Patent US3773383A successfully refreshed from Google Patents.
US3773383A
Expired / Lapsed
US
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Readjustable chair
Assignee: J E EKORNES AS
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Filing: 1971-10-28
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Granted: 1973-11-20
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Expires: 1991-10-28
Abstract
Abstract Readjustable chair of the kind where a seat and a back are hinge connected to each other, and are supported on a leg subframe work such that the mutual angular position of the seat and back may be altered. Two rigidly fixed supports are provided on each side of the chair, raising from the leg subframe work, and which can carry arm rests. The back of the chair is pivoted to the back support. The seat is fixed to the other support by a pair of slidable and fixable slide shoes.
Inventors
- 👤 J Ekornes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:36
CPC Classifications
A; A47; A47C; A47C1/00; A47C1/02; A47C1/031; A47C1/032; A47C1/03294; A47C1/03205; A47C1/0325; A47C1/03255
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
157 words
Readjustable chair of the kind where the seat and the back are hinge connected to each other and where these parts are supported on a leg subframe work such that the mutual angular position of the seat and back may be altered as required, and where rigidly fixed rear and front supports on each side of the chair rise from the leg subframe work, said supports at the upper end carrying or passing into arm rests, and where the back is mounted pivotally on to the rear supports, characterized in that the seat and front supports are connected via slide shoes fixedly attached to said seat a predetermined distance from the hinge connection between said seat and back and to said front supports via means for sliding therealong, said slide shoes including means for securing and releasing the same along said front support, said front support extending in an upward, forward path from the leg subframe work.
Claim 2
Dependent Claim
157 words
Readjustable chair of the kind where the seat and the back are hinge connected to each other and where these parts are supported on a leg subframe work such that the mutual angular position of the seat and back may be altered as required, and where rigidly fixed rear and front supports on each side of the chair rise from the leg subframe work, said supports at the upper end carrying or passing into arm rests, and where the back is mounted pivotally on to the rear supports, characterized in that the seat and front supports are connected via slide shoes fixedly attached to said seat a predetermined distance from the hinge connection between said seat and back and to said front supports via means for sliding therealong, said slide shoes including means for securing and releasing the same along said front support, said front support extending in an upward, forward path from the leg subframe work.
Claim 3
Dependent Claim
22 words
Chair according to claim 1, characterized by that a guide is entered in the connection between the seat and the front supports.
Claim 4
Dependent Claim
45 words
A chair according to claim 1 wherein said slide shoes and means for securing and releasing the same along said front support comprise means for varying friction between said front supports and said shoes and for locking said supports and said shoes in fixed relation.
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) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |