US3156500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental chair component
Assignee: Individual
•
Filing: 1963-01-14
•
Granted: 1964-11-10
•
Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Kerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:24
CPC Classifications
A; A61; A61G; A61G15/00; A61G15/10; A61G15/12; A61G15/125; Y; Y10; Y10S; Y10S297/00; Y10S297/03; Y10S5/00; Y10S5/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A DENTAL CHAIR COMPONENT INCLUDING IN COMBINATION A BACK REST AND HEAD REST EACH HAVING PATIENT ENGAGING FRONT SURFACES, SAID HEAD REST BEING INTEGRATED WITH SAID BACK REST AND EXTENDING IN AN IMMOVABLE, SUBSTANTIALLY STRAIGHT LINE RELATION FROM THE UPPER END OF THE BACK REST, SAID BACK REST BEING TRANSVERSELY CURVED AND HAVING FORWARD PROJECTIONS IN ITS FRONT SURFACE AT ITS UPPER END ADJACENT THE SIDES ADAPTED FOR ENGAGEMENT BY THE SHOULDER BLADE PORTIONS OF A PATIENT, SAID HEAD REST BEING OF LESSER LATERAL DIMENSION THAN SAID BACK REST TO FORM AN AREA OF ACCESS FOR A PERSON WORKING ON THE PATIENT AND BEING OF A LENGTH SUFFICIENT TO SUPPORT THE HEAD AND NECK OF THE PATIENT, SAID HEAD REST HAVING A PAIR OF FORWARDLY PROJECTING SIDE WING PORTIONS FORMING A LONGITUDINAL CENTRAL RECESS FOR RECEIVING THE PATIENT''S HEAD AND NECK.
Claim 2
Dependent Claim
141 words
A DENTAL CHAIR COMPONENT INCLUDING IN COMBINATION A BACK REST AND HEAD REST EACH HAVING PATIENT ENGAGING FRONT SURFACES, SAID HEAD REST BEING INTEGRATED WITH SAID BACK REST AND EXTENDING IN AN IMMOVABLE, SUBSTANTIALLY STRAIGHT LINE RELATION FROM THE UPPER END OF THE BACK REST, SAID BACK REST BEING TRANSVERSELY CURVED AND HAVING FORWARD PROJECTIONS IN ITS FRONT SURFACE AT ITS UPPER END ADJACENT THE SIDES ADAPTED FOR ENGAGEMENT BY THE SHOULDER BLADE PORTIONS OF A PATIENT, SAID HEAD REST BEING OF LESSER LATERAL DIMENSION THAN SAID BACK REST TO FORM AN AREA OF ACCESS FOR A PERSON WORKING ON THE PATIENT AND BEING OF A LENGTH SUFFICIENT TO SUPPORT THE HEAD AND NECK OF THE PATIENT, SAID HEAD REST HAVING A PAIR OF FORWARDLY PROJECTING SIDE WING PORTIONS FORMING A LONGITUDINAL CENTRAL RECESS FOR RECEIVING THE PATIENT''S HEAD AND NECK.
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) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |