US4335725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Therapeutic heat cushion
Assignee: Individual
•
Filing: 1980-08-15
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Granted: 1982-06-22
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Expires: 2000-08-15
Abstract
Abstract A novel portable cushion for selectively heating and supporting portions of a persons back while sitting or while riding in a car is disclosed, for therapeutic purposes and for comfort.
Inventors
- 👤 Barbara J. Geldmacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:15
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/007; H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/36; H05B2203/00; H05B2203/002; H05B2203/003; H05B2203/014; H05B2203/017; H05B2203/029
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
194 words
A portable unitary therapeutic heat supplying cushion adapted for use by a person in the seated position, said cushion comprising: (a) a soft, resilient internal member having a back surface of substantially planar form for contact with the back portion of the seat or chair within which the person sits, said resilient member further having a curved front surface generally conforming to the lower back or lumbar area of the human body, (b) a pair of panels conforming to the curvature of said front surface of said internal member; (c) electrical heating means interposed between said pair of panels; (d) a heat transmissive pad, of less thickness as compared to the thickness of said resilient member, covering the outer one of said pair of panels and conforming to the curvature thereof; (e) a moisture resistant enclosure enclosing said resilient internal member, panels, electrical heating means and heat transmissive pad; (f) a protective cover enclosing said moisture resistant closure and the contents thereof said protective cover being removable for cleaning; and (g) a selectively controllable electrical heating circuit being connectable to a source of electrical energy and being operatively coupled to said electrical heating means.
Claim 2
Dependent Claim
194 words
A portable unitary therapeutic heat supplying cushion adapted for use by a person in the seated position, said cushion comprising: (a) a soft, resilient internal member having a back surface of substantially planar form for contact with the back portion of the seat or chair within which the person sits, said resilient member further having a curved front surface generally conforming to the lower back or lumbar area of the human body, (b) a pair of panels conforming to the curvature of said front surface of said internal member; (c) electrical heating means interposed between said pair of panels; (d) a heat transmissive pad, of less thickness as compared to the thickness of said resilient member, covering the outer one of said pair of panels and conforming to the curvature thereof; (e) a moisture resistant enclosure enclosing said resilient internal member, panels, electrical heating means and heat transmissive pad; (f) a protective cover enclosing said moisture resistant closure and the contents thereof said protective cover being removable for cleaning; and (g) a selectively controllable electrical heating circuit being connectable to a source of electrical energy and being operatively coupled to said electrical heating means.
Claim 3
Dependent Claim
21 words
The invention of claim 1 wherein said heating means comprises an electrical heating wire arranged in serpentine manner between said panels.
Claim 4
Dependent Claim
19 words
The invention of claim 1 wherein said resilient member and said heat transmissive pad are composed of plastic foam.
Claim 5
Dependent Claim
36 words
The invention of claim 1, wherein: said electrical heating circuit is adapted for connection to direct electrical current and incorporates heat control means enabling the user to select the desired heat developed by said heating means.
Claim 6
Dependent Claim
17 words
The invention of claim 1, wherein: said pair of panels are composed of glass fiber impregnated foil.
Claim 7
Dependent Claim
43 words
The invention of claim 1, wherein: (a) said protective cover defines an opening along one side thereof for insertion and removal of said heat supplying cushion; and (b) closure means being provided on said protective cover to ensure retention of said cushion therein.
References Cited (Backward Citations)
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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) | 1985-06-21 | 1985-12-21 | 1986-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-21 | 1989-12-21 | 1990-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-21 | 1993-12-21 | 1994-06-22 | $7700.00 | Window Closed / Lapsed |