US3664698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric actuating mechanism
Assignee: PRODUCT DESIGN AND Manufacturing CORP
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Filing: 1970-04-02
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Granted: 1972-05-23
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Expires: 1990-04-02
Abstract
Abstract ELECTRICALLY OPERATED AUTOMOBILE LATCH MECHANISM UTILIZING A LINEAR ACTUATOR WHICH DEVELOPS OPERATING FORCE BY THE VAPORIZATION OF FREON 113. THE ACTUATOR INCLUDES A SEALED CHAMBER HAVING A FLEXIBLE ANNULARLY FOLDED DIAPHRAGM WHICH IMPARTS MOVEMENT TO A LINEARLY GUIDED PLUNGER, THE FREON BEING CONTAINED IN THE CHAMBER TOGETHER WITH A COILED RESISTANCE HEATER ELEMENT WHICH IS REMOTELY ENERGIZED FROM THE AUTOMOBILE POWER SOURCE.
Inventors
- 👤 George P Stropkay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:48
CPC Classifications
E; E05; E05B; E05B47/00; E05B47/0001; E05B47/0009; Y; Y10; Y10S; Y10S292/00; Y10S292/66; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1047; Y10T292/1075; Y10T292/1082
Claims Analysis
Total Claims: 0
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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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |