Patent US1367739A successfully refreshed from Google Patents.
Patent US5435620A successfully refreshed from Google Patents.
US5435620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Foldable chair
Assignee: Individual
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Filing: 1994-05-17
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Granted: 1995-07-25
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Expires: 2014-05-17
Abstract
Abstract A chair includes a seat frame and a base frame each having a pair of rods coupled to a support frame by four couplers. Each of the couplers has a groove for engaging with the rods of the seat frame and the base frame. The seat frame and the base frame can be supported in parallel with each other when the rods are engaged in the grooves of the couplers. The seat frame and the base frame can be rotated to contact with the support frame when the rods are disengaged from the grooves of the couplers, so as to form a compact configuration.
Inventors
- 👤 Kuen-Pao Cheng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:35
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/04; A47C4/18; A47C4/20; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32114; Y10T403/32131; Y10T403/32147; Y10T403/32155
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
144 words
A chair comprising a seat frame including a pair of first rods having rear ends; a base frame including a pair of second rods having front ends; a support frame including a pair of posts having upper ends and lower ends; and four couplers fixed to said upper ends and said lower ends of Said posts, each of said couplers including a groove formed therein, said rear ends of said first rods and said front ends of said second rods being pivotally coupled to said couplers at one end of said grooves; said seat frame and said base frame being supported in parallel with each other when said rods are engaged in said grooves of said couplers, and said seat frame and said base frame being rotated to contact with said support frame when said rods are disengaged from said grooves of said couplers.
Claim 2
Dependent Claim
144 words
A chair comprising a seat frame including a pair of first rods having rear ends; a base frame including a pair of second rods having front ends; a support frame including a pair of posts having upper ends and lower ends; and four couplers fixed to said upper ends and said lower ends of Said posts, each of said couplers including a groove formed therein, said rear ends of said first rods and said front ends of said second rods being pivotally coupled to said couplers at one end of said grooves; said seat frame and said base frame being supported in parallel with each other when said rods are engaged in said grooves of said couplers, and said seat frame and said base frame being rotated to contact with said support frame when said rods are disengaged from said grooves of said couplers.
Claim 3
Dependent Claim
69 words
A chair according to claim 1, wherein said rear ends of said first rods each includes a bracket secured thereto, said chair further comprises a back frame including a pair of bars having lower ends pivotally coupled to said brackets, said back frame is supported in perpendicular to said seat frame for forming a back support of said chair and folded to contact with said support frame when folded.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-07-24 | 1999-01-23 | 1999-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-07-24 | 2003-01-23 | 2003-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-07-24 | 2007-01-23 | 2007-07-25 | $7700.00 | Window Closed / Lapsed |