Patent US3223376A successfully refreshed from Google Patents.
US3223376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-returning chair control
Assignee: Stewart Warner Corp
•
Filing: 1963-11-18
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Granted: 1965-12-14
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Expires: 1983-11-18
Abstract
No abstract record available.
Inventors
- 👤 Ciuffini Aurelio
- 👤 Williams Philip Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:46
CPC Classifications
A; A47; A47C; A47C3/00; A47C3/18; A47C3/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A SWIVEL CONTROL FOR SUPPORTING A CHAIR HAVING A CHAIR POST RELATIVE TO A PEDESTAL, COMPRISING PLASTIC HUB MEANS HAVING A CAM SURFACE FORMED ON ONE END WALL AND LONGITUDINAL RIBS OF UNIFORM DIAMETER FORMED ON THE PERIPHERAL WALL OF SAID HUB MEANS AND FIXED WITHIN AN OPENING IN SAID PEDESTAL, SAID HUB MEANS HAVING A THROUGH-BORE OF GENERALLY UNIFORM DIMENSION FOR RECEIVING THEREIN THE LOWER END OF THE CHAIR POST FOR FREE AXIAL AND ROTATABLE MOVEMENTS, A FREELY ROTATABLE PLASTIC COLLAR SLIDABLY POSITIONED ON THE CHAIR POST BETWEEN THE HUB MEANS AND THE CHAIR AND HAVING A PERIPHERAL FLANGE, A SPRING POSITIONED BETWEEN THE HUB MEANS AND THE FLANGE OPERABLE TO BIAS SAID COLLAR AND HUB MEAND AXIALLY APART, A RETAINER RING SECURED TO SAID POST, A BEARING INTERPOSED BETWEEN SAID FLANGE AND SAID RING FOR ROTATABLY CARRYING
Claim 2
Dependent Claim
139 words
A SWIVEL CONTROL FOR SUPPORTING A CHAIR HAVING A CHAIR POST RELATIVE TO A PEDESTAL, COMPRISING PLASTIC HUB MEANS HAVING A CAM SURFACE FORMED ON ONE END WALL AND LONGITUDINAL RIBS OF UNIFORM DIAMETER FORMED ON THE PERIPHERAL WALL OF SAID HUB MEANS AND FIXED WITHIN AN OPENING IN SAID PEDESTAL, SAID HUB MEANS HAVING A THROUGH-BORE OF GENERALLY UNIFORM DIMENSION FOR RECEIVING THEREIN THE LOWER END OF THE CHAIR POST FOR FREE AXIAL AND ROTATABLE MOVEMENTS, A FREELY ROTATABLE PLASTIC COLLAR SLIDABLY POSITIONED ON THE CHAIR POST BETWEEN THE HUB MEANS AND THE CHAIR AND HAVING A PERIPHERAL FLANGE, A SPRING POSITIONED BETWEEN THE HUB MEANS AND THE FLANGE OPERABLE TO BIAS SAID COLLAR AND HUB MEAND AXIALLY APART, A RETAINER RING SECURED TO SAID POST, A BEARING INTERPOSED BETWEEN SAID FLANGE AND SAID RING FOR ROTATABLY CARRYING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |