Patent US133842A successfully refreshed from Google Patents.
Patent US3214084A successfully refreshed from Google Patents.
US3214084A
Expired / Lapsed
US
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Electromagnetic friction device and compressor control for same
Assignee: Borg Warner Corp
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Filing: 1961-03-27
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Granted: 1965-10-26
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Expires: 1981-03-27
Abstract
No abstract record available.
Inventors
- 👤 Richard L Smirl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:01
CPC Classifications
F; F16; F16D; F16D27/00; F16D27/02; F16D27/04; F16D27/06; F16D48/00; F16D48/06; F16D48/064; F16D2500/00; F16D2500/10; F16D2500/102; F16D2500/1021; F16D2500/1022; F16D2500/104; F16D2500/10406; F16D2500/10418; F16D2500/10443; F16D2500/1045; F16D2500/30; F16D2500/302; F16D2500/3024; F16D2500/314; F16D2500/31493
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A CLUTCH CONTROL SYSTEM FOR AN AUTOMATIVE VEHICLE AIR-CONDITIONING UNIT, COMPRISING, IN COMBINATION: AN OUTPUT SHAFT; A COMPRESSOR ROTATABLY CARRYING SAID OUTPUT SHAFT AND ADAPTED TO BE DRIVEN THEREBY; INPUT POWER MEANS; AN ELECTROMAGNETIC CLUTCH DEVICE INTERCONNECTING SAID INPUT POWER MEANS AND SAID OUTPUT SHAFT FOR SELECTIVE CONJOINT ROTATION THEREBETWEEN; SAID ELECTRO-MAGNETIC FRICTION DEVICE HAVING AN ELECTRICAL ENERGY SOURCE; A MANUAL SWITCH TO SELECTIVELY CONTROL THE ENERGIZATION OF SAID DEVICE AND A PRESSURE SWITCH RESPONSIVE TO PRESSURE GENERATED BY SAID COMPRESSOR AND IN PARALLEL WITH SAID MANUAL SWITCH TO OVERRIDE THE EFFECT OF SAID MANUAL SWITCH TO MAINTAIN SAID ELECTRO-MAGNEITC FRICTION DEVICE IN THE ENGAGED CONDITION IN RESPONSE TO A PREDETERMINED PRESSURE.
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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) | 1968-10-25 | 1969-04-26 | 1969-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-25 | 1973-04-26 | 1973-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-25 | 1977-04-26 | 1977-10-26 | $7700.00 | Window Closed / Lapsed |