US3755035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article, mold and method of making article
Assignee: UNIROYAL HOLDING Inc WORLD HEADQUARTERS MIDDLEBURY CONNECTICUT 06749 A CORP OF NEW JERSEY
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Filing: 1971-02-22
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Granted: 1973-08-28
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Expires: 1991-02-22
Abstract
Abstract A method for making an electrical heater in a mold having parallel ribs and grooves comprises moving a sheet of plastic material into the grooves of the mold, positioning a heater member in the grooves over the plastic material and moving a second sheet of plastic material into the grooves over the heater member in each case using sufficient heat to move said sheets of plastic material into the grooves.
Inventors
- 👤 M Olson
- 👤 W Silva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:06
CPC Classifications
H; H05; H05B; H05B3/00; H05B3/20; H05B3/34; H05B3/342; A; A41; A41D; A41D19/00; A41D19/015; A41D19/01529; A41D19/01535; H05B3/36; H05B2203/00; H05B2203/014; H05B2203/017; H05B2203/036; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1028
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
207 words
The method of making an electrical heater in a mold having parallel rows of elongated, slotted ribs and having spaced, interconnected, intervening grooves with pins disposed at both ends of said grooves comprising the steps of: positioning a first sheet of plastic material on the mold; backing said first sheet of plastic material by a flexible sheet; compressing said flexibly backed plastic sheet against the mold and applying sufficient heat to said plastic material to force said plastic material into said grooves only partially to fill said grooves with said plastic material having generally Ushaped surfaces; winding a heater member continuously in said grooves and around said pins to position said heater member in the lowest region of said generally U-shaped surfaces of said plastic material; positioning a second sheet of plastic material on the mold; backing said second sheet of plastic material by a rigid plate; compressing said rigidly backed plastic sheet against the mold and applying sufficient heat to said plastic material of said second sheet to force said plastic material of said second sheet into said partially filled grooves and over said heater member, completely to fill said grooves, whereby said heater member is embedded in and surrounded by plastic material in said grooves.
Claim 2
Independent Claim
207 words
The method of making an electrical heater in a mold having parallel rows of elongated, slotted ribs and having spaced, interconnected, intervening grooves with pins disposed at both ends of said grooves comprising the steps of: positioning a first sheet of plastic material on the mold; backing said first sheet of plastic material by a flexible sheet; compressing said flexibly backed plastic sheet against the mold and applying sufficient heat to said plastic material to force said plastic material into said grooves only partially to fill said grooves with said plastic material having generally Ushaped surfaces; winding a heater member continuously in said grooves and around said pins to position said heater member in the lowest region of said generally U-shaped surfaces of said plastic material; positioning a second sheet of plastic material on the mold; backing said second sheet of plastic material by a rigid plate; compressing said rigidly backed plastic sheet against the mold and applying sufficient heat to said plastic material of said second sheet to force said plastic material of said second sheet into said partially filled grooves and over said heater member, completely to fill said grooves, whereby said heater member is embedded in and surrounded by plastic material in said grooves.
Claim 3
Dependent Claim
35 words
The method in accordance with claim 1 for making an electrical heater having thumb and finger regions for a glove which includes the steps of partially separating the thumb and finger regions of the heater.
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) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |