US3669082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine having a cooling-air blower
Assignee: Motorenfabrik Hatz GmbH and Co KG
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Filing: 1970-05-07
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Granted: 1972-06-13
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Expires: 1990-05-07
Abstract
Abstract An internal combustion engine having a cooling-air blower such as an axial flow fan having a mounting bolt mounted directly on the cylinder head of the engine and a housing, preferably formed in two shell-halves connected together and mounted on the engine by screws or the like which already exist on the engine. The shell-halves form cooling-air passageways by the engine for air from the blower.
Inventors
- 👤 Ernst Hatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 06:18
CPC Classifications
F; F01; F01P; F01P1/00; F01P1/02; F01P11/00; F01P11/12; F01P5/00; F01P5/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
166 words
An internal combustion engine including a combustion cylinder and a cylinder head, at least one engine element mounted on said cylinder head, holding means for holding said engine element in its mounted position on said cylinder head, a blower mounted on said internal combustion engine, said blower including a fan formed about a mounting bolt, said mounting bolt connected to said cylinder head, and said blower further comprising a blower housing in the form of two shell-halves rigidly connected together and arranged on the engine to direct the air from the fan by the engine to cool the latter, said shell-halves being connected together by screws along a plane which passes through the axis of said cylinder, said screws being applied at a plurality of positions along said plane, including a plurality of positions in the area where the housing forms the blower housing surrounding the fan, said holding means of said engine element being arranged for simultaneously holding said blower housing on the cylinder head.
Claim 2
Dependent Claim
166 words
An internal combustion engine including a combustion cylinder and a cylinder head, at least one engine element mounted on said cylinder head, holding means for holding said engine element in its mounted position on said cylinder head, a blower mounted on said internal combustion engine, said blower including a fan formed about a mounting bolt, said mounting bolt connected to said cylinder head, and said blower further comprising a blower housing in the form of two shell-halves rigidly connected together and arranged on the engine to direct the air from the fan by the engine to cool the latter, said shell-halves being connected together by screws along a plane which passes through the axis of said cylinder, said screws being applied at a plurality of positions along said plane, including a plurality of positions in the area where the housing forms the blower housing surrounding the fan, said holding means of said engine element being arranged for simultaneously holding said blower housing on the cylinder head.
Claim 3
Dependent Claim
80 words
An internal combustion engine according to claim 1, wherein said cylinder head includes inlet and exhaust passages leading, respectively, to and from inlet and exhaust valves of said engine, said engine element comprising inlet and outlet manifolds connected to said inlet and outlet passages, respectively, said holding means comprises elements normally performing a holding function on the engine itself in the absence of the blower housing of attaching said inlet and exhaust passages to said inlet and exhaust manifolds, respectively.
Claim 4
Dependent Claim
29 words
An internal combustion engine according to claim 2, wherein said holding means for holding the blower housing comprises screws which also hold the said manifolds in the cylinder head.
Claim 5
Dependent Claim
28 words
An internal combustion engine according to claim 1, wherein the shell-halves forming the blower housing also serve to define cooling-air passageways around the cylinder head and the cylinder.
Claim 6
Dependent Claim
56 words
An internal combustion engine according to claim 1, wherein the blower fan is constructed as an axial blower fan having a plurality of radially extending vanes and the said mounting bolt for the fan is arranged substantially at right angles to the axis of the cylinder and is fixed in the body of the cylinder head.
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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |