Patent US4643135A successfully refreshed from Google Patents.
US4643135A
Expired / Lapsed
US
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Internal combustion engine
Assignee: A V L GESELLSCHAFT fur VERBRENNUNGSKRAFTMASCHINEN und MESSTECHNIK MBH PROF DR DR HC HANS LIST A AUSTRIAN Corp
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Filing: 1985-10-10
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Granted: 1987-02-17
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Expires: 2005-10-10
Abstract
Abstract A known feature of internal combustion engines is that the cooling-water pump has an impeller which is rigidly connected with a squirrel cage rotor and which is driven without physical contact via the rotatory field of rotating permanent magnets. If such an engine is additionally provided with a flywheel generator, construction of the cooling-water pump is greatly simplified according to this invention, as the permanent magnets of the flywheel generator are simultaneously utilized for driving the impeller, and the water pump is positioned in a concentric recess of the flywheel, thereby saving space.
Inventors
- 👤 Peter Wunsche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:17
CPC Classifications
F; F01; F01P; F01P5/00; F01P5/10; F01P5/12; F02; F02B; F02B67/00; F04; F04D; F04D13/00; F04D13/02; F04D13/06; F04D13/0606; F04D13/064
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
88 words
An internal combustion engine comprising an engine housing, a flywheel generator with rotating permanent magnets and a cooling-water pump, whose housing is attached to said engine housing, said water pump comprises an impeller and a squirrel cage rotor which is rigidly connected with said impeller and can be driven without physical contact via the rotatory field of said permanent magnets, wherein said housing of said water pump with its impeller is placed in a concentric recess of said generator flywheel that is positioned next to said permanent magnets.
Claim 2
Dependent Claim
88 words
An internal combustion engine comprising an engine housing, a flywheel generator with rotating permanent magnets and a cooling-water pump, whose housing is attached to said engine housing, said water pump comprises an impeller and a squirrel cage rotor which is rigidly connected with said impeller and can be driven without physical contact via the rotatory field of said permanent magnets, wherein said housing of said water pump with its impeller is placed in a concentric recess of said generator flywheel that is positioned next to said permanent magnets.
Claim 3
Dependent Claim
27 words
An internal combustion engine according to claim 1, wherein said housing of said water pump is located within the enveloping surface formed by said rotating permanent magnets.
Claim 4
Dependent Claim
31 words
An internal combustion engine according to claim 1 or 2, wherein said impeller of said water pump is configured as a plastic component into which said squirrel cage rotor is integrated.
References Cited (Backward Citations)
FR513224A
Cited
US2033577A
Cited
US2656825A
Cited
US3723029A
Cited
US3860064A
Cited
US4120618A
Cited
US4095922A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |