US4663516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating bed
Assignee: Individual
•
Filing: 1984-11-22
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Granted: 1987-05-05
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Expires: 2004-11-22
Abstract
Abstract A heating bed for therapeutic heat treatment. The heating bed includes a container for accommodating a sand filling which may be heated to a predetermined temperature via a heating device. The sand filling is covered by a cover which is preferably made of textile material.
Inventors
- 👤 Manfred Blum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:10
CPC Classifications
A; A61; A61F; A61F7/00; A61F7/007; A47; A47C; A47C21/00; A47C21/04; A47C21/048
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
103 words
A heating bed, comprising: a box-like container which is open toward the top, and which contains a fine-grained, heat-storing material; a heating device for said heat-storing material, with said heating device being disposed in said, and essentially extending over the entire, container; a flexible cover which is secured to said container, closes off the open top of said container, and rests upon said heat-storing material; said container having a bottom; and a layer disposed between said bottom and said heat-storing material; said layer having a predetermined thickness, and being made of insulating material, said insulating material of said layer being granular, foamed polystyrene.
Claim 2
Dependent Claim
103 words
A heating bed, comprising: a box-like container which is open toward the top, and which contains a fine-grained, heat-storing material; a heating device for said heat-storing material, with said heating device being disposed in said, and essentially extending over the entire, container; a flexible cover which is secured to said container, closes off the open top of said container, and rests upon said heat-storing material; said container having a bottom; and a layer disposed between said bottom and said heat-storing material; said layer having a predetermined thickness, and being made of insulating material, said insulating material of said layer being granular, foamed polystyrene.
Claim 3
Dependent Claim
86 words
A heating bed, comprising: a box-like container which is open toward the top, and which contains a fine-grained, heat-storing material; a heating device for said heat-storing material, with said heating device being disposed in said, and essentially extending over the entire, container; a flexible cover which is secured to said container, closes off the open top of said container, and rests upon said heat-storing material; said container having a bottom; and a layer disposed between said bottom and said heat-storing material, said layer reflecting thermal radiation.
Claim 4
Dependent Claim
86 words
A heating bed, comprising: a box-like container which is open toward the top, and which contains a fine-grained, heat-storing material; a heating device for said heat-storing material, with said heating device being disposed in said, and essentially extending over the entire, container; a flexible cover which is secured to said container, closes off the open top of said container, and rests upon said heat-storing material; said container having a bottom; and a layer disposed between said bottom and said heat-storing material, said layer reflecting thermal radiation.
Claim 5
Dependent Claim
22 words
A heating bed according to claim 2, in which said reflecting layer is an aluminum foil which is coated with synthetic material.
Claim 6
Dependent Claim
100 words
A heating bed, comprising: a box-like container which is open toward the top, and which contains a fine-grained, heat-storing material; a heating device for said heat-storing material, with said heating device being disposed in said, and essentially extending over the entire, container; a flexible cover which is secured to said container, closes off the open top of said container, and rests upon said heat-storing material; said heating device being in the form of an electrical surface heating element; and an electrical grounding grid which is disposed in said heat-storing material approximately parallel to the plane of said surface heating element.
Claim 7
Dependent Claim
100 words
A heating bed, comprising: a box-like container which is open toward the top, and which contains a fine-grained, heat-storing material; a heating device for said heat-storing material, with said heating device being disposed in said, and essentially extending over the entire, container; a flexible cover which is secured to said container, closes off the open top of said container, and rests upon said heat-storing material; said heating device being in the form of an electrical surface heating element; and an electrical grounding grid which is disposed in said heat-storing material approximately parallel to the plane of said surface heating element.
Claim 8
Dependent Claim
23 words
A heating bed according to claim 4, which includes a sheet-like insulating body disposed between said surface heating element and said grounding grid.
Claim 9
Dependent Claim
104 words
A heating bed, comprising: a box-like container which is open toward the top, and which contains a fine-grained, heat-storing material; a heating device for said heat-storing material, with said heating device being disposed in said, and essentially extending over the entire, container; and a flexible cover which is secured to said container, closes off the open top of said container, and rests upon said heat-storing material; said container being provided with a further cover, which can be raised; grooves includes in the region of said container; and supports which are accommodated in said grooves, and are connected to and movable with said further cover.
Claim 10
Dependent Claim
104 words
A heating bed, comprising: a box-like container which is open toward the top, and which contains a fine-grained, heat-storing material; a heating device for said heat-storing material, with said heating device being disposed in said, and essentially extending over the entire, container; and a flexible cover which is secured to said container, closes off the open top of said container, and rests upon said heat-storing material; said container being provided with a further cover, which can be raised; grooves includes in the region of said container; and supports which are accommodated in said grooves, and are connected to and movable with said further cover.
Claim 11
Dependent Claim
35 words
A heating bed according to claim 6, which includes a housing in which are combined electrical devices and means for the operation of said heating device, with said housing also being accommodated by said grooves.
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) | 1990-05-04 | 1990-11-03 | 1991-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-04 | 1994-11-03 | 1995-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-04 | 1998-11-03 | 1999-05-05 | $7700.00 | Window Closed / Lapsed |