Patent US4995126A successfully refreshed from Google Patents.
US4995126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cushion with heating pad
Assignee: Heatmax Inc
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Filing: 1990-04-23
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Granted: 1991-02-26
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Expires: 2010-04-23
Abstract
Abstract A cushion using disposable heat pads. A ventilated outer bag contains in its interior, a sheet having at its upper side a recessed air passage, disposable heat pads containing powders such as of oxidized metal and water-containing material, and a cushion, which are put in layers in this order from the lower side of the bag. The disposable heat pads are well ventilated from the air passage of the sheet laid thereunderneath, so that the heating effect can be improved.
Inventors
- 👤 Toshihiko Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:48
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/62; A47C7/72; A47C7/74; A47C7/748
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
A cushion comprising: a ventilated outer bag (1) having a lower side and an upper side adapted to be contacted by the body of a user, said outer bag having an interior containing, in successive layers arranged between said lower and upper sides, mat means (2) positioned adjacent to said lower side; sheet means (3) disposed above said mat means, said sheet means having on its upper side at least one recessed air passage; disposable heat pad means (4) at the upper side of said sheet means (3); cushion means (5) between said heat pad means (4) and said upper side of said outer bag; and fastener means (6) for interconnecting said mat means (2), sheet means (3) and heat pad means (4).
Claim 2
Dependent Claim
123 words
A cushion comprising: a ventilated outer bag (1) having a lower side and an upper side adapted to be contacted by the body of a user, said outer bag having an interior containing, in successive layers arranged between said lower and upper sides, mat means (2) positioned adjacent to said lower side; sheet means (3) disposed above said mat means, said sheet means having on its upper side at least one recessed air passage; disposable heat pad means (4) at the upper side of said sheet means (3); cushion means (5) between said heat pad means (4) and said upper side of said outer bag; and fastener means (6) for interconnecting said mat means (2), sheet means (3) and heat pad means (4).
Claim 3
Dependent Claim
27 words
A cushion according to claim 1 wherein said sheet means consists of a sheet of thin resin film formed with numerous air-containing protrusions on its upper side.
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) | 1994-02-25 | 1994-08-27 | 1995-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-02-25 | 1998-08-27 | 1999-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-02-25 | 2002-08-27 | 2003-02-26 | $7700.00 | Window Closed / Lapsed |