Patent US3758747A successfully refreshed from Google Patents.
US3758747A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric mattress
Assignee: Individual
•
Filing: 1970-10-19
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Granted: 1973-09-11
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Expires: 1990-10-19
Abstract
Abstract A heating cover such as a blanket for therapy having a pair of heating wires woven directly onto the cover and insulated by the fill of the cover material.
Inventors
- 👤 C Rohr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:13
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; H05B2203/00; H05B2203/002; H05B2203/003; H05B2203/014; H05B2203/015; H05B2203/017
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A woven thermal cove including warp strands of insulation material interwoven with continuous weft strands of insulation material having two continuous flexible resistance wires woven into said warp in a spaced parallel pattern, said wires being soldered together at their remote end; the other ends of said resistance wires being connected to one end of an insulated electrical cable exterior of said thermal cover and which at its other end is attached to an electric connector plug, said spaced, parallel wires being separated about one-half inch from each other, and 1 inch from the peripheral edge of said cover, said soldered ends of said wire being at one corner of said cover, while the opposite ends of said wires connected to said cable being located at an opposite corner of said cover.
Claim 2
Dependent Claim
132 words
A woven thermal cove including warp strands of insulation material interwoven with continuous weft strands of insulation material having two continuous flexible resistance wires woven into said warp in a spaced parallel pattern, said wires being soldered together at their remote end; the other ends of said resistance wires being connected to one end of an insulated electrical cable exterior of said thermal cover and which at its other end is attached to an electric connector plug, said spaced, parallel wires being separated about one-half inch from each other, and 1 inch from the peripheral edge of said cover, said soldered ends of said wire being at one corner of said cover, while the opposite ends of said wires connected to said cable being located at an opposite corner of said cover.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |