CA1076944A
Expired / Lapsed
CA
⏱️ 0.0 years remaining
Chair
Assignee: Center for Design Research and Development NV
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Filing: 1977-08-17
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Granted: 1980-05-06
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Expires: 1997-08-17
Abstract
Abstract TITLE - CHAIR ABSTRACT OF THE DISCLOSURE The seat of a chair is mounted on a seat-supporting structure of the chair frame by means of closely spaced, parallel sleeves which extend lengthwise on the underside of the seat and which are received in telescoping and sliding relation by seat supports which are parts of a generally centrally located seat supporting structure of the chair frame. The front portion of the seat supporting structure is supported in cantilevered relation by the chair legs or pedestal. The chair back is mounted on a generally centrally located back support of the chair frame to tilt backward independently of the position of the seat from a resiliently restrained, relatively upright position to a backward, tilted position.
Inventors
- 👤 Emilio Ambasz
Bibliographic Details
Application Number
—
Jurisdiction
CA
Data Source
google_patents
Last Synchronized
2026-11-06 13:50
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/02; A47C3/025; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C7/443; A47C7/444
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
172 words
A chair having either legs or a pedestal, a frame mounted on the legs or pedestal, and a seat and a back mounted separately on the frame characterized in that the seat has on its underside adjacent the centre and remote from the sides a pair of elongated sleeves of uniform internal cross-section extending lengthwise in parallel vertical planes and is mounted on a generally centrally located seat-supporting structure, which seat-supporting structure is rigidly joined to the frame and has a lengthwise forwardly extending cantilevered portion and spaced apart seat supports of uniform external cross-section substantially matching the internal cross-section of the sleeves, the sleeves of the seat being received in telescoping and sliding relation on the seat supports of the seat-supporting structure such that the seat is slidable backward and forward, and in that the back is mounted on a generally centrally located back support of the chair frame to tilt backward independently of the position of the seat from a resiliently restrained relatively upright position to a backward tilted position.
Claim 2
Dependent Claim
172 words
A chair having either legs or a pedestal, a frame mounted on the legs or pedestal, and a seat and a back mounted separately on the frame characterized in that the seat has on its underside adjacent the centre and remote from the sides a pair of elongated sleeves of uniform internal cross-section extending lengthwise in parallel vertical planes and is mounted on a generally centrally located seat-supporting structure, which seat-supporting structure is rigidly joined to the frame and has a lengthwise forwardly extending cantilevered portion and spaced apart seat supports of uniform external cross-section substantially matching the internal cross-section of the sleeves, the sleeves of the seat being received in telescoping and sliding relation on the seat supports of the seat-supporting structure such that the seat is slidable backward and forward, and in that the back is mounted on a generally centrally located back support of the chair frame to tilt backward independently of the position of the seat from a resiliently restrained relatively upright position to a backward tilted position.
Claim 3
Dependent Claim
32 words
A chair according to claim 1 and further characterized in that the seat supports are constituted by flanges that extend lengthwise along and generally outwardly from the sides of the seat-supporting structure.
Claim 4
Dependent Claim
49 words
A chair according to claim 1 and further characterized in that there is an upwardly open cavity in the seat-supporting structure which receives a spring and in that the spring is connected between the seat-supporting structure and the seat to urge the seat rearwardly on the seat supporting structure.
Claim 5
Dependent Claim
74 words
A chair according to claim 1 and further characterized in that there is an upwardly open cavity in the seat supporting structure and a member on the underside of the seat projecting into said cavity and engageable with front and back walls of the cavity upon forward and rearward movement, respectively, of the seat on the seat supporting structure, thereby to limit forward and rearward movement of the seat on the seat supporting structure.
Claim 6
Dependent Claim
92 words
A chair according to claim 4 and further characterized in that there is a second upwardly open cavity in the seat supporting structure located rearwardly of the aforementioned cavity, in that there is a passage between the cavities, and in that there is a spring connected between the seat and the seat supporting structure and normally received within the second cavity when the seat is in the rearward position, the spring also extending through the passage between the cavities upon extension thereof when the seat moves forward on the seat supporting structure.
Claim 7
Dependent Claim
44 words
A chair according to claim 1 and further characterized in that the back is mounted on the back support by an articulating structure having a first part secured to the upper end of the back support and a second part secured to the back.
Claim 8
Dependent Claim
37 words
A chair according to claim 6 and further characterized in that the back is mounted on the back support by means of an axle coupling the back to the back support for pivotal movement of the back.
Claim 9
Dependent Claim
45 words
A chair according to claim 7 and further characterized in that the back has a sleeve that receives the upper end of the back support and the sleeve and the back support have interengaging surfaces that limit the extent of pivotal movement of the back.
Claim 10
Dependent Claim
36 words
A chair according to claim 8 and further characterized in that there is a torsion spring associated with the axle and coacting between the back and back support to urqe the back to an upright position.
References Cited (Backward Citations)
No citation records indexed.
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