US3366097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan drive unit
Assignee: Borg Warner Corp
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Filing: 1966-07-25
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Granted: 1968-01-30
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Expires: 1986-07-25
Abstract
No abstract record available.
Inventors
- 👤 Ernest A Ferris
- 👤 John W Mccoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:03
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/08; F01P7/081; F01P7/082; F01P7/088; F04; F04D; F04D25/00; F04D25/02; F16; F16D; F16D43/00; F16D43/02; F16D43/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN APPARATUS FOR CIRCULATING A STREAM OF AIR ABOUT PORTIONS OF A DRIVING DEVICE, THE IMPROVEMENT IN DRIVING MECHANISM FOR SELECTIVELY CONNECTING A FAN TO SAID DRIVING DEVICE FOR ROTATION THEREWITH COMPRISING; A PAIR OF SELECTIVELY ENGAGEABLE DRIVE COUPLINGS CONNECTED INDEPENDENTLY OF EACH OTHER BETWEEN SAID FAN AND SAID DRIVING DEVICE, EACH OF SAID DRIVE COUPLINGS BEING OPERABLE INDEPENDENTLY OF EACH OTHER, ONE OF SAID DRIVE COUPLINGS INCLUDING A CENTRIFUGAL MEMBER, ROTATABLE WITH SAID DRIVING DEVICE, EFFECTIVE TO SELECTIVELY CONNECT AND DISCONNECT SAID FAN AND SAID DRIVING DEVICE RESPONSIVE TO THE SPEED OF SAID DRIVING DEVICE, THE OTHER OF SAID DRIVE COUPLINGS INCLUDING A THERMALLY RESPONSIVE ACTUATOR, ROTATABLE WITH SAID FAN, EFFECTIVE TO SELECTIVELY CONNECT AND DISCONNECT SAID FAN AND SAID DRIVING DEVICE RESPONSIVE TO THE TEMPERATURE OF THE AIR STREAM CIRCULATED BY SAID FAN.
Claim 2
Dependent Claim
135 words
IN APPARATUS FOR CIRCULATING A STREAM OF AIR ABOUT PORTIONS OF A DRIVING DEVICE, THE IMPROVEMENT IN DRIVING MECHANISM FOR SELECTIVELY CONNECTING A FAN TO SAID DRIVING DEVICE FOR ROTATION THEREWITH COMPRISING; A PAIR OF SELECTIVELY ENGAGEABLE DRIVE COUPLINGS CONNECTED INDEPENDENTLY OF EACH OTHER BETWEEN SAID FAN AND SAID DRIVING DEVICE, EACH OF SAID DRIVE COUPLINGS BEING OPERABLE INDEPENDENTLY OF EACH OTHER, ONE OF SAID DRIVE COUPLINGS INCLUDING A CENTRIFUGAL MEMBER, ROTATABLE WITH SAID DRIVING DEVICE, EFFECTIVE TO SELECTIVELY CONNECT AND DISCONNECT SAID FAN AND SAID DRIVING DEVICE RESPONSIVE TO THE SPEED OF SAID DRIVING DEVICE, THE OTHER OF SAID DRIVE COUPLINGS INCLUDING A THERMALLY RESPONSIVE ACTUATOR, ROTATABLE WITH SAID FAN, EFFECTIVE TO SELECTIVELY CONNECT AND DISCONNECT SAID FAN AND SAID DRIVING DEVICE RESPONSIVE TO THE TEMPERATURE OF THE AIR STREAM CIRCULATED BY SAID FAN.
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) | 1971-01-29 | 1971-07-31 | 1972-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-29 | 1975-07-31 | 1976-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-29 | 1979-07-31 | 1980-01-30 | $7700.00 | Window Closed / Lapsed |