Patent CA690391A successfully refreshed from Google Patents.
US3714931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder with dry cylinder sleeve
Assignee: MAN AG
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Filing: 1970-11-05
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Granted: 1973-02-06
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Expires: 1990-11-05
Abstract
Abstract A cylinder structure with a forced cooling fluid system and with a dry cylinder bushing for a water or air-cooled piston internal combustion, in which that upper cylinder block portion which is adjacent the cylinder head has annular passage means surrounding the cylinder bore defined by the cylinder block or by a bushing therein while feeding and discharge passage means establish communication between said annular passage means and said cooling fluid system.
Inventors
- 👤 A Neitz
- 👤 H Pickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:49
CPC Classifications
F; F01; F01P; F01P9/00; F01P9/04; F02; F02F; F02F1/00; F02F1/02; F02F1/10; F02F1/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
134 words
A cylinder-piston internal combustion engine with a forced oil circulation cooling system for the engine and an engine lubricating system, which includes: a cylinder block having at least one cylinder bore and adapted for cooling therewith, a cylinder head mounted on said cylinder block and adapted for cooling the same as for said cylinder block, that end portion of each said cylinder bore which is adjacent said cylinder head respectively being provided with at least one independent annular passage means, a dry cylinder bushing installed for each respective cylinder bore and having an outer periphery thereof engaging complementary to said cylinder block directly throughout the interrelationship therebetween, and feeding and discharge conduit means communicating only with said passage means and connectable to said cooling system circumcirculation in direct relationship to said dry cylinder bushing.
Claim 2
Dependent Claim
134 words
A cylinder-piston internal combustion engine with a forced oil circulation cooling system for the engine and an engine lubricating system, which includes: a cylinder block having at least one cylinder bore and adapted for cooling therewith, a cylinder head mounted on said cylinder block and adapted for cooling the same as for said cylinder block, that end portion of each said cylinder bore which is adjacent said cylinder head respectively being provided with at least one independent annular passage means, a dry cylinder bushing installed for each respective cylinder bore and having an outer periphery thereof engaging complementary to said cylinder block directly throughout the interrelationship therebetween, and feeding and discharge conduit means communicating only with said passage means and connectable to said cooling system circumcirculation in direct relationship to said dry cylinder bushing.
Claim 3
Dependent Claim
134 words
A cylinder-piston internal combustion engine with a forced oil circulation cooling system for the engine and an engine lubricating system, which includes: a cylinder block having at least one cylinder bore and adapted for cooling therewith, a cylinder head mounted on said cylinder block and adapted for cooling the same as for said cylinder block, that end portion of each said cylinder bore which is adjacent said cylinder head respectively being provided with at least one independent annular passage means, a dry cylinder bushing installed for each respective cylinder bore and having an outer periphery thereof engaging complementary to said cylinder block directly throughout the interrelationship therebetween, and feeding and discharge conduit means communicating only with said passage means and connectable to said cooling system circumcirculation in direct relationship to said dry cylinder bushing.
Claim 4
Dependent Claim
134 words
A cylinder-piston internal combustion engine with a forced oil circulation cooling system for the engine and an engine lubricating system, which includes: a cylinder block having at least one cylinder bore and adapted for cooling therewith, a cylinder head mounted on said cylinder block and adapted for cooling the same as for said cylinder block, that end portion of each said cylinder bore which is adjacent said cylinder head respectively being provided with at least one independent annular passage means, a dry cylinder bushing installed for each respective cylinder bore and having an outer periphery thereof engaging complementary to said cylinder block directly throughout the interrelationship therebetween, and feeding and discharge conduit means communicating only with said passage means and connectable to said cooling system circumcirculation in direct relationship to said dry cylinder bushing.
Claim 5
Dependent Claim
18 words
An engine according to claim 1, in which said passage means communicates exclusively with said engine lubricating system.
Claim 6
Dependent Claim
20 words
An engine according to claim 2, which includes throttling means interposed in said feeding conduit means of said cooling system.
Claim 7
Dependent Claim
42 words
An engine according to claim 1, in which said dry cylinder bushing is mounted in said cylinder block and defines said cylinder bore, and in which said annular passage means are at least partially defined by said bushing and said cylinder block.
Claim 8
Dependent Claim
75 words
An engine according to claim 1, in which said dry cylinder bushing is inserted in said cylinder block and defines said cylinder bore, said cylinder bushing having that end portion thereof which is adjacent said cylinder head provided with an outer circumferential collar with a peripheral passage thErein defining said annular passage means, said collar forming part of the passage in supporting said dry cylinder bushing in the cylinder bore at the peripheral passage location.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |