Collapsible chair with collapsible back support
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A47C-004/28
A47C-007/46
A47C-004/44
출원번호
US-0962242
(2013-08-08)
등록번호
US-9622582
(2017-04-18)
발명자
/ 주소
Lougee, Laurence
출원인 / 주소
Strongback, LLC
대리인 / 주소
Dingman, Brian M.
인용정보
피인용 횟수 :
1인용 특허 :
18
초록▼
A collapsible chair includes a collapsible seat having a front portion and an opposing rear portion and a collapsible back. The collapsible back includes a first back support member and a second back support member. Each of the first back support member and the second back support member includes an
A collapsible chair includes a collapsible seat having a front portion and an opposing rear portion and a collapsible back. The collapsible back includes a first back support member and a second back support member. Each of the first back support member and the second back support member includes an arcuate portion extending toward the front portion of the collapsible seat. A back membrane is coupled to the back support members and spans a distance between the back support members.
대표청구항▼
1. A collapsible chair that is movable between a deployed configuration and a collapsed configuration, comprising: a collapsible seat, the seat comprising a seat membrane, a front portion, and an opposing rear portion;a collapsible back comprising a first back support member, a second back support m
1. A collapsible chair that is movable between a deployed configuration and a collapsed configuration, comprising: a collapsible seat, the seat comprising a seat membrane, a front portion, and an opposing rear portion;a collapsible back comprising a first back support member, a second back support member, and a back membrane coupled to the first and second back support members and spanning a distance between the first and second back support members; andat least two pivotally connected members that brace the back;wherein the first and second back support members each has a substantially linear upper portion that transitions into an arcuate lower portion, each lower portion defining a convex curve;wherein the arcuate lower portions each extending convexly toward the front portion of the chair;wherein, when the chair is in the deployed configuration, the at least two pivotally connected members are constructed and arranged to brace the back so that when the chair is in the deployed configuration, the back membrane is generally evenly taut and generally follows the contour of the back support members, to form a convexly-curved lower lumbar support region;wherein the seat is constructed and arranged such that the seat membrane collapses and folds in the collapsed configuration, andwherein the back is constructed and arranged such that the back support members are adapted to be moved together wherein the back membrane collapses and folds in the collapsed configuration. 2. The collapsible chair of claim 1 wherein the seat membrane is angled slightly backwardly in the deployed configuration. 3. The collapsible chair of claim 1 further comprising a coupling member that is constructed and arranged to slide along a pivotally connected member and each arcuate portion is attached to a coupling member. 4. The collapsible chair of claim 1 wherein each arcuate portion is positioned outside of and in contact with a pivotally connected member. 5. The collapsible chair of claim 1 wherein each arcuate portion defines an apex that is positioned greater than four inches above a lowest portion of the seat membrane. 6. The collapsible chair of claim 1 wherein a pivotally connected member is positioned at a front portion of the chair to support armrests. 7. The collapsible chair of claim 1 wherein each back support member is positioned outside of and against a pivotally connected member bracing the back support members to keep them from turning or twisting inward. 8. The collapsible chair of claim 1 further comprising a plurality of legs that support the seat wherein each of the back support members is coupled to each leg at two locations, one location proximate a top of each leg and the other location either between the seat and a bottom of each leg or just above the seat. 9. The collapsible chair of claim 8 wherein the collapsible back is operatively coupled to the collapsible seat such that the two can pivot from the deployed configuration to the collapsed configuration, in which the collapsible back and the collapsible seat collapse and fold. 10. The collapsible chair of claim 9 wherein the back membrane slides up the back support members when the chair is in the collapsed configuration and wherein the back membrane is attached to the collapsible seat, so that when the chair is in the deployed configuration the back membrane is connected in at least one location at a top of the back support members so that the back membrane is prevented from being pulled too low. 11. The collapsible chair of claim 10 further comprising a plurality of spaced seat support members wherein the seat membrane is coupled to the seat support members and spanning a distance between the seat support members. 12. The collapsible chair of claim 1 further comprising a first back member and a second back member, each of the first back member and the second back member comprising a back member upper portion, the first back support member coupled to the first back member upper portion and the second back support member coupled to the second back member upper portion. 13. The collapsible chair of claim 12 further comprising a first front leg, a second front leg, a first rear leg, and a second rear leg, the collapsible back coupled to an upward extension of the first and second front legs. 14. The collapsible chair of claim 13 wherein each arcuate portion comprises an apex positioned greater than about four inches above a lowest portion of the seat membrane directly below the apex, when the chair is in the deployed configuration. 15. The collapsible chair of claim 14 wherein the back membrane is sized and coupled to the back support members in such a way that when the chair is in the deployed position the back support members pull evenly on the back membrane at a plurality of locations along a length of the back support members, to keep the back membrane generally evenly taut. 16. The collapsible chair of claim 15 wherein the back membrane is inhibited from sliding along a vertical length of the back support members by being connected to them in at least one location. 17. The collapsible chair of claim 14 wherein a line extending along each back support member upper portion is angled backward more than ten degrees from the vertical. 18. A collapsible chair that is movable between a deployed configuration and a collapsed configuration, comprising: a collapsible seat, the seat comprising a seat membrane, a front portion, and an opposing rear portion;a collapsible back comprising a first back support member, a second back support member, and a back membrane coupled to the first and second back support members and spanning a distance between the first and second back support members; andat least two pivotally connected members that brace the back;wherein the first and second back support members each has an arcuate portion defining a convex curve;wherein each arcuate portion extends convexly toward the front portion of the chair;wherein, when the chair is in the deployed configuration, the at least two pivotally connected members are constructed and arranged to brace the back so that when the chair is in the deployed configuration, the back membrane is generally evenly taut and generally follows the contour of the back support members, to form a convexly-curved lower lumbar support region;wherein the seat is constructed and arranged such that the seat membrane collapses and folds in the collapsed configuration, andwherein the back is constructed and arranged such that the back support members are adapted to be moved together wherein the back membrane collapses and folds in the collapsed configuration.
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이 특허에 인용된 특허 (18)
Harris Godfrey (Littleton CO) Hydle Leslie K. (Arvada CO), Adjustable lumbar back support system for a wheelchair.
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