Collapsible chair
Apparatus and associated methods relate to a collapsible chair having a collapsible lateral support rod, a pair of front legs, a pair of front chair support rods, and a pair of mechanical junctions configured to couple with an associated pair of poles, such that the collapsible chair is adapted to collapse into an easy-to-carry volume. In an illustrative example, the mechanical junctions may be releasably and/or shock-cord-coupled to various support rods and/or legs. The mechanical junctions may include locking mechanisms to lock the associated poles into a fixed position relative to the mechanical junctions, for example. The collapsible chair may include gear loops for hanging of gear from the collapsible chair. In various embodiments, a collapsible chair may advantageously provide a full size, lightweight chair configured for compact storage in a stowage bag for high portability during outdoor hiking.
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This application is a re-issue application of U.S. application Ser. No. 16/368,391, titled “Collapsible Chair,” filed Mar. 28, 2019 by Robert Steven Graybill, and issued as U.S. Pat. No. 10,531,740 on Jan. 14, 2020, which application is a continuation of U.S. Ser. No. 15/888,994, titled “Collapsible Chair,” filed by Robert Steven Graybill on Feb. 5, 2018, and issued as U.S. Pat. No. 10,285,503 on May 14, 2019, which application claims the benefit of U.S. Provisional Application Ser. No. 62/620,305, titled “Muhl and Capra Chairs,” filed by Robert Steven Graybill on Jan. 22, 2018. This application also and which claims the benefit of U.S. Provisional Application Ser. No. 62/535,709, titled “Collapsible Alpine Chair,” filed by Robert Steven Graybill on Jul. 21, 2017. This application also and which claims the benefit of U.S. Provisional Application Ser. No. 62/454,112, titled “Portable Collapsible Trekking Pole Chair,” filed by Robert Steven Graybill on Feb. 3, 2017and is a continuation of U.S. Ser. No. 15/888,994 now filed on Feb. 5, 2018 now U.S. Pat. No. 10,285,503.
This application incorporates the entire contents of the foregoing application(s) herein by reference.
TECHNICAL FIELDVarious embodiments relate generally to chairs.
BACKGROUNDChairs are pieces of furniture in which people may sit. A chair may include legs, a seat, and a back. The number of legs on a chair may be three, four, or more legs. A seat of a chair may be cushioned or non-cushioned. The back of a chair may be inclined or may form a 90-degree angle with respect to a horizontal chair seat.
There are different varieties of chairs. For example, a chair with arms may be referred to as an armchair. A chair with upholstery, reclining action, and a fold-out footrest may be referred to as a recliner. A permanently fixed chair in an airplane may be referred to as an airline seat. A chair used in an automobile may be referred to as a car seat. A chair with wheels may be referred to as a wheelchair.
SUMMARYApparatus and associated methods relate to a collapsible chair having a collapsible lateral support rod, a pair of front legs, a pair of front chair support rods, and a pair of mechanical junctions configured to couple with an associated pair of poles, such that the collapsible chair is adapted to collapse into an easy-to-carry volume. In an illustrative example, the mechanical junctions may be releasably and/or shock-cord-coupled to various support rods and/or legs. The mechanical junctions may include locking mechanisms to lock the associated poles into a fixed position relative to the mechanical junctions, for example. The collapsible chair may include gear loops for hanging of gear from the collapsible chair. In various embodiments, a collapsible chair may advantageously provide a full size, lightweight chair configured for compact storage in a stowage bag for high portability during outdoor hiking.
Various embodiments may achieve one or more advantages. For example, some embodiments may provide for a comfortable seating option when hiking in the wilderness. The collapsible chair may, for example, advantageously accommodate a tall and/or large person (e.g., taller than 6 ft.). The collapsible chair with a trapezoidal footprint may, in some examples, include added structural and stability for substantial tip-resistance. In some examples, the collapsible chair may be combined with poles (e.g., trekking, skiing), which may re-purposed to minimize the carrying weight of the chair for a hiking or skiing user. Deployment of the collapsible chair may, for example, be accomplished by shaking the chair in a collapsed state, which may facilitate self-assembly via various shock-cord-coupled components. The mechanical junctions may be flared to advantageously provide reinforced support and more resilient (e.g., fracture/crack resistant) ends of the mechanical junction.
The details of various embodiments are set forth in the accompanying drawings and the description below. Other features and advantages will be apparent from the description and drawings, and from the claims.
Like reference symbols in the various drawings indicate like elements.
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTSA stowed state 100B includes a stowage bag 140 and a pair of poles 115. The stowage bag 140 stores the collapsible chair 105 (in a collapsed state) in a small and compact volume, which may advantageously allow high portability of the collapsible chair 105 during outdoor hiking and trekking, for example.
In the exemplary depiction of
In
A user may manipulate the back legs 110 and front chair support rods 125 to transition the collapsible chair to a first intermediate deployed state 100D shown in
In
In
In some examples, the front leg 315 and back chair support rod 305 may be a single rod extending through the mechanical junction 330. In various embodiments, the front leg 315 may be fixedly coupled to the mechanical junction 330. In some embodiments, the back chair support rod 305 may be fixedly coupled to the mechanical junction 330. In some examples, the back chair support rod 305 may be separated into a first section and a second section that are shock-cord-coupled to one another. In some embodiments, the front leg 315 and back chair support rod 305 may perform functions similar to the pole 115 in
In various examples, the flexible chair seat 335 may include side cutout areas 336 that may advantageously provide a sitting user with relief in their lower back, bottom, and upper leg areas (e.g., near the user's hips). The flexible chair seat 335 may include side panels 337 that interface with a back (e.g., back “saddle”) of the flexible chair seat 335 to advantageously provide greater lumbar support for a sitting user. Furthermore, the placement of the side cutouts 335 may be optimized relative to a typical user's lumbar position. As an illustrative example, as force is applied to a bottom (e.g., bottom “saddle”) of the flexible chair seat 335 (as a result of the user sitting in the collapsible chair 300), this force may pull in the side panels 337, such that the cutouts 336 may tightly conform around the midsection of the user, thus providing greater lumbar support for the user (e.g., without having to use the straps 370 discussed below). The cutouts 336 may, for example, reduce the overall weight of the flexible chair seat 335. The cutouts 336 may, in some embodiments, advantageously allow the seat 335 to conform to the user in multiple seating positions (e.g., stool or upright, sitting or reclined, and slouching), rather than forcing the user into the shape of the seat.
Located on the flexible chair seat 335 are gear loops 340. The gear loops 340 may, for example, be located on an outer periphery of the flexible chair seat 335. In this exemplary embodiment, a pair of gear loops 340 are located on the front side edges of the flexible chair seat 335, and another pair of gear loops 340 are located on the top side edges of the flexible chair seat 335. The gear loops 340 may advantageously allow hanging of gear (e.g., a water bottle) from the collapsible Capra-chair 300 (or Muhl-Chair 100).
Located on a top inner portion of the flexible chair seat 335 is a lateral stiffener rod 345A. The lateral stiffener rod 345A provides upper structural support to the flexible chair seat 335 when the collapsible chair 300 is in a deployed state (e.g., 100A,
As shown in
Located on a bottom side of the flexible chair seat 335 is an underquilt 365. The underquilt 365 may be releasably coupled (e.g., attached via, for example, clips or hook and loop fasteners) to the flexible chair seat 335. The underquilt 365 may advantageously provide bottom thermal insulation, operate to trap heat, and/or mitigate cold airflow for a user when the user is sitting in the collapsible chair 300.
In
In
A top right section 375 includes a retained lateral stiffener rod 345A. The retained lateral stiffener rod 345A may transition to an entering/exiting lateral stiffener rod 345B. The lateral stiffener rod 345A, 345B is shown within the top lateral pocket 350 of the flexible chair seat 335. The top right section 375 includes a first stitching 380A and a second stitching 380B. The first and section stitchings 380A, 380B may define a top pocket section 385A and a bottom pocket section 385B of the top pocket 350. In some examples, the top pocket section 385A may be referred to as a “corner capture pocket.” The first stitching 380A may extend along a limited top lateral distance of the top right section 375, while the second stitching 380B may extend along substantially the entire top lateral distance of the flexible chair seat 335. The retained lateral stiffener rod 345A may be retained within a top pocket section 385A of the top pocket 350 by the first stitching 380A. The bottom boundary of the top pocket 350 may be defined by the second stitching 380B. Two different cross-sectional views of the top right section 375 are also shown in
In an exemplary illustration, a hiking user unpacks the collapsible chair 300 in a collapsed state (e.g., 100C,
In various examples, the first and second stitchings 380A, 380B may instead be (heat-)bonded sections of the flexible chair seat 335. For example, lateral lengths of the top pocket 350 may be (partially) fused together to create top and bottom pocket sections 385A, 385B of the top pocket 350. In some embodiments, the first and second stitchings 380A, 380B may instead be adhesives, such that lateral lengths of the top pocket 350 may be (partially) glued together to create top and bottom pocket sections 385A, 385B of the top pocket 350.
In some examples, the lateral stiffener rod 345A, 345B may be collapsible. For example, the lateral stiffener rod may include a first and second section which are releasably and/or shock-cord-coupled to one another (e.g., similar to the lateral support rod 120). Accordingly, the lateral stiffener rod may collapse to a fraction of its maximum length, advantageously allowing it to be stored in the stowage bag along with the rest of the collapsible components of the collapsible chair 300.
The collapsible chair 400 includes a pair of mechanical junctions 430. As shown in the exemplary embodiment of
The mechanical junction 430 includes a locking mechanism 445 that locks the pole 415 into place relative to the mechanical junction 430. In this exemplary embodiment, the locking mechanism 445 is a collar clamp lock. The collar clamp lock 445 provides a clamping force to lockingly clamp the pole 415 to the mechanical junction 430. The locking mechanism 445 may be selectively locked/unlocked by a user to retain or remove the pole 415 from the mechanical junction 430. In some examples, the locking mechanism 445 may be a pin lock (e.g., cotter).
Also depicted in
The mechanical junction 500 includes a locking mechanism 510 that may selectively lock a rod or pole into place relative to the mechanical junction 500. In this exemplary embodiment, the locking mechanism 510 is a collar clamp lock. In some embodiments, the locking mechanism 510 may be a quick-release lock.
The mechanical junction 500 includes a radial slot 515 located proximate to the locking mechanism 510. The radial slot 515 may advantageously facilitate the locking compression of the locking mechanism 510 by allowing a portion of the back top end 505C to bend inward to frictionally engage a rod or pole. The radial slot 515 may help to reduce wear on the back top end 505C.
The mechanical junction 500 includes a hole 525 in the side end 505E. A fastener (e.g., blind rivet) may be inserted into the hole and through an associated hole in an end of the collapsible lateral rod (e.g., 120,
The mechanical junction 500 may optionally include an internal sleeve extending through the front bottom end 505A and back top end 505C. The internal sleeve may, for example, be the internal sleeve located in the bottom left area of page 42 of the drawings of U.S. Provisional Application Ser. No. 62/620,305, titled “Muhl and Capra Chairs,” filed by Robert Graybill, on Jan. 22, 2018, the entire contents of which are incorporated herein by reference. The internal sleeve may enclose a pole. When the locking mechanism 510 is tightened to a locked position, the internal sleeve may compressingly engage the pole to provide added (static) frictional force to retain a pole in a fixed position relative to the mechanical junction 500.
The mechanical junction 500 includes a keyed slot 520 that may complement a key on a pole. The keyed slot 520 may advantageously aid in properly aligning the pole in the front bottom end 505A. The keyed slot 520 may, for example, be used to clock the position of the sleeve adapter (e.g., the internal sleeve mentioned in the previous paragraph). In some embodiments, the keyed slot may be used for various other accessories (e.g., a MUHL-to-CAPRA conversion leg adapter).
In some examples, an exemplary mechanical junction may not have a locking mechanism. For example, the mechanical junction may be the mechanical junction shown in page 38 of the drawings of U.S. Provisional Application Ser. No. 62/620,305. A mechanical junction without a locking mechanism may be used as the mechanical junction 330 shown in
The angles between the different ends of the mechanical junction 500 may be defined as follows: θ1=an angle between the back bottom end 505B and the front top end 505D may be about 135, 140, 145, 150, 155, 160, 165, 170, 175, or about 180 degrees or more; θ2=an angle between the front bottom end 505A and the back top end 505C may be about 135, 145, 155, 165, 175, 177, 179, 180, 181, 183, or about 185 degrees or more; θ3=an angle between the back top end 505C and the side end 505E may be about 70, 80, 85, 87, 89, 90, 91, 93, 95, 100, or about 110 degrees or more.
Although various embodiments have been described with reference to the Figures, other embodiments are possible. For example, the mechanical junction may be formed of a hard and strong material (e.g., steel, aluminum, titanium, injection molded nylons, or composite materials). Various rods may be formed of a lightweight and hard material (e.g., aluminum, titanium, or composite materials). The flexible chair seat may be formed of a cloth or synthetic material (e.g., cotton, nylon, or polyester). In some examples, the flexible chair seat may be formed of a lightweight and strong material (e.g., ripstop nylon fabric, cuben fibers, or polyethylene).
In some examples, the collapsible chair may weight a little as 1 pound (e.g., MUHL chair 100) or 2 pounds (e.g., CAPRA chair 300), which may advantageously allow for high/lightweight portability for a hiking or trekking user. In some examples, the mechanical junctions may function as universal adapters that may couple to a wide variety of (trekking or skiing) poles. In some embodiments, various components may be shock-cord-coupled to one another, which may advantageously prevent some components from being separated (and lost) from other components.
In some examples, various components of collapsible chair may be sold as a kit. For example, the kit may contain the flexible chair seat, the mechanical junctions, the collapsible lateral rod, the back legs, and the front chair support rods, all stored within the stowage bag. The poles may be sold separately. In some examples, the kit may contain the flexible chair seat, the mechanical junctions, the collapsible lateral rod, the back legs, the front legs, the front chair support rods, and the back chair support rods, all stored within the stowage bag. In some examples, a front chair support rod and back chair support rod may be formed of a unitary construction (e.g., a single support rod configured to extend through the mechanical junction).
In various examples, when it is said that a first part (e.g., the back leg 110) is “shock-cord-coupled” to a second part (e.g., mechanical junction 130), it may mean that the first part is coupled to the second part via a shock cord connection. In some embodiments, the collapsible lateral rod may be a telescoping rod that allows for the collapsible lateral rod to collapse to a fraction of its maximum length. In various examples, the collapsible lateral rod may releasingly lock (e.g., via a twist lock) to the mechanical junctions.
In some embodiments, a first mechanical junction (130) may couple a first end of the collapsible lateral rod (120), a first leg (110), and a first chair support member (125) in fixed positions relative to one another. The first mechanical junction may be adapted to releasably couple with a first pole (115). In some examples, a second mechanical junction (130) may couple a second end of the collapsible lateral rod (120), a second leg (110), and a second chair support member (125) in fixed positions relative to one another. The second mechanical junction may be adapted to releasably couple with a second pole (115).
In some examples, the Capra-chair 300 may have features depicted with the Muhl-chair 100 (e.g., locking mechanisms 150). In various examples, the Muhl-chair 100 may have features depicted with the Capra-chair 300 (e.g., top pocket 350, lateral stiffener rod 345A/345B, underquilt 365, back strap 370, under stowage bag 372).
A number of implementations have been described. Nevertheless, it will be understood that various modification may be made. For example, advantageous results may be achieved if the steps of the disclosed techniques were performed in a different sequence, or if components of the disclosed systems were combined in a different manner, or if the components were supplemented with other components. Accordingly, other implementations are within the scope of the following claims.
Claims
1. A collapsible chair (100) comprising:
- a collapsible lateral rod (120) comprising a first end and a second end;
- a first mechanical junction (130) adapted to couple with the first end of the collapsible lateral rod (120), and adapted to releasably couple with a first base support structure component (115) that extends collinearly through the first mechanical junction;
- a second mechanical junction (130) adapted to couple with the second end of the collapsible lateral rod (120), and adapted to releasably couple with a second base support structure component (115) that extends collinearly through the second mechanical junction;
- first and second legs (110, 110) releasably coupled to the first and second mechanical junctions (130, 130), respectively;
- a first and second front chair support members (125, 125) releasably coupled to the first and second mechanical junctions (130, 130), respectively; and,
- a flexible chair seat (135) comprising a front right section, a front left section, a top right section, and a top left section,
- wherein when the first and second base support structure components (115, 115) are respectively coupled with the first and second mechanical junctions (130, 130): the first and second base support structure components (115, 115) function as third and fourth legs, respectively, of the collapsible chair (100), and, the front right section is adapted to releasably couple with the first front chair support member (125) and the front left section is adapted to releasably couple with the second front chair support member (125).
2. The collapsible chair (100) of claim 1, further comprising a flexible chair seat (135), wherein when the collapsible chair (100) is in a deployed state (100E), a user seated in the flexible chair seat (135) creates a load path that applies a coaxial load into the first and second base support structure components (115).
3. The collapsible chair (100) of claim 2, wherein the coaxial load extends collinearly throughout the first and second mechanical junctions (130, 130) and the first and second base support structure components (115, 115).
4. The collapsible chair (100) of claim 3, wherein the load path results in an alignment that reduces a 3-point bending of the first and second base support structure components (115, 115).
5. The collapsible chair (100) of claim 1, the first and second mechanical junctions (130, 130) further comprise respective first and second apertures, such that when the first and second base support structure components (115, 115) are respectively coupled with the first and second mechanical junctions (130, 130), the first base support structure component (115) extends through the first mechanical junction (130) via the first aperture, and the second base support structure component (115) extends through the second mechanical junction (130) via the second aperture.
6. The collapsible chair (100) of claim 1, wherein the collapsible lateral rod (120) further comprises a first rod section releasably coupled to a second rod section.
7. The collapsible chair (100) of claim 1, wherein the first and second ends of the collapsible lateral rod (120) are fixedly coupled to the first and second mechanical junctions (130, 130), respectively.
8. The collapsible chair (100) of claim 1, wherein
- the first leg (110) is shock-cord-coupled to the first mechanical junction (130), the first front chair support member (125) is shock-cord-coupled to the first mechanical junction (130), and the second front chair support member (125) is shock-cord-coupled to the second mechanical junction (130).
9. The collapsible chair (100) of claim 1, wherein when the collapsible chair (100) is in a deployed state (100A) suitable for seating a person:
- the collapsible lateral rod (120) and the first base support structure component (115) define a first angle (θ3) between about 80 and about 100 degrees, and,
- the collapsible lateral rod (120) and the second base support structure component (115) define a second angle (θ3) between about 80 and about 100 degrees.
10. The collapsible chair (100) of claim 1, wherein when the collapsible chair (100) is in a deployed state (100A) suitable for seating a person, a footprint of the first, second, third, and fourth legs (110, 110, 115, 115) define a trapezoidal footprint (700).
11. A collapsible chair (100) comprising:
- a coaxially slidingly assembled collapsible lateral rod (120) comprising a first end and a second end;
- a first mechanical junction (130) adapted to couple with the first end of the collapsible lateral rod (120), and adapted to releasably couple with a first base support structure component (115);
- a second mechanical junction (130) adapted to couple with the second end of the collapsible lateral rod (120), and adapted to releasably couple with a second base support structure component (115);
- first and second legs (110, 110) releasably coupled to the first and second mechanical junctions (130, 130), respectively;
- a first and second front chair support members (125, 125) releasably coupled to the first and second mechanical junctions (130, 130), respectively; and,
- a flexible seat (135) comprising a front right section and a front left section,
- wherein when the first and second base support structure components (115, 115) are respectively coupled with the first and second mechanical junctions (130, 130): the first and second base support structure components (115, 115) function as third and fourth legs, respectively, of the collapsible chair (100), and, the front right section is adapted to releasably couple with the first front chair support member (125) and the front left section is adapted to releasably couple with the second front chair support member (125).
12. The collapsible chair (100) of claim 11, further comprising a flexible seat (135), wherein when the collapsible chair (100) is in a deployed state (100E), a user seated in the flexible seat (135) creates a load path that applies a coaxial load into the first and second base support structure components (115).
13. The collapsible chair (100) of claim 12, wherein the coaxial load extends collinearly throughout the first and second mechanical junctions (130, 130) and the first and second base support structure components (115, 115).
14. The collapsible chair (100) of claim 11, wherein the load path results in an alignment that reduces a 3-point bending of the first and second base support structure components (115, 115).
15. The collapsible chair (100) of claim 11, wherein when collapsible chair (100) is in a deployed state (100A) suitable for seating a person:
- the first leg (110) and the first front chair support member (125) define a first angle (θ1) between about 135 and about 180 degrees, and,
- the second leg (110) and the second front chair support member (125) define a second angle (θ1) between about 135 and about 180 degrees.
16. The collapsible chair (100) of claim 11, wherein when the collapsible chair (100) is in a deployed state (100A) suitable for seating a person:
- the collapsible lateral rod (120) and the first base support structure component (115) define a first angle (θ3) between about 80 and about 100 degrees, and,
- the collapsible lateral rod (120) and the second base support structure component (115) define a second angle (θ3) between about 80 and about 100 degrees.
17. A collapsible chair (100) comprising:
- a collapsible lateral rod (120) comprising a first end and a second end;
- first and second legs (110, 110);
- a first and second front chair support members (125, 125);
- a flexible chair seat (135) comprising a front right section, a front left section, a top right section, and a top left section; and,
- a first means for coupling the first end of the collapsible lateral rod (120), the first leg (110), and the first chair support member (125) in fixed positions relative to one another, the first means for coupling adapted to releasably couple with a third leg (115) of the collapsible chair and include a load path that resists an axial compression of the third leg;
- a second means for coupling the second end of the collapsible lateral rod (120), the second leg (110), and the second chair support member (125) in fixed positions relative to one another, the second means for coupling adapted to releasably couple with a fourth leg (115) of the collapsible chair and include a load path that resists an axial compression of the fourth leg;
- wherein the third and fourth legs (115, 115) are respectively coupled with the first and second means for coupling and extend collinearly therethrough, the front right section is adapted to releasably couple with the first front chair support member (125) and the front left section is adapted to releasably couple with the second front chair support member (125).
18. The collapsible chair (100) of claim 17, wherein the first leg (110) is shock-cord-coupled to the first means for coupling, the second leg (110) is shock-cord-coupled to the second means for coupling, the first front chair support member (125) is shock-cord-coupled to the first means for coupling, and the second front chair support member (125) is shock-cord-coupled to the second means for coupling.
19. The collapsible chair (100) of claim 17, wherein when the collapsible chair (100) is in a deployed state (100A) suitable for seating a person:
- the first leg (110) and the first front chair support member (125) define a first angle (θ1) between about 135 and about 180 degrees, and,
- the second leg (110) and the second front chair support member (125) define a second angle (θ1) between about 135 and about 180 degrees.
20. The collapsible chair (100) of claim 17, wherein when the collapsible chair (100) is in a deployed state (100A) suitable for seating a person:
- the collapsible lateral rod (120) and the third leg (115) define a first angle (θ3) between about 80 and about 100 degrees, and,
- the collapsible lateral rod (120) and the fourth leg (115) define a second angle (θ3) between about 80 and about 100 degrees.
21. A collapsible chair comprising:
- a flexible seat comprising a front section and a back section; and,
- at least one hub configured to mechanically and removably couple to a plurality of chair support members comprising at least a portion of a trekking pole, wherein the trekking pole comprises a handle, a tip, and a plurality of axially collapsible portions, the at least one hub configured such that:
- when the plurality of chair support members are mechanically and removably coupled to the at least one hub, including to an end of the at least a portion of the trekking pole,
- when a first at least one of the plurality of chair support members is releasably coupled to the front section, and
- when a second at least one of the plurality of chair support members is releasably coupled to the back section,
- then the flexible seat is supported, in a deployed state for seating a person, by the at least one hub and the plurality of chair support members.
22. The collapsible chair of claim 21, wherein at least the portion of the trekking pole comprises a handle of the trekking pole.
23. The collapsible chair of claim 21, wherein an entirety of the trekking pole is used to support the flexible seat.
24. The collapsible chair of claim 21, wherein the at least one hub comprises a first hub and a second hub and, in a deployed mode, the first hub is coupled to a first end of a lateral support member and the second hub is coupled to a second end of the lateral support member.
25. The collapsible chair of claim 21, wherein the at least one hub is further configured to couple to a plurality of legs in the deployed state.
26. A collapsible chair comprising:
- a frame comprising a first chair support member and a second chair support member, each having a first end and a second end;
- a lateral stiffener rod having a first end and a second end; and,
- a flexible seat having a front portion and a back portion comprising a first pocket configured to receive the lateral stiffener rod, wherein the back portion is configured to releasably couple to the first end of the first chair support member and of the second chair support member,
- wherein, in a deployed mode, the lateral stiffener rod is releasably and entirely disposed in the first pocket and extends laterally across a top of the flexible seat such that the first end of the lateral stiffener rod is positioned above the first end of the first chair support member and the second end of the lateral stiffener rod is positioned above the first end of the second chair support member.
27. The collapsible chair of claim 26, further comprising:
- a first mechanical joint coupled to the first chair support member; and,
- a second mechanical joint coupled to the second chair support member.
28. The collapsible chair of claim 26, wherein at least one of the first chair support member and the second chair support member comprises at least a first segment of a trekking pole.
29. The collapsible chair of claim 26, wherein the first pocket comprises:
- an aperture configured such that the lateral stiffener rod may be selectively disposed in the first pocket; and,
- a first seam defining a capture pocket at an end of the first pocket such that, when the lateral stiffener rod is disposed in the first pocket through the aperture and the first end of the lateral stiffener rod is operated into the capture pocket, then the lateral stiffener rod is retained in the first pocket at least by the first seam.
30. A portable chair comprising:
- a frame comprising a plurality of chair support members; and,
- a flexible seat comprising: a front portion and a back portion; a first side cutout area and a second side cutout area at least partially defining: a seat portion extending from the front portion to the back portion; a first side panel extending from the front portion to the back portion and to a first upper side of the seat portion; and, a second side panel extending from the front portion to the back portion and to a second upper side of the seat portion opposite the first upper side; and,
- a lower portion of the seat portion, the lower portion being free of attachment to the first side panel and the second side panel such that each cutout area comprises an aperture bounded by the corresponding side panel and the lower portion,
- wherein, in a deployed mode, the plurality of chair support members are coupled to the front portion and the back portion of the flexible seat such that the seat portion, the first side panel, and the second side panel cooperate to support a person sitting in the seat portion such that, in response to a force applied by the person sitting in the seat portion: the lower portion of the seat portion conforms to a hip region of the person separately from the first side panel and the second side panel, and the first side panel and the second side panel cooperate with the seat portion to support a lumbar region of the person.
31. The portable chair of claim 30, the frame comprising a collapsible frame.
32. The collapsible chair of claim 21, wherein, when the flexible seat is supported in the deployed state, the flexible seat is removably coupled to the plurality of chair support members.
33. The collapsible chair of claim 32, wherein, in the deployed state, the at least a portion of the trekking pole extends from the at least one hub to the flexible seat.
34. The collapsible chair of claim 21, wherein, in the deployed state, the plurality of chair support members are removably coupled to the at least one hub.
35. The collapsible chair of claim 21, wherein the axially collapsible portions of the trekking pole are separable.
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Type: Grant
Filed: Jan 14, 2022
Date of Patent: Jan 14, 2025
Assignee: Crow Hill LLC (Mount Pleasant, SC)
Inventor: Robert Steven Graybill (Mount Pleasant, SC)
Primary Examiner: Sarah B McPartlin
Application Number: 17/576,476
International Classification: A47C 4/28 (20060101); A47C 4/02 (20060101); A47C 13/00 (20060101);