US3719388A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable headrest assembly for a dental chair
Assignee: DEN-TAL-EZ DENTAL PRODUCTS CORP A CORP OF PA
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Filing: 1971-05-12
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Granted: 1973-03-06
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Expires: 1991-05-12
Abstract
Abstract THE HEADREST ASSEMBLY HAS A HEAD RECEIVING DEPRESSION IN THE FRONT SURFACE THEREOF FOR HOLDING THE HEAD IN A CONFORTABLE, YET SECURE POSITION AT ALL TIMES. TO PERMIT CONVENIENT ACCESS TO ALL TOOTH SURFACES TO BE WORKED ON THE HEADREST ASSEMBLY IS SWIVELLY MOUNTED ON THE BACKREST OF A DENTAL CHAIN FOR ADJUSTABLE MOVEMENTS LATERALLY AND TRANSVERSELY OF THE BACKREST AND FOR ROTATIONAL MOVEMENT ABOUT AN UPRIGHT AXIS. A SINGLE CONVENIENTLY LOCATED LEVER IS READILY ACTUATED TO RELEASE THE HEADREST FROM AND TO LOCK THE HEADREST IN AN ADJUSTABLE MOVED POSITION.
Inventors
- 👤 G Fortnam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:55
CPC Classifications
A; A61; A61G; A61G15/00; A61G15/10; A61G15/12; A61G15/125; A47; A47C; A47C7/00; A47C7/36; A47C7/38; A61G2203/00; A61G2203/70; A61G2203/72; A61G2203/723
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |