Combination foldable chair and rolling transport
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
A47C-007/62
A47C-013/00
A47C-004/00
B62B-001/04
출원번호
US-0292831
(2011-11-09)
등록번호
US-8777306
(2014-07-15)
발명자
/ 주소
Rahm, Brenda D.
출원인 / 주소
Rahm, Brenda D.
대리인 / 주소
Lathrop & Gage LLP
인용정보
피인용 횟수 :
0인용 특허 :
29
초록▼
A foldable chair, operable between a seating configuration and a rolling transport configuration, the foldable chair comprising a plurality of legs with a roller secured to the distal end of each leg and the proximal end of each leg secured to a column base. Extending from the column base is a colum
A foldable chair, operable between a seating configuration and a rolling transport configuration, the foldable chair comprising a plurality of legs with a roller secured to the distal end of each leg and the proximal end of each leg secured to a column base. Extending from the column base is a column with a first and second end, the column first end secured to the column base and the second end of the column secured to a first platform or seat cushion. A second platform extends downwardly from the first platform for attaching a carrying case. Also included is a backrest rotatably secured to the first platform such that when the backrest is perpendicular to the first platform two roller elements are fully shrouded. When the backrest is rotated 90 degrees and disposed substantially parallel to the seat cushion the roller elements are exposed for rolling contact with the ground surface.
대표청구항▼
1. A foldable chair, operable between a seating configuration and a rolling transport configuration, the foldable chair comprising: a plurality of legs each comprising a proximal and a distal end, a rolling element secured to the distal end of each leg and the proximal end of each leg secured to a c
1. A foldable chair, operable between a seating configuration and a rolling transport configuration, the foldable chair comprising: a plurality of legs each comprising a proximal and a distal end, a rolling element secured to the distal end of each leg and the proximal end of each leg secured to a column base;a column with a first and second end, the column first end secured to the column base;a first platform, the second end of the column secured to the first platform, the first platform housing at least one telescoping shaft for use as a handle when the foldable chair is in the rolling transport configuration;a second platform secured to and disposed beneath the first platform for releasably attaching a carrying case for item storage during rolling transport;a backrest with a first and second edge and a front side and a back side, the backrest rotatably secured to the first platform such that when the backrest is substantially perpendicular to the first platform at least two wheel elements oppositely disposed and adjacent the first and second backrest edges are shrouded and when the backrest is rotated approximately 90 degrees and disposed substantially parallel to the first platform the wheel elements are exposed for contact with the ground surface. 2. The foldable chair of claim 1, wherein the first platform is adjustable in height by adjusting column height. 3. The foldable chair of claim 2, wherein the first platform height is adjustable by the user repositioning a lever in operable communication with a lifting mechanism disposed within the column. 4. The foldable chair of claim 1, wherein the plurality of legs are comprised of a range of legs between 3 and 6. 5. The foldable chair of claim 1, wherein the proximal end of at least one leg is pivotally secured to the column base. 6. The foldable chair of claim 1, wherein the proximal end of at least one leg is non-pivotally secured to the column base. 7. The foldable chair of claim 1, wherein when extended, the at least one telescoping shaft housed in the first platform is adapted to allow the user to rotate the foldable chair in the rolling transport configuration. 8. The foldable chair of claim 1, wherein when in the seating configuration the first platform serves as a seat cushion for the user. 9. The foldable chair of claim 1, wherein when in the seating configuration the second platform serves as a footrest for the user. 10. The foldable chair of claim 1, wherein the second platform is suspended beneath the first platform by at least one support rod. 11. The foldable chair of claim 1, wherein when in the rolling transport configuration the carrying case is secured to the second platform and is disposed atop the column and the at least one support rod. 12. The foldable chair of claim 1, wherein the roller element shroud rotates out of position exposing the roller element when the backrest is lowered into position atop the first platform. 13. The foldable chair of claim 1, wherein at least one low friction strip is removably securable to the backside of the backrest, the at least one low friction strip extending longitudinally along the backside of the backrest. 14. A foldable chair, operable between a seating position and a rolling transport position, the foldable chair comprising: a plurality of legs each comprising a proximal and a distal end, a roller element secured to the distal end of each leg and the proximal end of each leg secured to a column base;a column with a first and second end, the column first end secured to the column base;a first platform, the second end of the column secured to the first platform, the first platform housing at least one telescoping shaft for use as a handle when the foldable chair is in the rolling transport configuration;a second platform secured to and disposed beneath the first platform for releasably securing a carrying case for item storage and rolling transport;a backrest with a first and second edge, the backrest rotatably secured to the first platform such that when the backrest is substantially perpendicular to the first platform at least two wheel elements oppositely disposed and adjacent the first and second backrest edges are fully shrouded and when the backrest is disposed substantially parallel to the first platform the shroud retracts and the wheel elements are exposed and available for contact with the ground surface;when the foldable chair is in a seating configuration the roller elements secured to the distal end of the plurality of legs are in contact with the ground surface, the first platform and the backrest are disposed at substantially a 90 degree angle to one another and the first platform is available as a seat by the user;when in a rolling transport configuration the backrest and first platform are substantially parallel and the foldable chair is rotated approximately 90 degrees such that the distal end of at least one leg remains in contact with the ground surface and the unshrouded wheel elements contact the ground surface, the carrying case is releasably secured to the second platform and is supported by the column. 15. The foldable chair of claim 14, wherein the first platform is adjustable in height by user manipulation of a column lever that is in operable communication with a lifting mechanism internal to the column. 16. The foldable chair of claim 14, wherein the plurality of legs are comprised of a range of legs between 3 and 5. 17. The foldable chair of claim 14, wherein the proximal end of at least one leg is pivotally secured to the column base. 18. The foldable chair of claim 14, wherein the proximal end of at least one leg is non-pivotally secured to the column base. 19. The foldable chair of claim 14, wherein when extended, the at least one telescoping shaft housed in the first platform is adapted to allow the user to rotate the foldable chair in the rolling transport configuration 20. The foldable chair of claim 14, wherein when in the seating configuration the first platform serves as a seat cushion for the user. 21. The foldable chair of claim 14, wherein when in the seating configuration the second platform serves as a footrest for the user. 22. The foldable chair of claim 14, wherein when in the rolling transport configuration the carrying case is secured to the second platform and is positioned atop the column. 23. The foldable chair of claim 14, wherein the wheel element shroud rotates out of position when the backrest is lowered into position atop the first platform. 24. An apparatus convertible between a seating device and a rolling transport, the apparatus comprising; (A) when deployed as a seating device; (i) a plurality of legs each comprising a proximal and a distal end, a roller element secured to the distal end of each leg and the proximal end of each leg secured to a column base;(ii) a column with a first and second end, the column first end secured to the column base;(iii) a first platform with an upper side and an lower side, a lower side center mount, at least one telescoping shaft housed within the first platform, the column second end secured to the first platform underside center mount;(iv) a second platform with a base, the second platform downwardly extending from the first platform lower side; and(v) a backrest with first and second oppositely disposed side edges, the backrest rotatably secured to the first platform wherein when the backrest is substantially perpendicularly disposed to the first platform at least two oppositely disposed wheels adjacent the first and second backrest edges are each fully covered by shroud elements;(B) when deployed as a rolling transport apparatus; (i) the backrest is rotated to a position that is substantially parallel to the first platform wherein the shroud elements are rotated out of position and expose the at least two oppositely disposed wheels such that upon contact with the ground surface the wheels may freely rotate;(ii) the entire apparatus is rotated approximately 90 degrees bringing the at least two oppositely disposed wheels into contact with the ground surface and the distal end of at least one of the plurality of legs remains in contact with the ground surface while the distal end of the remaining plurality of legs are elevated above the ground surface;(iii) a carrying case is releasably secured to the second platform;(iv) the telescoping shaft is extracted from the first platform and the telescoping shaft is available during rolling transport to rotate the entire apparatus upon the two unshrouded oppositely disposed wheels; and(v) the plurality of legs elevated above the ground surface are pivotally rotated downward at the column base to reduce the space required for storage and transport of the apparatus. 25. The foldable chair of claim 24, wherein the first platform is adjustable in height by adjusting the column height. 26. The foldable chair of claim 25, wherein the first platform height is adjustable by the user manipulating a lever in operable communication with a lifting mechanism disposed within the column. 27. The foldable chair of claim 24, wherein the plurality of legs are comprised of a range of legs between 3 and 6. 28. The foldable chair of claim 24, wherein the proximal end of at least one leg is pivotally secured to the column base. 29. The foldable chair of claim 24, wherein the proximal end of at least one leg is non-pivotally secured to the column base. 30. The foldable chair of claim 24, wherein when extended, the at least one telescoping shaft housed in the first platform is adapted to allow the user to rotate the foldable chair in the rolling transport configuration 31. The foldable chair of claim 24, wherein when in the seating configuration the first platform serves as a seat cushion for the user. 32. The foldable chair of claim 24, wherein when in the seating configuration the second platform serves as a footrest for the user. 33. The foldable chair of claim 24, wherein when in the rolling transport configuration the carrying case is secured to the second platform and is disposed atop the column. 34. The foldable chair of claim 24, wherein the wheel shroud rotates out of position, exposing the wheels, when the backrest is lowered into position atop the first platform.
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