Patent US3104914A successfully refreshed from Google Patents.
US3104914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Attachment of headrest to chairback by magnetic means
Assignee: Individual
•
Filing: 1961-11-17
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Granted: 1963-09-24
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Expires: 1981-11-17
Abstract
No abstract record available.
Inventors
- 👤 William E Burton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:28
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/38; Y; Y10; Y10S; Y10S293/00; Y10S293/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A HEADREST ATTACHMENT FOR DENTAL AND SURGICAL FURNITURE COMPRISING A FRAME FOR SAID FURNITURE AND HAVING A CHAIRBACK PROVIDED WITH A FRONT FACE ON WHICH THE BACK OF THE PATIENT NORMALLY RESTS, A PLURALITY OF MAGNETIZABLE PARTICLES OVERLYING SAID FRAME, A COVERING OVER SAID PARTICLES, A HEADREST SHAPED TO ACCOMMODATE THE NECK OF A PATIENT POSITIONED REMOTE FROM THE EDGES OF SAID CHAIRBACK, AND A PLURALITY OF MAGNETS EMBEDDED IN SAID HEADREST ADJACENT SAID FRONT FACE THEREOF, WHEREBY SAID HEADREST MAY BE ADJUSTABLY POSITIONED AND RETAINED RELATIVE TO SAID FRAME BY MAGNETIC ATTRACTION OF SAID MAGNETS FOR AT LEAST SOME OF SAID PARTICLES AND INDEPENDENTLY OF MECHANICAL CONNECTION WITH SAID FRAME.
Claim 2
Dependent Claim
111 words
A HEADREST ATTACHMENT FOR DENTAL AND SURGICAL FURNITURE COMPRISING A FRAME FOR SAID FURNITURE AND HAVING A CHAIRBACK PROVIDED WITH A FRONT FACE ON WHICH THE BACK OF THE PATIENT NORMALLY RESTS, A PLURALITY OF MAGNETIZABLE PARTICLES OVERLYING SAID FRAME, A COVERING OVER SAID PARTICLES, A HEADREST SHAPED TO ACCOMMODATE THE NECK OF A PATIENT POSITIONED REMOTE FROM THE EDGES OF SAID CHAIRBACK, AND A PLURALITY OF MAGNETS EMBEDDED IN SAID HEADREST ADJACENT SAID FRONT FACE THEREOF, WHEREBY SAID HEADREST MAY BE ADJUSTABLY POSITIONED AND RETAINED RELATIVE TO SAID FRAME BY MAGNETIC ATTRACTION OF SAID MAGNETS FOR AT LEAST SOME OF SAID PARTICLES AND INDEPENDENTLY OF MECHANICAL CONNECTION WITH SAID FRAME.
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) | 1966-09-23 | 1967-03-25 | 1967-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-23 | 1971-03-25 | 1971-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-23 | 1975-03-25 | 1975-09-24 | $7700.00 | Window Closed / Lapsed |