US3705744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three position folding seat
Assignee: Castelli SpA
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Filing: 1970-04-07
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Granted: 1972-12-12
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Expires: 1990-04-07
Abstract
Abstract A folding chair has a rectangular outer frame in which a Ushaped inner frame is received. A flat seat is received within the inner frame with the seat and two frames all relatively pivotal about a common axis. Stops are provided at the axis to allow the seat to pivot relative to the inner frame from a position coplanar therewith to a position extending at an angle thereto. The U-shaped inner frame can, in turn, pivot from a position coplanar with said outer frame to a position extending at an angle thereto. In this manner the seat can be raised out of the down, use position while the base of the chair remains open and the chair remains standing for storage of the chair or passage of someone past the chair in a cramped aisle. The pivots are completely contained between the frames and seat at the axis so that the chair only has three independently movable pieces.
Inventors
- 👤 Giancarlo Piretti
- 👤 Leonida Castelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:45
CPC Classifications
A; A47; A47C; A47C4/00; A47C4/04; A47C4/08; A47C4/10; A47C4/14; A47C4/18; A47C4/20; A47C4/24; A47C5/00; A47C5/04; A47C5/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
176 words
A folding chair comprising: an outer frame having a lower end and an upper end; an inner frame within said outer frame and having a pair of sides; a seat within said inner frame; and pivot means defining a pivot axis passing through said outer frame intermediate said lower and upper ends, through said inner frame at said sides, and through said seat, said pivot means including first stop means at said axis between said outer frame and said inner frame for pivotal movement of said inner frame relative to said outer frame only between a first position parallel to said outer frame and a second position extending at an angle to said outer frame, and second stop means at said axis between said inner frame and said seat for pivotal movement of said seat relative to said inner frame and independent of the position of said inner frame relative to said outer frame only between a first position parallel to said inner frame and a second position extending at an angle to said inner frame.
Claim 2
Dependent Claim
176 words
A folding chair comprising: an outer frame having a lower end and an upper end; an inner frame within said outer frame and having a pair of sides; a seat within said inner frame; and pivot means defining a pivot axis passing through said outer frame intermediate said lower and upper ends, through said inner frame at said sides, and through said seat, said pivot means including first stop means at said axis between said outer frame and said inner frame for pivotal movement of said inner frame relative to said outer frame only between a first position parallel to said outer frame and a second position extending at an angle to said outer frame, and second stop means at said axis between said inner frame and said seat for pivotal movement of said seat relative to said inner frame and independent of the position of said inner frame relative to said outer frame only between a first position parallel to said inner frame and a second position extending at an angle to said inner frame.
Claim 3
Dependent Claim
37 words
The chair defined in claim 1 wherein said seat includes a seat frame, said stop means each including an axial projection on one of said frames and a recess on another of said frames receiving said projection.
Claim 4
Dependent Claim
31 words
The chair defined in claim 2 wherein said pivot means further includes a pair of bushes lying on said axis and each connected to one of said seats and outer frames.
Claim 5
Dependent Claim
22 words
The chair defined in claim 3 wherein said stop means each includes a synthetic-resin ring extending axially between two of said frames.
Claim 6
Dependent Claim
23 words
The chair defined in claim 1 wherein inner frame defines in said second position an angle of substantially 55* with said outer frame.
Claim 7
Dependent Claim
13 words
The chair defined in claim 1 wherein said outer frame is substantially rectangular.
Claim 8
Dependent Claim
13 words
The chair defined in claim 1 wherein said inner frame is substantially U-shaped.
Claim 9
Dependent Claim
30 words
The chair defined in claim 1 wherein said outer frame has a back at said upper end, said seat lying between said back and said axis in its first position.
Claim 10
Dependent Claim
22 words
The chair defined in claim 1 wherein said seat, said outer frame and saId inner frame all define planes including said axis.
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) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |