seat combined with a vibrating massager.
144,	Woodworking, subclasses 329+ for a process of making a chair or seat of wood.
160,	Flexible or Portable Closure, Partition, or Panel, appropriate subclasses, for a flexible or portable panel usable as a seat back or bottom, especially subclasses 87+ for plural panels; subclasses 327+ for a panel supported at opposite edges by elongated elements; subclasses 371+ for a panel mounted in a frame, and subclasses 383+ for means to fasten one edge of a fabric panel to an elongated supporting element.
172,	Earth Working, subclass 431 for a seat combined with a machine of that class.
244,	Aeronautics and Astronautics, subclass 122 for an aircraft fuselage having a seat.
248,	Supports, subclass 118 for a headrest or armrest not disclosed as used in conjunction with a device of this class (297) and subclasses 127+ for a stand comprising a generally horizontal article supporting surface combined with depending substructure to space the surface from the floor or ground.
267,	Spring Devices, subclasses 80+ for springs and their framework for bottom and back cushions. They may include diverse types of spring material such as rubber and metal, and spring structures having different coefficients of resiliency for different areas of the cushion. See, also, subclass 117 for the structure of a fluid spring for the same use; and subclasses 142+ for other types of spring elements in a spring device for such use.
280,	Land Vehicles, appropriate subclasses, for the combination of a vehicle of the type there classified and a chair or seat. The mere recitation of wheels or running gear on a chair or seat is insufficient to characterize that device as a Class 280 Vehicle; consequently patents having such structure have been classified in this class (297) on other features. However, additional vehicle features such as removable or retractable running gear, a push handle, means to propel the vehicle, a steering wheel or tiller, are examples of vehicle structure details which characterize the device as a vehicle for Class 280. Moreover, in the "baby walker" type of seat, a wheel-mounted bottom modified to enable the occupant to engage the floor or ground with his feet to move the vehicle (as by providing leg cut-outs, or by mounting the seat between the wheels) is a vehicle for Class 280. See especially subclasses 5.2+ for an invalid wheel chair having means for ascending and descending steps or similar obstructions; subclasses 7.1+ for a device convertible from a vehicle to a nonvehicle; subclasses 638+ for a seat having a running gear extensible relative to the seat to raise or lower the seat or to extend the wheels from an inoperative to an operative position; subclasses 200+ for a vehicle having occupant propelling means; subclasses 87.051+ for a vehicle propelled by the foot contact of an occupant with the floor (baby walker); and subclasses 47.38+ for a vehicle such as a baby carriage propelled by a handle.
296,	Land Vehicles: Bodies and Tops, subclasses 63+ for a seat combined with a land vehicle body, particularly subclass 64 for the arrangement of a plurality of seats within a vehicle.
446,	Amusement Devices: Toys, subclass 482 for toy chairs or seats.
606,	Surgery, subclass 242 for a seat having an orthopedic device designed to adjust unfractured bones into their normal position.

SUBCLASSES

[List of Patents for class 297 subclass 1]

SEATING DEVICE REORIENTS AS UNIT

This subclass is indented under the class definition. Device comprising seat which may be rotated as a unit, a portion of a revolution about a horizontal axis, to present a previously inaccessible supporting surface for use at the same time the initial occupant supporting surface is rotated to a nonuse or different use position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

92+,	for a device having a fixed standard or leg structure and wherein a bottom and back are rotatable relative to such structure to interchange their function.

[List of Patents for class 297 subclass 2]

To expose nonoccupant support

This subclass is indented under subclass 1. Device wherein the previously inaccessible supporting surface is not classifiable, per se, in this class and is not used to support a person.

SEE OR SEARCH THIS CLASS, SUBCLASS:

123,	for a bottom and back movable as a unit to convert to a table.
129,	for a seat convertible to a nonseating device.

[List of Patents for class 297 subclass 3]

Inverting

This subclass is indented under subclass 1. Device wherein the seat is turned end for end to expose the previously inaccessible supporting surface on the reverse side thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

283.1+,

for a support surface which is inverted to expose the reverse side thereof.

SEE OR SEARCH CLASS:

182,	Fire Escape, Ladder, or Scaffold, subclass 33.2 for a seat in which the bottom and legs invert to unveil a ladder.

[List of Patents for class 297 subclass 4]

PORTABLE BOTTOM WITH OCCUPANT ATTACHER

This subclass is indented under the class definition. Device wherein a bottom is provided with means for attaching said bottom to the body of the occupant, so as to permit said occupant to walk about, carrying the bottom with him.

SEE OR SEARCH THIS CLASS, SUBCLASS:

393,	for an occupant attached headrest.

SEE OR SEARCH CLASS:

220,	Receptacles, subclass 17.1 for a leg or lap attached metallic receptacle.
224,	Package and Article Carriers, subclasses 101+ for a body and belt attached article carrier.
441,	Buoys, Rafts, and Aquatic Devices, subclasses 130+ for a body supporting buoyant device with a seat.

[List of Patents for class 297 subclass 5]

WITH OCCUPANT-PROPELLED WALKER OR SKATER FRAME

This subclass is indented under the class definition. Device comprising a self-supporting frame, provided with a buttock support, for assisting a person in learning to walk; or for supporting skaters or ambulant invalids in a standing position.

(1) Note. In general, walker and skater frames are elsewhere, depending on the mode of use. Perfecting features may result in classification elsewhere, as indicated by the search notes below. The addition of a seat compels classification in this class (297). However, see the Search Class notes below for the line between Class 280 and Class 297.

SEE OR SEARCH CLASS:

135,	Tent, Canopy, Umbrella, or Cane, subclass 67 for walkers, per se, (i.e., without seats, wheels, or path control), operable by lifting from, moving across, and replacing on the ground, floor, or the like.
280,	Land Vehicles, subclass 7.1 for wheeled walkers propelled by seat occupants and convertible to a different device, such as a stroller, subclasses 43+ for walkers having retractable wheels; subclasses 87.051 for wheeled walkers propelled and steered by seated occupants; and subclasses 809+ for skaters" appliances and attachments. Class 280 is superior to Class 297, and a vehicle feature in these devices (see the note to Class 280 in the class definition of Class 297) will result in classification there, except that the further inclusion of means exterior of the device restricting its travel to a predetermined path makes it an amusement device or an exercise device for placement elsewhre.
472,	Amusement Devices, subclasses 1+ for a skater or walker supporting roundabout restricted to a circuitous path, particularly subclasses 14+ for an occupant propelled roundabout and subclass 15 for a trainer for foot travel.
482,	Exercise Devices, subclasses 51+ for an exercise device which may support a skater or walker, particularly subclasses 66+ for an occupant-propelled support frame having a movement facilitating feature, e.g., a runner, wheel, etc., for foot travel and subclass 69 for an exercise device for suspending the occupant from above, e.g., a body harness, etc., for foot travel.

[List of Patents for class 297 subclass 6]

Bottom movable to nonuse position

This subclass is indented under subclass 5. Device wherein a bottom is movable to an inoperative position either by folding against the walker frame or by detaching from the walker frame, so as to permit the user to enter or leave the frame or to move to a standing position to propel the frame.

SEE OR SEARCH THIS CLASS, SUBCLASS:

331+,	for a bottom tiltable to an inoperative position.
440.1+,	for interfitting components detachably connected by a manipulated joint.

[List of Patents for class 297 subclass 7]

WITH REMOVABLE OR REORIENTABLE CRIB SIDE

This subclass is indented under the class definition. Device wherein the seat is provided with a guard or barrier to enclose the device to facilitate its use as a crib, and wherein the barrier is so mounted that it may be detached, moved to a nonuse position, or moved to a different use position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

129,	for a seat convertible to a nonoccupant supporting device.
464+,	particularly subclasses 487+ for a device to confine a seated occupant within or upon a seat. The device there classified permits an occupant to remain seated; the device in these subclasses (7+) block that portion of the bottom over which the legs extend, or raises the leg rest to a horizontal position or otherwise prohibits use of the device as a seat while the crib side is in position.

SEE OR SEARCH CLASS:

5,	Beds, subclasses 93.1+ for a crib, per se, particularly subclass 100 for a movable guard.

8	Fabric crib side
	This subclass is indented under subclass 7. Device in which the crib side is made of a flaccid cloth.

9	Side added to front edge of bottom
	This subclass is indented under subclass 7. Device wherein a side element is movable to that edge of the bottom opposite the edge from which the back extends and said side element extends from side to side of the bottom along that edge.

[List of Patents for class 297 subclass 10]

Side storable within or upon seating device

This subclass is indented under subclass 7. Device wherein the crib side, in its nonuse position, is confined inside or foldable against a component of the device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

105+,	for a supplementary body support storable within or upon a bottom.
112+,	for a supplementary body support storable within or upon a back.

11	Within or upon armrest
	This subclass is indented under subclass 10. Device in which the crib side is confined inside or foldable upon the armrest.

[List of Patents for class 297 subclass 12]

Side withdrawn laterally of device

This subclass is indented under subclass 10. Device in which the crib side is stored within or upon the side of the seat and is unfolded or taken sidewardly out of the seat.

SEE OR SEARCH THIS CLASS, SUBCLASS:

107,	for a supplemental body support extensible laterally of the device.
115+,	for an armrest extensible sideways to plural use positions.

[List of Patents for class 297 subclass 13]

FOLDING BOTTOM PERMITS SEAT ROTATION ABOUT VERTICAL AXIS

This subclass is indented under the class definition. Device comprising a seat mounted for movement about a vertical axis including a bottom movable from a substantially horizontal use position to a substantially vertical nonuse position, said seat being held against rotation when the bottom is in the use position, but released for rotation by movement of the bottom to a nonuse position.

SEE OR SEARCH THIS CLASS, SUBCLASS:

240,	for relatively rotatable plural related seats.
324,	for a seat in which the back is moved by folding of the bottom.
331+,	for a bottom movable to an inoperative position, and see the search notes thereto for the field of search for folding bottoms.

SEE OR SEARCH CLASS:

248,	Supports, subclass 418 for a rotatable support surface on a standard having means to inhibit rotation, and subclass 425 for a stand having a rotatable support surface provided with means to inhibit rotation.

[List of Patents for class 297 subclass 14]

BOTTOM AND BACK CONNECTED TO AND FOLDABLE IN WALL OR PARTITION

This subclass is indented under the class definition. Device comprising a bottom and back attached to a wall or partition having a recess or chamber which forms a housing therein, said bottom and back moving from an occupant supporting position outside said housing to a collapsed position within the confines of the housing.

(1) Note. A wall or partition as set forth above is limited to a building wall, e.g., room walls, floors, etc., as distinguished from a panel incorporated in a bottom or back of a seat.

SEE OR SEARCH THIS CLASS, SUBCLASS:

147,	for a seat combined with a table and extensible from a wall or receptacle.
234+,	for a seat foldable on or in a component of another seat.
324,	for an interconnected bottom and back wherein the back is moved by folding of the bottom.

SEE OR SEARCH CLASS:

108,	Horizontally Supported Planar Surfaces, subclasses 33+ for a horizontally supported planar surface combined with a housing and subclasses 42+ for a horizontally supported planar surface combined with other structure.
248,	Supports, subclass 240.1 for a shelf stored in a wall housing.
312,	Supports: Cabinet Structure, subclasses 235.1+ for a seat combined with a cabinet wherein the cabinet housing provides means for storing articles in addition to the seat, and subclasses 242+ for a cabinet mounted on a wall or panel recess.

[List of Patents for class 297 subclass 15]

In floor

This subclass is indented under subclass 14. Device wherein the housing is located in the floor.

SEE OR SEARCH CLASS:

296,	Land Vehicles: Bodies and Tops, subclass 66 for a vehicle seat which folds to form a portion of the vehicle body (e.g., vehicle floor).

[List of Patents for class 297 subclass 16.1]

16.1

COLLAPSIBLE CHAIR; I.E., RELATIVELY FOLDING BOTTOM, BACK, AND LEGS:

This subclass is indented under the class definition. Device comprising a bottom, back, and leg wherein two of these components fold relative to the third component and to each other, and wherein one of the said two folding components is a leg.

SEE OR SEARCH THIS CLASS, SUBCLASS:

147,	for a combined table and seat foldable into a wall or receptacle.
331+,	for a bottom tiltable into an operative position, and see the search notes thereunder for the field of search for folding bottoms.
378.1+,	for a seat provided with a back which is articulated to other components of the seat to swing forwardly about such articulation to overlie the bottom; i.e., to a nonuse position.

16.2	Collapsed to a compact bundle having all rigid elongated elements extending in a single longitudinal direction:
	This subclass is indented under subclass 16.1. Device comprising a plurality of stiff elongated members each having a longitudinal axis, wherein all of the elongated members when in collapsed form lie adjacent to one another and extend in a single longitudinal direction parallel to their longitudinal axes.

[List of Patents for class 297 subclass 17]

Collapsed components form self-contained carrying case

This subclass is indented under subclass 16. Device provided with a portable receptacle as an integral component thereof within which the folding components may be collapsed, or wherein portions of said device cooperate to form a substantially totally enclosed portable receptacle for the remainder of the folding elements when in collapsed condition.

SEE OR SEARCH THIS CLASS, SUBCLASS:

14+,	for a bottom and back connected to and foldable in a wall or partition.
139,	for a seat combined with a table wherein the table forms a carrying case for said seat.

[List of Patents for class 297 subclass 18]

Nonpivoted crossed legs

This subclass is indented under subclass 16.1. Device comprising a pair of legs which overlap each other intermediate the ends thereof with one of said legs extending from a lower front floor or base engaging position to an upper rear position, and the other of said legs extending from an upper front position to a lower rear floor or base engaging position without any direct connection intermediate the ends thereof.

SEE OR SEARCH THIS CLASS, SUBCLASS:

258+,	and see the notes thereto for a rocker mounted seat.
300.1+,	for a bottom and back which are tiltable about a fixed pivot and wherein the tilting movement is resisted by a spring.
325+,	for a bottom and back tiltable as a unit.

[List of Patents for class 297 subclass 19]

With means to hold chair in plural operative configurations

This subclass is indented under subclass 16.1. Device which may be oriented to a plurality of occupant supporting positions and comprising detent means which must be manipulated to achieve each particular orientation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

68+,	for a leg or footrest interconnected to move relative to a bottom and concurrent with a back.
316+,	for a bottom and back combination in which the back moves relative to a tilting bottom as the bottom tilts.
327+,	for a bottom and back combination tiltable as a unit about a stationary horizontal pivot to plural use positions.
354.12+,	for a back tiltable to plural distinct occupant supporting positions.

[List of Patents for class 297 subclass 20]

By adjustable leg-to-rocker connection

This subclass is indented under subclass 19. Device provided with a rocker and wherein a leg is selectively engageable at various locations along said rocker.

SEE OR SEARCH THIS CLASS, SUBCLASS:

32+,	for a chair with folding rocker.
131+,	for a chair with rocker retractable to inoperative position.
133,	for a chair with detachable rocker.
258+,	for a noncollapsible rocker mounted chair.

21	Set means operative between back post and rear leg
	This subclass is indented under subclass 19. Device having a back post or frame provided with a member, integral therewith or carried thereby, which is settable at plural locations along a rear leg.

[List of Patents for class 297 subclass 22]

Back-to-leg prop

This subclass is indented under subclass 21. Device wherein the settable member is a spraglike element, one end of which is pivotally connected to the back post and the other end of which is selectively engageable at various locations along a rear leg.

SEE OR SEARCH THIS CLASS, SUBCLASS:

377,	for a tiltable back capable of assuming a plurality of occupant supporting positions by means of a prop behind said back.

[List of Patents for class 297 subclass 23]

Single element forms back post and front leg

This subclass is indented under subclass 22. Device wherein the back post is an integral extension of the front leg.

SEE OR SEARCH THIS CLASS, SUBCLASS:

55+,	for relatively collapsible bottom, rear legs, and integral back and front leg.

24	Set means interconnects front leg and rear leg
	This subclass is indented under subclass 19. Device wherein said manipulatable means adjustably join a front leg to a rear leg.

25	Brace or tie interconnection
	This subclass is indented under subclass 24. Device wherein said manipulatable means comprises a brace or tie element.

26	Bottom forms or supported by tie
	This subclass is indented under subclass 25. Device wherein said brace or tie element either comprises or provides direct support for a bottom.

[List of Patents for class 297 subclass 27]

Set means include armrest

This subclass is indented under subclass 19. Device wherein a part of said manipulatable means is carried by or carries an armrest.

SEE OR SEARCH THIS CLASS, SUBCLASS:

359+,

for a noncollapsible seat provided with a back capable of being arranged in a plurality of occupant supporting positions and wherein a back pivoted armrest carries or has connected thereto means for retaining the back in adjusted position.

28	Rigid with armrest
	This subclass is indented under subclass 27. Device wherein said part is either integral with or fixedly attached to said armrest portion.

[List of Patents for class 297 subclass 29]

Journaled connections of parts permit occupant to change configuration

This subclass is indented under subclass 16.1. Device wherein the components are pivoted to each other so as to be capable of assuming a plurality of occupant supporting arrangements.

(1) Note. The various arrangements are usually obtained by the occupant merely shifting his body as contrasted with subclasses 19+ wherein the occupant must manipulate detent means to achieve rearrangement of the chair.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19+,	for a chair rearrangeable to plural occupant supporting positions and provided with means which must be manipulated to achieve such rearrangement.

[List of Patents for class 297 subclass 30]

With concurrently folding footrest

This subclass is indented under subclass 16.1. Device provided with a footrest and wherein as the other components collapse the footrest collapses simultaneously therewith.

SEE OR SEARCH THIS CLASS, SUBCLASS:

68+,	for a footrest interconnected to move relative to a bottom and concurrently with a bottom or back.
423.19+,	for footrest connected to seat for relative movement.

31	Front leg folds relative to integral bottom-rear leg; e.g., beach type
	This subclass is indented under subclass 16.1. Device wherein the bottom and the rear leg are rigid and a front leg is foldable relative thereto.

[List of Patents for class 297 subclass 32]

With folding rocker

This subclass is indented under subclass 16.1. Device in which the chair includes rocker members as a component thereof and foldable therewith.

SEE OR SEARCH THIS CLASS, SUBCLASS:

258+,

for a rocker-mounted chair.

[List of Patents for class 297 subclass 33]

Rocker disengages from leg to permit folding

This subclass is indented under subclass 32. Device in which the rocker is disengageable from one of the legs to permit folding.

SEE OR SEARCH THIS CLASS, SUBCLASS:

131+,	for a rocker retractable to inoperative position.
133,	for a detachable rocker.

34	Rearwardly folding back
	This subclass is indented under subclass 16.1. Device wherein the back swings rearwardly and downwardly.

35	With folding armrest
	This subclass is indented under subclass 16.1. Device provided with an armrest articulated to one or more of the components and collapsible relative thereto.

36	Laterally swinging
	This subclass is indented under subclass 35. Device wherein the armrest swings sideways about a vertical axis or swings in a side-to-side direction about a horizontal axis.

37	To overlie or underlie bottom
	This subclass is indented under subclass 36. Device wherein the armrest swings in a side direction about a horizontal axis to rest on top of or beneath the bottom.

38	Slidably connected to chair component
	This subclass is indented under subclass 35. Device wherein the armrest is slidably connected to one of the components.

39	Back, arm, bottom, and front leg form collapsible parallelogram
	This subclass is indented under subclass 35. Device wherein the armrest in cooperation with the bottom, back, and front leg form a collapsible parallelogram.

40	Folds forwardly and downwardly
	This subclass is indented under subclass 35. Device wherein the armrest collapses forwardly and downwardly to a position adjacent the legs.

41	Pivoted to integral back and leg
	This subclass is indented under subclass 35. Device wherein the armrest is pivotally connected to a back having a leg as an integral extension thereof.

[List of Patents for class 297 subclass 42]

Laterally collapsible

This subclass is indented under subclass 16.1. Device wherein the chair collapses toward one side or from each side inwardly toward the center.

SEE OR SEARCH THIS CLASS, SUBCLASS:

314+,	for a laterally folding bottom.
350+,	for a laterally folding back.

SEE OR SEARCH CLASS:

248,	Supports, subclass 436 for a laterally folding, plural leg stand.

[List of Patents for class 297 subclass 43]

Against fixed standard

This subclass is indented under subclass 42. Device wherein the bottom, back, and legs fold sideways to a position adjacent an upright immovable element or surface.

SEE OR SEARCH THIS CLASS, SUBCLASS:

315,	for a bottom and back foldable laterally against a fixed standard.

[List of Patents for class 297 subclass 44]

Folding back or bottom sections

This subclass is indented under subclass 42. Device wherein the back or bottom is divided into parts which fold with respect to each other as the chair is collapsed laterally.

SEE OR SEARCH THIS CLASS, SUBCLASS:

312,	for a bottom comprising resiliently mounted, independently movable sections.

[List of Patents for class 297 subclass 45]

Fabric bottom and back

This subclass is indented under subclass 42. Device wherein the bottom and back supporting surfaces are made of a flaccid clothlike material.

SEE OR SEARCH THIS CLASS, SUBCLASS:

44,	for a collapsible chair having a fabric bottom or back foldable in sections.

[List of Patents for class 297 subclass 46]

Back and legs collapse concurrently

This subclass is indented under subclass 16.1. Device wherein the back and legs are movably joined to each other or to other chair components so that the back and the several legs each fold relative to the other and at the same time.

(1) Note. The chairs in this and the indented subclasses may include an integral back frame and leg pair as classified below in subclasses 55+ and 59+, but are distinguished from that art in that the chairs in the former subclasses have a back which moves relative to the back frame in its collapsing movement.

SEE OR SEARCH THIS CLASS, SUBCLASS:

55+,	for an integral back and front legs interconnected with the back legs to fold concurrently, and see (1) Note above.
59+,	for an integral back and rear legs interconnected with the front legs to fold concurrently, and see (1) Note above.

[List of Patents for class 297 subclass 47]

Parallel leg pairs

This subclass is indented under subclass 46. Device wherein the legs, in chair supporting position, extend generally in the same direction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

54,	for a chair having independently collapsible back and parallel legs.

48	Back articulated to both leg pairs
	This subclass is indented under subclass 46. Device wherein the back is joined to both the front legs and the rear legs.

49	Above and below bottom
	This subclass is indented under subclass 48. Device wherein the back is articulated to one pair of legs above the bottom and articulated to the other pair of legs below the bottom.

[List of Patents for class 297 subclass 50]

Back-to-leg articulation above back-to-bottom articulation

This subclass is indented under subclass 46. Device wherein the back is articulated to a leg above the articulation of the back to the bottom.

SEE OR SEARCH THIS CLASS, SUBCLASS:

58,	for a collapsible chair having a relatively collapsible bottom, rear legs, and integral back and front legs wherein the rear legs are pivoted to the back above the back-to-bottom connection.

[List of Patents for class 297 subclass 51]

Back and legs collapse independently

This subclass is indented under subclass 16.1. Device wherein the back is mounted to move independently of the movement of the legs.

SEE OR SEARCH THIS CLASS, SUBCLASS:

46+,	for a collapsible chair in which the back and a leg pair are interconnected to fold concurrently.

[List of Patents for class 297 subclass 52]

Back pivoted to and abutting a leg

This subclass is indented under subclass 51. Device wherein the back is pivotally connected to a leg and held in the erected use position by engaging a stop means on the leg.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47,	for a collapsible chair in which the back and legs fold simultaneously, and wherein the back is pivoted to and abuts a leg.

[List of Patents for class 297 subclass 53]

To overlie and underlie bottom

This subclass is indented under subclass 51. Device wherein the back collapses to a position superjacent the bottom and legs collapse to a position subjacent the bottom.

SEE OR SEARCH THIS CLASS, SUBCLASS:

37,	for a similar device which includes laterally folding armrests.
46+,	for a chair in which the back and legs fold concurrently to overlie and overlie the bottom.
52,	for similar devices wherein the back is pivoted to and abuts a stop on the leg in use position.
378.1+,	for a back foldable forwardly over the bottom.

[List of Patents for class 297 subclass 54]

Noncrossed legs

This subclass is indented under subclass 53. Device wherein the legs in chair supporting position are generally parallel with respect to each other.

SEE OR SEARCH THIS CLASS, SUBCLASS:

47,	for a chair having noncrossed legs in which the back and legs collapse simultaneously.

55	Relatively collapsible bottom, rear legs, and integral back and front legs
	This subclass is indented under subclass 16.1. Device wherein the relatively folding parts of the chair include a bottom, rear legs, and a unitary back and fron