US3206153A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tilt swivel mechanism for chairs
Assignee: BJORGENSEN DESIGNS Ltd
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Filing: 1963-02-25
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Granted: 1965-09-14
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Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Maurice P Burke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:52
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/44; A47C7/443; A47C3/00; A47C3/02; A47C3/025; A47C3/026; A47C3/18; A47C7/441
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
IN A TILT MECHANISM FOR A CHAIR: A CHAIR MOUNTING HAVING TWO PARTS, ONE PART HAVING PROVISIONS FOR ATTACHMENT TO A SEAT STRUCTURE; MEANS HIGNEDLY CONNECTING THE PARTS FOR RELATIVE ANGULAR MOVEMENT ABOUT AN AXIS; A SUBSTANTIALLY VERTICAL SUPPORT FOR THE OTHER OF THE PARTS AND ORIENTING SAID AXIS IN A SUBSTANTIALLY HORIZONTAL PLANE; SAID OTHER PART BEARING UPON SAID SUPPORT AWND BEING CONFINED AGAINST LATERAL MOVEMENT WITH RESPECT TO SAID SUPPORT; A COIL SPRING BENEATH THE PARTS AND LOCATED SUBSTANTIALLY VERTICALLY IN THE SUPPORT; AND MEANS CONNECTING THE SPRING TO THE RESPECTIVE PARTS; SAID MEANS BEING CONNECTED TO SAID PARTS AT PLACES TO LOCATE THE AXIS OF SAID SPRING ASKEW TO THE AXIS OF HINGED MOVEMENT OF SAID PARTS; SAID SPRING EXERTING A TORQUE URGING THE PARTS TOWARDS A MUTUALLY LIMITED NORMAL POSITION FROM WHICH THE PARTS ARE CAPABLE OF RELATIVE TILTING.
Claim 2
Dependent Claim
143 words
IN A TILT MECHANISM FOR A CHAIR: A CHAIR MOUNTING HAVING TWO PARTS, ONE PART HAVING PROVISIONS FOR ATTACHMENT TO A SEAT STRUCTURE; MEANS HIGNEDLY CONNECTING THE PARTS FOR RELATIVE ANGULAR MOVEMENT ABOUT AN AXIS; A SUBSTANTIALLY VERTICAL SUPPORT FOR THE OTHER OF THE PARTS AND ORIENTING SAID AXIS IN A SUBSTANTIALLY HORIZONTAL PLANE; SAID OTHER PART BEARING UPON SAID SUPPORT AWND BEING CONFINED AGAINST LATERAL MOVEMENT WITH RESPECT TO SAID SUPPORT; A COIL SPRING BENEATH THE PARTS AND LOCATED SUBSTANTIALLY VERTICALLY IN THE SUPPORT; AND MEANS CONNECTING THE SPRING TO THE RESPECTIVE PARTS; SAID MEANS BEING CONNECTED TO SAID PARTS AT PLACES TO LOCATE THE AXIS OF SAID SPRING ASKEW TO THE AXIS OF HINGED MOVEMENT OF SAID PARTS; SAID SPRING EXERTING A TORQUE URGING THE PARTS TOWARDS A MUTUALLY LIMITED NORMAL POSITION FROM WHICH THE PARTS ARE CAPABLE OF RELATIVE TILTING.
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) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |