US3740096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orthopedic seat
Assignee: Bridg A Back Inc
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Filing: 1971-05-04
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Granted: 1973-06-19
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Expires: 1991-05-04
Abstract
Abstract An orthopedic seat comprising a lower substantially horizontal seat portion and an upper substantially vertical back portion rigidly joined to the seat portion. The lower portion is shaped to act as a base support for the pelvis and sacrum which, in turn, will act as a base for the lumbar dorsal and cervical vertebrae, and the back portion is designed to properly position the vertebrae of a person seated on the lower portion to correct them automatically.
Inventors
- 👤 G Bridger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:37
CPC Classifications
A; A47; A47C; A47C31/00; A47C31/12; A47C31/126; A47C7/00; A47C7/02; A47C7/029; A47C7/36; A47C7/40; A47C7/46
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A seat shell comprising a substantially horizontal seat portion and a substantially vertical back portion extending upwardly therefrom at the rear portion thereof, said back portion having a central recess formed therein and extending from a point adjacent the seat portion upwardly for receiving the spinal column of a person seated on said seat portion; said recess having a maximum depth and minimum width at its lower portion adjacent the seat and gradually increases in width and decreases in depth toward the upper edge of the back portion, said back portion including transversely outwardly convex areas on each side of said central recess such that the spinal column of a seated person is received in said central depression with clearance between the bottom of said central depression and the spinal column.
Claim 2
Dependent Claim
131 words
A seat shell comprising a substantially horizontal seat portion and a substantially vertical back portion extending upwardly therefrom at the rear portion thereof, said back portion having a central recess formed therein and extending from a point adjacent the seat portion upwardly for receiving the spinal column of a person seated on said seat portion; said recess having a maximum depth and minimum width at its lower portion adjacent the seat and gradually increases in width and decreases in depth toward the upper edge of the back portion, said back portion including transversely outwardly convex areas on each side of said central recess such that the spinal column of a seated person is received in said central depression with clearance between the bottom of said central depression and the spinal column.
Claim 3
Dependent Claim
20 words
A seat shell according to claim 1 in which the recess has a forwardly curved section toward its upper end.
Claim 4
Dependent Claim
32 words
A seat shell according to claim 2 in which the seat portion is provided with an upwardly and rearwardly extending gently curved central ridge and transversely curved concavities at each side thereof.
Claim 5
Dependent Claim
130 words
A seat shell comprising a substantially horizontal seat portion and a substantially vertical back portion extending upwardly therefrom at the rear portion thereof, said back portion having a central recess formed therein and extending from a point adjacent the seat portion upwardly for receiving the osseous spinal column of a person seated on said seat portion; said seat portion being provided with a centrally disposed ridge having its highest portion located adjacent to the junction of the back portion, said ridge extending downwardly toward the front edge of said seat portion and merging with the adjacent substantially flat contours before reaching said front edge, and a pair of transversely curved concavities disposed adjacent to each side of said ridge, each of said concavities terminating at an upwardly curved outer edge.
Claim 6
Dependent Claim
130 words
A seat shell comprising a substantially horizontal seat portion and a substantially vertical back portion extending upwardly therefrom at the rear portion thereof, said back portion having a central recess formed therein and extending from a point adjacent the seat portion upwardly for receiving the osseous spinal column of a person seated on said seat portion; said seat portion being provided with a centrally disposed ridge having its highest portion located adjacent to the junction of the back portion, said ridge extending downwardly toward the front edge of said seat portion and merging with the adjacent substantially flat contours before reaching said front edge, and a pair of transversely curved concavities disposed adjacent to each side of said ridge, each of said concavities terminating at an upwardly curved outer edge.
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |