US3813148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable back support
Assignee: Individual
•
Filing: 1972-04-17
•
Granted: 1974-05-28
•
Expires: 1992-04-17
Abstract
Abstract Adjustable back support having a resilient cushion with metal stiffener bars therein, the metal stiffener bars are resilient when bent below the elastic limit, and malleable when bent thereabove so that the metal stiffener bars can be bent to a desired shape to shape the cushion. In this way the adjustable back support can be contoured to the desires of the particular user, and fitted to a particular back condition and particular support requirement.
Inventors
- 👤 H Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:20
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C7/42; A47C7/425
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
An adustable back support comprising: a sandwich construction comprising a front layer, a deformable layer and a back layer, said front layer and said back layer being formed of resilient material and being secured together and engaging said deformable layer therebetween; said deformable layer comprising a stiffener bar structure made of deformable, resiliently-deflectable metal, said stiffener bar structure comprising a center stiffener bar and first and second side stiffener bars, said center stiffener bar being positioned substantially upright in the center of said adjustable back support, and said side stiffener bars being positioned substantially upright and on oppoSite sides of said center stiffener bar, and each of said stiffener bars being in the form of an uprightpositioned elongated loop, with said loop lying substantially in the plane of said front layer.
Claim 2
Dependent Claim
131 words
An adustable back support comprising: a sandwich construction comprising a front layer, a deformable layer and a back layer, said front layer and said back layer being formed of resilient material and being secured together and engaging said deformable layer therebetween; said deformable layer comprising a stiffener bar structure made of deformable, resiliently-deflectable metal, said stiffener bar structure comprising a center stiffener bar and first and second side stiffener bars, said center stiffener bar being positioned substantially upright in the center of said adjustable back support, and said side stiffener bars being positioned substantially upright and on oppoSite sides of said center stiffener bar, and each of said stiffener bars being in the form of an uprightpositioned elongated loop, with said loop lying substantially in the plane of said front layer.
Claim 3
Dependent Claim
37 words
The adjustable back support of claim 1 wherein said first and second side stiffener bars each have a clasp at the center thereof, so that said side stiffener bars are more stiff than said center stiffener bar.
Claim 4
Dependent Claim
145 words
An adjustable back support comprising: a sandwich construction comprising a front layer, a deformable layer and a back layer, said front layer and said back layer being secured together and engaging said deformable layer therebetween, said front and back layers each being formed of perforated synthetic polymer composition material to form a ventilated adjustable back support; said deformable layer being made of deformable, resiliently-deflectable metal wire, said deformable layer comprising a center stiffener bar, a first side stiffener bar and a second side stiffener bar, said center stiffener bar being positioned substantially upright in the center of said adjustable back support, and said side stiffener bars being positioned substantially upright and on opposite sides of said center stiffener bar, each of said stiffener bars being in the form of an upright-positioned elongated loop, with said loop lying substantially in the plane of said front layer.
Claim 5
Dependent Claim
145 words
An adjustable back support comprising: a sandwich construction comprising a front layer, a deformable layer and a back layer, said front layer and said back layer being secured together and engaging said deformable layer therebetween, said front and back layers each being formed of perforated synthetic polymer composition material to form a ventilated adjustable back support; said deformable layer being made of deformable, resiliently-deflectable metal wire, said deformable layer comprising a center stiffener bar, a first side stiffener bar and a second side stiffener bar, said center stiffener bar being positioned substantially upright in the center of said adjustable back support, and said side stiffener bars being positioned substantially upright and on opposite sides of said center stiffener bar, each of said stiffener bars being in the form of an upright-positioned elongated loop, with said loop lying substantially in the plane of said front layer.
Claim 6
Dependent Claim
37 words
The adjustable back support of claim 3 wherein said first and second side stiffener bars each have a clasp at the center thereof, so that said side stiffener bars are more stiff than said center stiffener bar.
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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) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |