US3763953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine cooling device of an amphibian service car
Assignee: Komatsu Ltd
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Filing: 1971-11-05
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Granted: 1973-10-09
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Expires: 1991-11-05
Abstract
Abstract An engine cooling device of an amphibian service car which has a cooler provided outside of the engine room in a sealed structure containing an engine and a radiator, a hatch provided at the engine room, a conduit connected from the water manifold of the engine to the high temperature side of the cooler, anotherconduit connected from the low temperature side of the cooler to the high temperature side of the radiator, and another conduit connected from the low temperature side of the radiator to the water jacket of the engine. Thus, the engine of the service car is cooled by the radiator on land and by the cooler underwater, without fail.
Inventors
- 👤 T Yoda
- 👤 K Muraki
- 👤 M Kishitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:45
CPC Classifications
B; B60; B60K; B60K11/00; B60F; B60F3/00; B60F3/003; B60F3/0053; F; F01; F01P; F01P3/00; F01P3/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
An engine cooling device of an amphibian service car comprising a cooler with high temperature and low temperature sides provided outside of the engine room and wherein said engine room is a sealed structure containing an engine and a radiator with high temperature and low temperature sides, a hatch provided on the engine room structure, a first conduit connected from a water manifold of the engine to the high temperature side of said cooler, a second conduit connected from the low temperature side of said cooler to the high temperature side of the radiator, and a third conduit connected from the low temperature side of the radiator to a water jacket of the engine.
Claim 2
Dependent Claim
114 words
An engine cooling device of an amphibian service car comprising a cooler with high temperature and low temperature sides provided outside of the engine room and wherein said engine room is a sealed structure containing an engine and a radiator with high temperature and low temperature sides, a hatch provided on the engine room structure, a first conduit connected from a water manifold of the engine to the high temperature side of said cooler, a second conduit connected from the low temperature side of said cooler to the high temperature side of the radiator, and a third conduit connected from the low temperature side of the radiator to a water jacket of the engine.
Claim 3
Dependent Claim
76 words
An engine cooling device of an amphibian service car as set forth in claim 1, wherein said cooler comprises a case fixed outside of the engine room sealed structure for conveying water, wherein said case comprises an upper case into which coolant water fed from the water manifold of the engine flows, and a lower case communicated with the water jacket of the engine, and a plurality of cooling pipes connecting said upper and lower cases.
Claim 4
Dependent Claim
47 words
An engine cooling device of an amphibian service car as set forth in claim 1, wherein said cooler comprises a frame opened at the front, with rear and lower sides, and a lower case mounted through a resilient plate inside both the lower ends of said frame.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |