Foldable dual-chair

• US 6,231,119 B1
• Filed: 09/15/2000
• Issued: 05/15/2001
• Est. Priority Date: 09/15/2000
• Status: Expired due to Term

• Current Assignee: IP Power Holdings Limited
• Original Assignee: Tofasco of America
• Inventors: Zheng, Edward
• Primary Examiner(s): Brown, Peter R.
• Application Number:
  US09/662,956
• Time in Patent Office: 242 Days
• Field of Search: 297/16.1, 297/16.2, 297/45, 297/232
• US Class Current: 297/16.2
• CPC Class Codes: A47C 4/286 foldable side to side and front to back, e.g. umbrella type

Abstract

A foldable dual-chair includes a pair of seat frames and a pair of back frame constructed to support a pair of fabric seats thereon respectively wherein a connecting frame is foldably supported between the two seat frames. The connecting frame includes a pair connecting leg posts each having an outer tube frame and an inner tube frame upwardly extended therefrom in a vertical movable manner. So, the connecting leg posts are capably of slidably adjusting their height in such a manner the foldable dual-chair is capable of folding up into a compact unit for easy storage and carriage.

Claims

1. A foldable dual-chair, comprising:

a pair of seat frames and a pair of back frame constructed to support a pair of fabric seats thereon respectively wherein each seat frame comprises an inter-side frame leg, an outer-side frame leg, and a construction frame leg foldably supported between the inter-side frame leg and the outer-side frame leg, each of said inter-side and outer-side frame legs comprising a front side crossed leg and a rear side crossed leg pivotally connected together where they cross, a front upper inter-frame joint pivotally connected to a top end of said rear side crossed leg, and a front base inter-frame joint pivotally connected to a lower end of said front side crossed leg, and

a connecting frame, foldably supported between said two inter-side frame legs of said pair of seat frame, comprising a pair of connecting leg posts slidably passing through said two front upper inter-frame joints of said two inter-side frame legs respectively, each said connecting leg post comprising an outer tube frame having a lower end connected to said front base inter-frame joint and an inner tube frame coaxially and upwardly extended from said outer tube frame in a slidably movable manner and penetrating through said respective front upper inter-frame joint.

2. A foldable dual-chair, as recited in claim 1, wherein said connecting frame further comprises two pairs of connecting crossed legs foldably supported between the two seat frames wherein each pair of connecting crossed legs pivotally connected with each other to form a “

X”

structure.

3. A foldable dual-chair, as recited in claim 2, wherein said connecting frame further comprises a stopper affixed on a top end of each said inner tube frame of said connecting leg post, which is positioned on top of said respective front upper inter-frame joint, for ensuring said respective front upper inter-frame joint slid along said inner tube frame in a folding process.

4. A foldable dual-chair, as recited in claim 3, wherein said outer tube frame of said connecting leg post has a diameter larger than a diameter of said inner tube frame thereof such that said inner tube frame is slidably disposed in said outer tube frame in a vertical movable manner.

5. A foldable dual-chair, as recited in claim 4, wherein said two pairs of connecting crossed legs comprises a lower pair of connecting crossed legs having two bottom ends pivotally connected to said two front base inter-frame joints respectively and an upper pair of connecting crossed legs having two top ends pivotally connected to said two front upper inter-frame joints respectively, wherein said upper and lower pairs of connecting crossed legs are pivotally connected together by a pair of sliding joints which are slidably connected with said connecting leg posts respectively.

6. A foldable dual-chair, as recited in claim 5, wherein each said sliding joint comprises a slider body having a slider hole which has a diameter slightly larger than said respective connecting leg post and vertically extended through said slider body for said respective connecting leg post slidably passing through, and a pivotal arm integrally extended from said slider body for pivotally connecting both said upper and lower connecting crossed legs together.

7. A foldable dual-chair, as recited in claim 6, wherein said each of said front upper inter-frame joint has a guiding through hole having a diameter slightly smaller than said respective outer tube frame of said connecting leg post for said inner tube frame of said connecting leg post slidably passing through.

8. A foldable dual-chair, as recited in claim 6, wherein said connecting frame further comprises an upper pair of additional connecting crossed legs and a lower pair of additional connecting crossed legs, each of which are pivotally connected each other to form a “

X”

structure, wherein said upper pair of additional connecting crossed legs having two top ends pivotally connected to two rear upper frame joints respectively and said lower pair of additional connecting crossed legs having two bottom ends pivotally connected to two rear frame joints respectively, and wherein said upper and lower pairs of additional connecting crossed legs are pivotally connected together by two said sliding joints which are slidably connected with said back frame legs of said back frames respectively.

9. A foldable dual-chair, as recited in claim 5, wherein said each of said front upper inter-frame joint has a guiding through hole having a diameter slightly smaller than said respective outer tube frame of said connecting leg post for said inner tube frame of said connecting leg post slidably passing through.

10. A foldable dual-chair, as recited in claim 5, wherein said connecting frame further comprises an upper pair of additional connecting crossed legs and a lower pair of additional connecting crossed legs, each of which are pivotally connected each other to form a “

X”

structure, wherein said upper pair of additional connecting crossed legs having two top ends pivotally connected to two rear upper frame joints respectively and said lower pair of additional connecting crossed legs having two bottom ends pivotally connected to two rear frame joints respectively, and wherein said upper and lower pairs of additional connecting crossed legs are pivotally connected together by two said sliding joints which are slidably connected with said back frame legs of said back frames respectively.

11. A foldable dual-chair, as recited in claim 5, further comprises a fabric flap having a predetermined shape and size foldably supported between said two seat frames wherein a rear end of said fabric flap is slidably connected to said back frames and a front end of said fabric flap is affixed to said two stoppers of said connecting leg posts in such a manner said fabric flap is adapted to be horizontally and flatly stretched out when said foldable dual-chair in an unfolded state such that said fabric flap is capable of forming an arm rest between said two seat frames, so as to support users'"'"' arms while sitting on said foldable dual-chair.

12. A foldable dual-chair, as recited in claim 5, further comprises a fabric flap having a predetermined shape and size foldably supported between said two seat frames wherein a rear end of said fabric flap is slidably connected to said back frames and a front end of said fabric flap is affixed to said two stoppers of said connecting leg posts in such a manner said fabric flap is adapted to be horizontally and flatly stretched out when said foldable dual-chair in an unfolded state such that said fabric flap is capable of forming an arm rest between said two seat frames, so as to support users'"'"' arms while sitting on said foldable dual-chair.

13. A foldable dual-chair, as recited in claim 4, wherein said each of said front upper inter-frame joint has a guiding through hole having a diameter slightly smaller than said respective outer tube frame of said connecting leg post for said inner tube frame of said connecting leg post slidably passing through.

14. A foldable dual-chair, as recited in claim 3, wherein said two pairs of connecting crossed legs comprises a lower pair of connecting crossed legs having two bottom ends pivotally connected to said two front base inter-frame joints respectively and an upper pair of connecting crossed legs having two top ends pivotally connected to said two front upper inter-frame joints respectively, wherein said upper and lower pairs of connecting crossed legs are pivotally connected together by a pair of sliding joints which are slidably connected with said connecting leg posts respectively.

15. A foldable dual-chair, as recited in claim 14, wherein each said sliding joint comprises a slider body having a slider hole which has a diameter slightly larger than said respective connecting leg post and vertically extended through said slider body for said respective connecting leg post slidably passing through, and a pivotal arm integrally extended from said slider body for pivotally connecting both said upper and lower connecting crossed legs together.

16. A foldable dual-chair, as recited in claim 2, wherein said outer tube frame of said connecting leg post has a diameter larger than a diameter of said inner tube frame thereof such that said inner tube frame is slidably disposed in said outer tube frame in a vertical movable manner.

17. A foldable dual-chair, as recited in claim 2, wherein said two pairs of connecting crossed legs comprises a lower pair of connecting crossed legs having two bottom ends pivotally connected to said two front base inter-frame joints respectively and an upper pair of connecting crossed legs having two top ends pivotally connected to said two front upper inter-frame joints respectively, wherein said upper and lower pairs of connecting crossed legs are pivotally connected together by a pair of sliding joints which are slidably connected with- said connecting leg posts respectively.

18. A foldable dual-chair, as recited in claim 17, wherein each said sliding joint comprises a slider body having a slider hole which has a diameter slightly larger than said respective connecting leg post and vertically extended through said slider body for said respective connecting leg post slidably passing through, and a pivotal arm integrally extended from said slider body for pivotally connecting both said upper and lower connecting crossed legs together.

19. A foldable dual-chair, as recited in claim 1, wherein said connecting frame further comprises a stopper affixed on a top end of each said inner tube frame of said connecting leg post, which is positioned on top of said respective front upper inter-frame joint, for ensuring said respective front upper inter-frame joint slid along said inner tube frame in a folding process.