Patent US3752222A successfully refreshed from Google Patents.
US3752222A
Expired / Lapsed
US
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Transmission oil cooling system
Assignee: Individual
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Filing: 1971-11-18
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Granted: 1973-08-14
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Expires: 1991-11-18
Abstract
Abstract A transmission oil cooling system is improved by a thermostatically controlled bypass valve in the line transferring transmission oil to the oil cooling system whereby the oil flows to the cooling system when the oil is at the desired operating temperature and the valve is opened by the thermostat, but the oil is directed to the return line when below operating temperature and the valve is closed by the thermostat.
Inventors
- 👤 J Olbermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:19
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/04; F16H57/0412; F16H57/0413; F01; F01M; F01M5/00; F01M5/005; F01M5/007; F01P; F01P11/00; F01P11/08; F01P3/00; F01P3/20; F16H57/0415; F28; F28D; F28D1/00; F28D1/02; F28D1/04; F28D1/0408; F28D1/0417; F28D1/0426; F28D1/0435; F01P3/18; F01P2003/187; F01P2060/00; F01P2060/04; F01P2060/045; F28D21/00; F28D2021/0019; F28D2021/008; F28D2021/0089
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
157 words
A cooling system for cooling torque converter transmission oil comprising a transmission, a torque converter utilizing transmission oil as a driving means, a heat exchange system for cooling said transmission oil comprisIng in series a radiator containing said oil in heat exchange relationship with air and engine cooling fluid and an auxiliary for said oil, an oil transfer line from said transmission and torque converter to the inlet of said heat exchange system, an oil return line from the outlet of said heat exchange system, a bypass housing in said oil transfer line containing a bypass valve activated by a thermostat on the inlet side to be open at about 180* and above, said oil flowing through said housing, take-off line and cooling system and returning to the transmission in said temperature range, and said oil being diverted through a bypass line from said inlet side directly to said return line and transmission below said temperature range.
Claim 2
Dependent Claim
157 words
A cooling system for cooling torque converter transmission oil comprising a transmission, a torque converter utilizing transmission oil as a driving means, a heat exchange system for cooling said transmission oil comprisIng in series a radiator containing said oil in heat exchange relationship with air and engine cooling fluid and an auxiliary for said oil, an oil transfer line from said transmission and torque converter to the inlet of said heat exchange system, an oil return line from the outlet of said heat exchange system, a bypass housing in said oil transfer line containing a bypass valve activated by a thermostat on the inlet side to be open at about 180* and above, said oil flowing through said housing, take-off line and cooling system and returning to the transmission in said temperature range, and said oil being diverted through a bypass line from said inlet side directly to said return line and transmission below said temperature range.
Claim 3
Dependent Claim
16 words
A system as in claim 1 wherein there is a check valve in the bypass line.
References Cited (Backward Citations)
US2670933A
Cited
US3353590A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |