US3288525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthopedic chair
Assignee: Individual
•
Filing: 1965-05-17
•
Granted: 1966-11-29
•
Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Donald B Cerf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:57
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/46; A47C7/462
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
AN ORTHOPEDIC CHAIR HAVING A SEAT AND A BACK, SAID SEAT AND SAID BACK EACH HAVING A CONTOURABLE PORTION CONSTITUTED BY A RIGID BACKING, A FELXIBLE DIAPHRAGM AND AN ELASTOMERIC LAYER INTERPOSED THEREBETWEEN, AND MEANS TO IMPART A CURVATURE TO THE DIAPHRAGM PRODUCING A DESIRED CONTOUR APPROPRIATE TO A PARTICULAR OCCUPANT, SAID MEANS ACTING ON THE DIAPHRAGM ON THE BACK BEING CONSTITUATED BY A PLURALITY OF RODS COUPLED AT SPACED POSITIONS TO SAID DIAPHRAGM AND PROJECTING REARWARDLY THROUGH THE RIGID BACKING, THE AXIAL POSITIONS OF SAID RODS WITH RESPECT TO SAID RIGID BACKING BEING ADJUSTABLE TO IMPART A CURVATURE TO SAID DIAPHRAGM WHOSE PROFILE CONFORMS TO THE BACK CURVATURE OF THE OCCUPANT.
Claim 2
Dependent Claim
112 words
AN ORTHOPEDIC CHAIR HAVING A SEAT AND A BACK, SAID SEAT AND SAID BACK EACH HAVING A CONTOURABLE PORTION CONSTITUTED BY A RIGID BACKING, A FELXIBLE DIAPHRAGM AND AN ELASTOMERIC LAYER INTERPOSED THEREBETWEEN, AND MEANS TO IMPART A CURVATURE TO THE DIAPHRAGM PRODUCING A DESIRED CONTOUR APPROPRIATE TO A PARTICULAR OCCUPANT, SAID MEANS ACTING ON THE DIAPHRAGM ON THE BACK BEING CONSTITUATED BY A PLURALITY OF RODS COUPLED AT SPACED POSITIONS TO SAID DIAPHRAGM AND PROJECTING REARWARDLY THROUGH THE RIGID BACKING, THE AXIAL POSITIONS OF SAID RODS WITH RESPECT TO SAID RIGID BACKING BEING ADJUSTABLE TO IMPART A CURVATURE TO SAID DIAPHRAGM WHOSE PROFILE CONFORMS TO THE BACK CURVATURE OF THE OCCUPANT.
References Cited (Backward Citations)
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US2664143A
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US3112137A
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US3198578A
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US3155425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |