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US4216995A Expired / Lapsed US ⏱️ 0.0 years remaining

Collapsible chair

Assignee: Shinsei Kinzoku Seisakusho KK
•
Filing: 1979-03-05
•
Granted: 1980-08-12
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Expires: 1999-03-05
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Abstract

Abstract A collapsible chair including a seat, an applied plate, a back support and a seat support. The seat includes a pair of separated stoppers provided on the front bottom surface of the seat, a pair of first fixing frames corresponding with and adjacent to the stoppers, a hole having a notch therein formed in the first frames, a pair of second fixing frames provided on the rear bottom surface of the seat and corresponding with the first fixing frames and holes having a notch therein provided in the second frames. The applied plate fits on the bottom surface of the seat between the first and second fixing frames and includes curved edges for engaging with a pipe and a joining part provided in the center of the applied plate for engaging with the seat support. The back support is coupled to the seat by a pair of curved pipes which are coupled to the back support at one end and whose other end extends through the holes in the first and second fixing frames and the curved edges of the applied plate. A projection is provided on the end of the pipe and the projection fits through the notches in the holes and is for locking the pipes to the seat.

Inventors

  • 👤 Yoshisada Inaba

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 18:37
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/02

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 206 words
A collapsible chair comprising: a seat, said seat comprising: a pair of stops provided on a front bottom surface of said seat; a pair of first brackets provided on said bottom surface of said seat and corresponding with and adjacent to said stops; a hole formed in each of said first brackets; a pair of second brackets provided on a rear bottom surface of said seat and corresponding with said first brackets; and a hole formed in each of said second brackets; a plate detachably fixed to said bottom surface of said seat between said first and second brackets, said plate comprising: curved edges for engaing with a pipe; and a seat coupling provided on a bottom surface of said plate; a back rest, said back rest being coupled to said seat by a pair of curved pipes which are coupled to said back rest at one end and whose other end extends through said holes in said first and second brackets, engages with said curved edges of said plate and abuts said stops; and a seat support post, said seat support post engaging with said seat coupling; whereby said seat, plate, back rest and seat support post are detachably coupled together to form a chair.
Claim 2
Dependent Claim 206 words
A collapsible chair comprising: a seat, said seat comprising: a pair of stops provided on a front bottom surface of said seat; a pair of first brackets provided on said bottom surface of said seat and corresponding with and adjacent to said stops; a hole formed in each of said first brackets; a pair of second brackets provided on a rear bottom surface of said seat and corresponding with said first brackets; and a hole formed in each of said second brackets; a plate detachably fixed to said bottom surface of said seat between said first and second brackets, said plate comprising: curved edges for engaing with a pipe; and a seat coupling provided on a bottom surface of said plate; a back rest, said back rest being coupled to said seat by a pair of curved pipes which are coupled to said back rest at one end and whose other end extends through said holes in said first and second brackets, engages with said curved edges of said plate and abuts said stops; and a seat support post, said seat support post engaging with said seat coupling; whereby said seat, plate, back rest and seat support post are detachably coupled together to form a chair.
Claim 3
Dependent Claim 67 words
A collapsible chair according to claim 1 wherein said holes in said first and second brackets are provided with notches and said pipes are provided with a projection at one end which fits through said notches of said holes in said first and second brackets during assembly of said collapsible chair and which abut a front surface of said first brackets when said chair is completely assembled.
Claim 4
Dependent Claim 18 words
A collapsible chair according to claim 2, wherein said seat support and back rest are made from plastic.
Claim 5
Dependent Claim 12 words
A collapsible chair according to claim 3, wherein said plate is metal.
Claim 6
Dependent Claim 34 words
A collapsible chair according to claim 4 further comprising an elongated stop provided on the bottom surface of said seat between said first and second brackets for engaging with an edge of said plate.

References Cited (Backward Citations)

US2687166A Cited
US2746525A Cited
US3173723A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1983-08-12 1984-02-11 1984-08-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1987-08-12 1988-02-11 1988-08-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1991-08-12 1992-02-11 1992-08-12 $7700.00 Window Closed / Lapsed

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