Patent US3627445A successfully refreshed from Google Patents.
US3627445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating device for cooling a heat engine
Assignee: S E R M A G SOC D ETUDES ET
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Filing: 1969-04-14
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Granted: 1971-12-14
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Expires: 1989-04-14
Abstract
Abstract Ventilating device for a heat engine comprising a fan and a driving shaft connected to the fan by a coupling constituting a hysteresis drive coupling designed to slip beyond a given maximum transmissible torque. The part of the device which constitutes the armature and must dissipate the heat is located at the end of the device adjacent the fan, so as to face the stream of air created by the fan, whereby this part is cooled by this stream of air.
Inventors
- 👤 Francois Andriussi
- 👤 Pierre Rouques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:48
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/08; F01P7/081
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
38 words
A device as claimed in claim 1, wherein said induced element is the driving part of the device and is provided with cooling fins whereas the inductor element, which is the driven part, is integral with the fan.
Claim 2
Dependent Claim
46 words
A device as claimed in claim 1, wherein said induced element is the driven part and integral with the fan which is of a material which is a good conductor of heat, the inductor element constituting the driving part and being connected to the driving shaft.
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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |