COLLAPSIBLE CHAIR
A chair operable between an extended configuration and a collapsed configuration includes one or more legs, a handle and a locking mechanism. The one or more legs support a seat and the handle extends away from the seat opposite the one or more legs. The locking mechanism includes a lock plug disposed in an elongate trough. Movement of the handle between the extended and collapsed configurations involves depressing the lock plug and flipping the trough to an opposite side of the lock plug.
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The present application is a continuation of U.S. patent application Ser. No. 16/414,691, filed May 16, 2019, now U.S. Pat. No. 10,019,929, which application claims the benefit under 35 U.S.C. § 119(e) of U.S. Provisional Patent Application Ser. No. 62/672,526, filed May 16, 2018, entitled COLLAPSIBLE CHAIR, which are hereby incorporated by reference in their entirety for all purposes.
TECHNICAL FIELDThe disclosure relates to chairs. More particularly, the disclosure relates to collapsible chairs.
INTRODUCTIONGenerally, collapsible chairs are used for seating in areas where permanent seating is not possible or practical. This includes outdoor and indoor events such as funerals, college graduations, religious services, sporting events and competitions, and the like. In addition, collapsible chairs may be used for any situation that may require extra seating.
Collapsible chairs exist which are operable between an extended configuration that provides a seating surface, and a collapsed configuration in which the chair may be transported. However, Applicant has found that these pre-existing collapsible chairs are not particularly suitable for travelers, particularly travelers with decreased mobility. For example, pre-existing chairs typically either have a collapsed configuration that is too large to carry onto a commercial airliner, or an extended configuration that does not provide adequate support for a user that has difficulty standing up and sitting down. Also, operating pre-existing collapsible chairs between extended and collapsed configurations (and/or securing these chairs in these configurations) typically involves manipulation of relatively complicated or inconvenient mechanisms.
BRIEF SUMMARYOne or more embodiments of a chair disclosed herein may overcome one or more of the above identified deficiencies of pre-existing collapsible chairs.
In a first example, a chair operable between an extended configuration and a collapsed configuration is provided. The chair may include one or more legs and a handle. The one or more legs may support a seat and the handle may extend away from the seat opposite the one or more legs. The chair may include a locking mechanism having a lock plug disposed in an elongate trough. Movement of the handle between the extended and collapsed configurations may involve depressing the lock plug and flipping the trough to an opposite side of the lock plug.
In a second example, a chair operable between an extended configuration and a collapsed configuration may include one or more legs and a handle. The one or more legs may support a seat, and the handle may extend away from the seat opposite the one or more legs. The handle and the seat may be pivotally connected to at least one of the legs about a combined pivot axis.
In a third example, a chair operable between an extended configuration and a collapsed configuration may include one or more legs, a handle, and a joint. The one or more legs may support a seat and the handle may extend away from the seat opposite the one or more legs. The joint may pivotally connect the handle to at least one of the legs about a handle pivot axis. The joint may include a locking mechanism for selectively securing the handle in the extended and collapsed configurations.
Appendix A includes other drawings that illustrate other features of the inventions.
Those with ordinary skill in the art will appreciate that the elements in the drawings are illustrated for simplicity and clarity and are not necessarily drawn to scale. For example, the dimensions of some of the elements in the drawings may be exaggerated, relative to other elements, in order to improve the understanding of the disclosure.
There may be additional structures described in the description that are not depicted in the drawings, and the absence of such a drawing should not be considered as an omission of such design from the specification.
DETAILED DESCRIPTIONThe one or more legs may support seat 107. For example, respective lower portions 102a, 104a, and 106a of legs 102, 104, and 106 may include respective feet 111 that may be positioned on the ground to substantially stabilize seat 107 against vertical and lateral forces.
First leg 102 may be a rear leg of chair 100, and second and third legs 104 and 106 may be a pair of front legs of chair 100. For example, a user may sit on seat 107, with handle 108 extending outward ward underneath the seat 107. Second and third legs 104 and 106 of chair 100 may press against the ground proximate the legs of the user, and first leg 102 may press against the ground under and/or behind the user's posterior. In this position, the user may easily grasp handle 108, shown here as resembling a closed loop handle, for increased stability. In this extended configuration, seat 107 may be generally parallel to the ground and may define a sitting surface for the user to sit thereon comfortably.
Chair 100 may be operable between an extended configuration (shown in
In the collapsed configuration (see
Applicant has found that incorporating one or more of the following features into a chair, according to aspects of the present disclosure, may provide for both increased stability and convenience of the chair in the extended and/or collapsed configurations (and/or movement there between).
For example, chair 100 may include a joint 110 (shown in
The one or more legs may be pivotally connected to one another about a leg pivot axis A2. Second leg 104 may include an upper portion 104b connected to lower portion 104a by a central portion 104c. Third leg 106 may include an upper portion 106b connected to lower portion 106a by a central portion 106c. Central portion 102c of first leg 102 may be pivotally connected to central portions 104c and 106c of respective legs 104 and 106.
Seat 107 may include first and second seat slots 112 and 114. Upper portion 104b of leg 104 may include a pin 116 slidingly engaged in slot 112, and upper portion 106b of leg 106 may include a pin 118 slidingly engaged in slot 114. Pins 116 and 118 may define a sliding axis A3. As shown, axes A3, A2, and A1 may be parallel to one another.
Upper portions 104b and 106b of legs 104 and 106 may pivot toward upper portion 102b of leg 102 about axis A2, as lower portions 104a and 106a of legs 104 and 106 pivot toward lower portion 102a of leg 102 about axis A2, which may also involve axis A3 (and associated upper portions 104b and 106b) sliding in respective seat slots 112 and 114 toward joint 110.
Seat 107 may also be pivotally connected to leg 102 about axis A1, thus axis A1 may be described as a combined pivot axis for both handle 108 and seat 107. In other embodiments, seat 107 and handle 108 may be pivotally connected to leg 102 about different pivot axes.
Seat 107 may pivot about axis A1 towards axis A2 (see
Seat 107 may pivot about axis A1 toward axis A2 (see
Each of lower portions 102a, 104a, and 106a of legs 102, 104 and 106 may include a push button mechanism 122. Mechanism 122 may be configured to allow for the lower portions 102a, 104a, and 106a of the legs 102, 104 and 106 to be selectively telescoped in (e.g., toward axis A2) and to be selectively telescoped out (e.g., away from axis A2).
As can be seen in
Plug 126 may have a pair of slots 127 extending substantially parallel to an elongate direction of plug 126. The pair of slots 127 may be on opposite sides of plug 126. Spring 130 may be disposed in a hollow recess of plug 126 (see
Trough 128 may wrap around and/or frictionally engage upper portion 102b of leg 102. Pin 132 may provide a surface upon which spring 130 may press to bias lock plug 126 to an OUT position, as will be described below in more detail. Trough 128 may wrap around and/or frictionally engage upper portion 102b of leg 102.
Second leg 104 and third leg 106 may be cylindrical pipes bent at their respective central portions, and may have equal lengths.
As shown in
In an embodiment, leg 104 may move from the extended configuration to the collapsed configuration (shown in
As shown in
For example, when the user sits on seat 107, a rearward load (in a direction away from front portion 107b and toward rear end portion 107a) and a downward load may be exerted on cantilevered upper portions 104b and 106b. If these loads were applied to pins 116 and 118, then these pins may bend, or in some cases may break (e.g., if the user is relatively large). However, by providing wall portions against which top and rear surfaces of upper portions 104b and 106b may press in the extended configuration, any load on pins 116 and 118 may be eliminated (or greatly reduced).
For example, as shown in
As shown in
As shown in
In some embodiments, pocket 180 may wrap upper portion 104b of leg 104, and pocket 182 may wrap upper portion 106b of leg 106. The rear (or back) surface of upper portion 104b of leg 104 may bear against a back wall portion 108b of pocket 180, and the rear (or back) surface of upper portion 106b of leg 106 may bear against back wall portion 182b of pocket 182. The top surface of upper portion 104b of leg 104 may bear against upper wall portion 180a, and the top surface of upper portion 106b of leg 106 may bear against upper wall portion 182a of pocket 182. In some embodiments, the upper wall portions of pockets 180 and 182 may be bottom surfaces of seat 107.
The lower portions of legs 102 and 104 (and leg 106) may be telescoped in toward trough 128 in a direction D4. A telescoped out position of legs 102 and 104 is shown in
In
As described above, seat 107 may be adapted to pivot toward leg pivot axis A2 in direction D4, which may position upper portions 102b, 104b and 106b of first, second, and third legs 102, 104 and 106 between seat 107 and handle 108, as shown in
It may not be noted that third leg 106 may also move simultaneously with second leg 104 in a direction opposite to direction D3 when seat 107 moves in direction D3. Third leg 106 may be aligned with second leg 104 and first leg 102 when seat 107 is in the collapsed configuration.
As shown in
In some embodiments, any one of apertures 120 (see
Now referring to
Trough 128 may be configured to wrap around a first side 150 of first leg 102 when handle 108 is in the extended configuration.
As shown in
As shown in
Lock plug 126 of joint 110 may be operable between an IN state (or IN position) and the OUT state (or OUT position). In
As shown in
Handle 108 may be moved between the extended configuration (see
The IN position of lock plug 126 may correspond to distal end 126a of lock plug 126 depressed to first end portion trough 128 to allow handle 108 to pivot about handle pivot axis A1 between the extended and collapsed configurations. In this IN position (see
In some embodiments, central portion may frictionally engage depressed lock plug 126 and may apply appropriate pressure against a biasing force provided by spring 130 so that lock plug 126 may remain in the depressed position (i.e., the IN position) when handle 108 is moved between the extended configuration and the collapsed configuration (see
As previously described, lock plug 126 may be biased to the OUT state, for example, by spring 130. For example, spring 130 may apply a force on lock plug 126 in a direction from the IN state toward the OUT state. For example, as shown in
In the IN position of lock plug 126 shown in
As depicted, when the pull handle 1004 is pulled outward in the direction E1, the cords 106A and 1066 drag with them the legs 104 and 106 to direction E2 on the slots 112 and 114 thereby pulling the chair to an extended configuration as also depicted in
The disclosure set forth above may encompass multiple distinct inventions with independent utility. Although each of these inventions has been disclosed in its preferred form(s), the specific embodiments thereof as disclosed and illustrated herein are not to be considered in a limiting sense, because numerous variations are possible. The subject matter of the inventions includes all novel and nonobvious combinations and subcombinations of the various elements, features, functions, and/or properties disclosed herein. The following claims particularly point out certain combinations and subcombinations regarded as novel and nonobvious. Inventions embodied in other combinations and subcombinations of features, functions, elements, and/or properties may be claimed in applications claiming priority from this or a related application. Such claims, whether directed to a different invention or to the same invention, and whether broader, narrower, equal, or different in scope to the original claims, also are regarded as included within the subject matter of the inventions of the present disclosure.
Claims
1. A chair operable between an extended configuration and a collapsed configuration, the chair comprising:
- one or more legs supporting a seat;
- a handle extending away from a bottom portion of the seat opposite the one or more legs; and
- a locking mechanism including a lock plug disposed in an elongate trough, wherein moving the handle between the extended and collapsed configurations involves depressing the lock plug and flipping the trough to an angular position with the lock plug.
2. The chair of claim 1, wherein the one or more legs include a first leg, a second leg, and a third leg, the trough pivotally connecting the handle to the first leg about a handle pivot axis.
3. The chair of claim 2, wherein the trough is configured to wrap around a first side of the first leg when the handle is in the extended configuration, and to unwrap from the first leg when the handle is in the collapsed configuration.
4. The chair of claim 2, wherein each of the legs includes a lower portion, an upper portion, and a central portion connecting the lower portion to the upper portion, the central portion of the first leg being pivotally connected to the central portions of the second and third legs, a front portion of the seat being pivotally connected to the upper portion of first leg about a seat pivot axis, the seat including a slot extending from a rear portion of the seat toward the front portion of the seat, at least one of the upper portions of the second and third legs including a pin slidingly engaged in the slot, and movement of the chair from the extended configuration toward the collapsed configuration involves the pin sliding in the slot toward the seat pivot axis as the lower portions of the second and third legs pivot toward the lower portion of the first leg.
5. The chair of claim 4, wherein the trough pivotally connects the handle to the upper portion of the first leg about the handle pivot axis, and operating the chair from the extended configuration toward the collapsed configuration involves pivoting the handle about the handle pivot axis toward the leg pivot axis to position the upper portions of the first, second, and third legs between the seat and the handle.
6. The chair of claim 5, wherein operating the chair from the extended configuration to the collapsed configuration involves telescoping in the lower portions of the first, second, and third legs toward the trough.
7. The chair of claim 6, wherein the chair in the collapsed configuration has an overall length that is less than or equal to a predetermined longest allowable exterior dimension of a carry-on airline luggage piece.
8. A chair operable between an extended configuration and a collapsed configuration, the chair comprising:
- one or more legs supporting a seat, and
- a handle extending away from a bottom portion of the seat opposite the one or more legs, wherein the handle and the seat are pivotally connected to at least one of the legs about a combined pivot axis.
9. The chair of claim 8, the one or more legs includes a first leg, a second leg, and a third leg, each of the legs including a central portion connecting a lower portion to an upper portion, the central portion of the first leg being pivotally connected to the central portions of the second and third legs about a leg pivot axis, the handle and the seat being pivotally connected to the upper portion of the first leg about the combined pivot axis.
10. The chair of claim 9, wherein operating the chair from the extended configuration toward the collapsed configuration involves pivoting of the upper portions of the second and third legs toward the upper portion of the first leg about the leg pivot axis, pivoting of the seat about the combined pivot axis in a first direction, and pivoting of the handle about the combined pivot axis in a second direction opposite the first direction to position the first, second, and third legs between the seat and the handle.
11. The chair of claim 10, wherein the handle includes a trough, the combined pivot axis passing through the trough, the chair including a lock plug operable between an OUT position and an IN position, the OUT position corresponding to the lock plug extending into and frictionally engaging a portion of the trough extending away from the upper portion of the first leg, the IN position corresponding to the lock plug depressed toward the central portion of first leg to allow the handle to pivot about the combined pivot axis.
12. The chair of claim 11, wherein the first leg includes a bore extending from the upper portion of the first leg toward the central portion of the first leg, the lock plug extending further into the bore when the lock plug is in the IN position than when the lock plug is in the OUT position.
13. A chair operable between an extended configuration and a collapsed configuration, the chair comprising:
- one or more legs supporting a seat;
- a handle extending away from a bottom portion of the seat; and
- a joint pivotally connecting the handle to at least one of the legs about a handle pivot axis, the joint including a locking mechanism for selectively securing the handle in the extended and collapsed configurations.
14. The chair of claim 13, wherein the locking mechanism includes a lock plug and a trough, the lock plug having a distal end, the trough having a central portion disposed between first and second end portions, the lock plug being operable between an IN state and an OUT state, the OUT state corresponding to the distal end of the lock plug positioned proximal the first end portion of the trough when the handle is in the extended configuration such that the lock plug frictionally engages the first end portion of the trough to prevent the handle from moving to the collapsed configuration.
15. The chair of claim 14, wherein the OUT state of the lock plug corresponds to the distal end of the lock plug positioned proximal the second end portion of the trough when the handle is in the collapsed configuration such that the lock plug frictionally engages the second end portion of the trough to prevent the handle from moving to the extended configuration.
16. The chair of claim 15, wherein the central portion of the trough has a greater depth than the first and second end portions of the trough in a direction perpendicular to the handle pivot axis and an elongate direction of the trough, and the IN state of the lock plug corresponds to the distal end of the lock plug depressed to the central portion of the trough to allow the handle to pivot about the handle pivot axis between the extended and collapsed configurations.
17. The chair of claim 16, wherein the lock plug is biased by a spring toward the OUT state.
18. The chair of claim 13, wherein the one or more legs includes a first leg, a second leg, and a third leg, each of the legs including a central portion connecting a lower portion to an upper portion, the central portion of the first leg being pivotally connected to the central portions of the second and third legs about a leg pivot axis, the joint pivotally connecting the handle to the upper portion of the first leg about the handle pivot axis, and operating the chair from the extended configuration to the collapsed configuration involves pivoting the first leg relative to the second and third legs about the leg pivot axis, and pivoting the handle toward the leg pivot axis about the handle pivot axis to position the first leg, the second leg, the third leg, and the handle in a substantially flat configuration.
19. The chair of claim 18, wherein the seat includes a front portion, a rear portion, and a pair of slots extending from the rear portion toward the front portion, the front portion of the seat being pivotally connected to the upper portion of the first leg about a seat pivot axis, the upper portions of the second and third legs including respective pins that are slidingly engaged in the slots, and operating the chair from extended configuration to the collapsed configuration involves the pins sliding toward the front portion of the seat, and the seat pivoting toward the leg pivot axis to position the upper portions of the first, second, and third legs between the seat and the handle.
20. The chair of claim 19, wherein the pins define a sliding axis that is offset from the seat pivot axis in the collapsed configuration, and the handle secured in the collapsed configuration prevents pivoting the upper portions of the second and third legs relative to the upper portion of the first leg and thereby prevents the seat from moving to the extended configuration.
Type: Application
Filed: May 28, 2021
Publication Date: Sep 16, 2021
Applicant: ABIDA LLC (Camas, WA)
Inventors: Roland A. HAERTL (Camas, WA), David E. GILMAN (Camas, WA), Chase T. THOMPSON (Lake Oswego, OR)
Application Number: 17/334,244