US4064853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine with a pressure-compensating arrangement in the crankcase of the engine
Assignee: Motorenfabrik Hatz GmbH and Co KG
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Filing: 1976-08-09
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Granted: 1977-12-27
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Expires: 1996-08-09
Abstract
Abstract An internal combustion engine having an arrangement for compensating for the pressure in the crankcase of the engine. The arrangement includes a control valve which is arranged so that it is exposed on the one hand to the pressure in the crankcase and on the other hand to the pressure prevailing in an operating chamber which is separate from the connection conduit between the crankcase and the suction pipe and communicates with the atmosphere through an auxiliary conduit.
Inventors
- 👤 Ernst Hatz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:41
CPC Classifications
F; F02; F02B; F02B75/00; F02B75/16; F01; F01M; F01M13/00; F01M13/02; F01M13/021; F01M13/022; F01M13/023
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
An arrangement for compensating the pressure in a crankcase of an internal combustion engine, comprising: conduit means for providing a fluid connection between said crankcase and a suction pipe for said engine, said conduit means including an operating chamber separate from said fluid connection and auxiliary conduit means for connecting said operating chamber to atmospheric pressure, said operating chamber being directly formed in said fluid connection; bypass passageway means for providing passage of a fluid from said crankcase to said suction pipe around said operating chamber, said bypass passageway means comprising tubular jacket means enclosing and being spaced from said fluid connection along the length of said operating chamber; and a shut-off member mounted in said operating chamber and adapted to make or interrupt the connection between said crankcase and said suction pipe through said fluid connection and said bypass passageway means.
Claim 2
Dependent Claim
142 words
An arrangement for compensating the pressure in a crankcase of an internal combustion engine, comprising: conduit means for providing a fluid connection between said crankcase and a suction pipe for said engine, said conduit means including an operating chamber separate from said fluid connection and auxiliary conduit means for connecting said operating chamber to atmospheric pressure, said operating chamber being directly formed in said fluid connection; bypass passageway means for providing passage of a fluid from said crankcase to said suction pipe around said operating chamber, said bypass passageway means comprising tubular jacket means enclosing and being spaced from said fluid connection along the length of said operating chamber; and a shut-off member mounted in said operating chamber and adapted to make or interrupt the connection between said crankcase and said suction pipe through said fluid connection and said bypass passageway means.
Claim 3
Dependent Claim
50 words
An arrangement for an internal combustion engine according to claim 1, wherein said tubular jacket means includes transverse holes which are arranged fore and aft of said operating chamber to provide a fluid connection between said conduit means and said bypass passageway means fore and aft of said operating chamber.
Claim 4
Dependent Claim
46 words
An arrangement for an internal combustion engine according to claim 1, wherein said shut-off member is in the form of a piston which, in its rest position, closes said transverse holes which permit entry of the overflow gases from said crankcase into said tubular jacket means.
Claim 5
Dependent Claim
29 words
An arrangement for an internal combustion engine according to claim 3, wherein said conduit means is approximately vertical and said piston is held in its rest position by gravity.
Claim 6
Dependent Claim
25 words
An arrangement for an internal combustion engine according to claim 3, wherein said piston is biassed in its rest position by an adjustable return spring.
Claim 7
Dependent Claim
20 words
An arrangement for an internal combustion engine according to claim 1, wherein said shut-off member is a spring-loaded ball valve.
References Cited (Backward Citations)
GB380655A
Cited
CH171473A
Cited
US2775960A
Cited
US3056420A
Cited
US3108581A
Cited
US3455285A
Cited
US3664368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |