US3135550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable chair for professional purposes
Assignee: American Optical Corp
•
Filing: 1961-11-29
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Granted: 1964-06-02
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Expires: 1981-11-29
Abstract
No abstract record available.
Inventors
- 👤 Irwin A Bosack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:01
CPC Classifications
A; A61; A61G; A61G15/00; A61G15/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A CHAIR FOR OPHTHALMIC EXAMINATION AND THE LIKE, COMPRISING A SUPPORTING GUIDE MEMBER HAVING A PAIR OF SPACED, LATERALLY PROJECTING ROLLERS AT EACH SIDE THEREOF, A CHAIR FRAME HAVING A BACK PORTION, A SEAT PORTION AND A GENERALLY HORIZONTAL SHELF PORTION JOINING THE LOWER EXTREMITY OF SAID BACK PORTION AND THE REARWARD EXTREMITY OF SAID SEAT PORTION, A PAIR OF ARCUATE TRACKWAY MEMBERS HAVING ONE END OF EACH FIXED TO THE UNDERSIDE OF SAID SHELF PORTION AND THE OPPOSITE END OF EACH FIXED TO THE UNDERSIDE OF SAID SEAT PORTION ADJACENT THE FORWARD EXTREMITY THEREOF, SAID TRACKWAY MEMBERS HAVING ARCUATE TRACKS THEREIN RECEIVING SAID ROLLERS, SAID SHELF PORTION HAVING AN OPENING THEREIN BETWEEN SAID TRACKWAY MEMBERS, A BRAKE ASSEMBLY MOUNTED ON A TRANSVERSE HORIZONTAL PIVOT AXIS UPON THE FORWARD SIDE OF SAID BACK PORTION ABOVE SAID OPENING IN SAID SHELF PORTION, A BRAKE ROD PIVOTALLY SECURED AT ITS LOWER END TO SAID GUIDE MEMBER AND EXTENDING THROUGH SAID SHELF OPENING AND SAID BRAKE ASSEMBLY TO HOLD SAID CHAIR FRAME IN ADJUSTED POSITIONS,
Claim 2
Dependent Claim
172 words
A CHAIR FOR OPHTHALMIC EXAMINATION AND THE LIKE, COMPRISING A SUPPORTING GUIDE MEMBER HAVING A PAIR OF SPACED, LATERALLY PROJECTING ROLLERS AT EACH SIDE THEREOF, A CHAIR FRAME HAVING A BACK PORTION, A SEAT PORTION AND A GENERALLY HORIZONTAL SHELF PORTION JOINING THE LOWER EXTREMITY OF SAID BACK PORTION AND THE REARWARD EXTREMITY OF SAID SEAT PORTION, A PAIR OF ARCUATE TRACKWAY MEMBERS HAVING ONE END OF EACH FIXED TO THE UNDERSIDE OF SAID SHELF PORTION AND THE OPPOSITE END OF EACH FIXED TO THE UNDERSIDE OF SAID SEAT PORTION ADJACENT THE FORWARD EXTREMITY THEREOF, SAID TRACKWAY MEMBERS HAVING ARCUATE TRACKS THEREIN RECEIVING SAID ROLLERS, SAID SHELF PORTION HAVING AN OPENING THEREIN BETWEEN SAID TRACKWAY MEMBERS, A BRAKE ASSEMBLY MOUNTED ON A TRANSVERSE HORIZONTAL PIVOT AXIS UPON THE FORWARD SIDE OF SAID BACK PORTION ABOVE SAID OPENING IN SAID SHELF PORTION, A BRAKE ROD PIVOTALLY SECURED AT ITS LOWER END TO SAID GUIDE MEMBER AND EXTENDING THROUGH SAID SHELF OPENING AND SAID BRAKE ASSEMBLY TO HOLD SAID CHAIR FRAME IN ADJUSTED POSITIONS,
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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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |