US4494490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder cover
Assignee: Komatsu Zenoah Co
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Filing: 1983-03-28
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Granted: 1985-01-22
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Expires: 2003-03-28
Abstract
Abstract A cylinder cover being connected to a fan cover, covering the top section of a cylinder. The cylinder cover covering the cylinder of an engine has an opening section at a position close to the fan cover. The opening section of the cylinder cover is covered by a freely removable cover section being secured to the cylinder cover.
Inventors
- 👤 Katsumi Kiyooka
- 👤 Atsushi Harada
- 👤 Kiyoshi Anbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:32
CPC Classifications
F; F01; F01P; F01P1/00; F01P1/02; F01P5/00; F01P5/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
Cylinder cover apparatus for use with an air-cooled internal combustion engine having a cylinder and a fan, the cylinder cover apparatus comprising: a fan cover mounted with the engine in spaced apart relation to the cylinder so as to define an air flow passage guiding a flow of air from the fan to cool the exterior wall of the cylinder; said fan cover at one end thereof defining an opening leading to said cylinder exterior wall from outside the fan cover, so that an accumulation of dirt on the cylinder exterior wall can be removed by access through said opening, and a cover member detachably secured to the engine to block said opening and thereby prevent the air flow from escaping therethrough in normal operation of the engine, so that the cover member can be removed for access to said cylinder external wall whenever cleaning is desired wherein said cover member has an air guide section extending through said opening and engaging said air flow for guiding the air flow generated by the fan to the outer side surface of said cylinder.
Claim 2
Dependent Claim
182 words
Cylinder cover apparatus for use with an air-cooled internal combustion engine having a cylinder and a fan, the cylinder cover apparatus comprising: a fan cover mounted with the engine in spaced apart relation to the cylinder so as to define an air flow passage guiding a flow of air from the fan to cool the exterior wall of the cylinder; said fan cover at one end thereof defining an opening leading to said cylinder exterior wall from outside the fan cover, so that an accumulation of dirt on the cylinder exterior wall can be removed by access through said opening, and a cover member detachably secured to the engine to block said opening and thereby prevent the air flow from escaping therethrough in normal operation of the engine, so that the cover member can be removed for access to said cylinder external wall whenever cleaning is desired wherein said cover member has an air guide section extending through said opening and engaging said air flow for guiding the air flow generated by the fan to the outer side surface of said cylinder.
Claim 3
Dependent Claim
28 words
A cylinder cover as claimed in claim 1, wherein said cover member is formed into such a shape as to cover an ignition plug mounted on said cylinder.
Claim 4
Dependent Claim
33 words
A cylinder cover as claimed in claim 1, wherein one edge section of said cover member is formed to have a hollow section in which a switch for ceasing firing can be installed.
Claim 5
Dependent Claim
69 words
Apparatus as in claim 1, further comprising: an ignition coil operatively associated with said engine and mounted in said air flow passage downstream of the fan, so as to be cooled by said air flow; and wherein said opening is located on said fan cover in line with said coil so that dirt accumulated on the coil can be removed through the opening when said cover member is removed.
Claim 6
Dependent Claim
59 words
Apparatus as in claim 1, wherein: said opening defined by said fan cover is located proximate an end of the cylinder; and said cover member comprises ground support means facing outwardly from said cylinder end when the cover member is attached to the engine, said ground support means providing a stable support for the engine when turned upside down.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-22 | 1988-07-23 | 1989-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-22 | 1992-07-23 | 1993-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-22 | 1996-07-23 | 1997-01-22 | $7700.00 | Window Closed / Lapsed |