Patent US4561386A successfully refreshed from Google Patents.
US4561386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan housing for engine
Assignee: Kawasaki Motors Ltd
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Filing: 1984-12-19
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Granted: 1985-12-31
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Expires: 2004-12-19
Abstract
Abstract A housing for an engine cooling fan, which is made up of a double wall construction with a cooling air intake passage arranged at the center and with the space in the double wall construction serving as a fuel tank. Extending in the direction of an engine output shaft, the cooling air intake passage is made up of a nearly cylindrical wall combined to the housing outer and inner walls at both ends, wherein a recoil starter is directly installed concentrically with the engine output shaft.
Inventors
- 👤 Shinichi Tamba
- 👤 Noboru Fukui
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:19
CPC Classifications
F; F01; F01P; F01P5/00; F01P5/02; F01P5/06; F01P1/00; F01P1/02; F02; F02B; F02B75/00; F02B75/007
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
98 words
A fan housing to cover an engine cooling fan mounted on an engine output shaft, which is of a double wall construction around an engine cooling air passage, with the inner space of the double wall serving as a fuel tank, wherein said cooling air intake passage is made up of a nearly circular cylindrical wall which extends in the direction of the engine output shaft and terminates integrally into the outer and inner walls of the fan housing at both ends, as well as wherein a recoil starter is directly installed concentrically with the engine output shaft.
Claim 2
Dependent Claim
98 words
A fan housing to cover an engine cooling fan mounted on an engine output shaft, which is of a double wall construction around an engine cooling air passage, with the inner space of the double wall serving as a fuel tank, wherein said cooling air intake passage is made up of a nearly circular cylindrical wall which extends in the direction of the engine output shaft and terminates integrally into the outer and inner walls of the fan housing at both ends, as well as wherein a recoil starter is directly installed concentrically with the engine output shaft.
Claim 3
Dependent Claim
29 words
The fan housing as claimed in claim 1 wherein an air cleaner chamber is arranged in the double wall construction on a side of said cooling air intake passage.
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) | 1988-12-30 | 1989-07-01 | 1989-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-30 | 1993-07-01 | 1993-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-30 | 1997-07-01 | 1997-12-31 | $7700.00 | Window Closed / Lapsed |