US3646919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling water conductor system in reciprocating piston internal combustion engines
Assignee: Daimler Benz AG
•
Filing: 1970-07-21
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Granted: 1972-03-07
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Expires: 1990-07-21
Abstract
Abstract A cooling water duct system for reciprocating piston internal combustion engines, particularly for those engines with several cylinder heads, whose discharge apertures for the cooling water are connected to a common collecting line arranged outside of the cylinder heads whereby the collecting line is secured at the cylinder block below the cylinder head seal and the cylinder heads are provided with a vent bore at the highest place of their cooling water spaces.
Inventors
- 👤 Josef Reisacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:14
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/26; F02F1/36; F02F1/40; F01; F01P; F01P11/00; F01P11/02; F02B; F02B75/00; F02B75/16; F02B75/18; F02B75/20; F02B2075/1804; F02B2075/1816; F02B2275/00; F02B2275/34; F02F2001/244; F02F2001/247
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
111 words
A cooling water conduction system in reciprocating piston internal combustion engines whose discharge apertures for cooling water are connected with a common collecting line means arranged external of the cylinder heads, and in which the collecting line means is secured at the cylinder block and is in communication with the discharge apertures by way of channels in the cylinder block extending through the cylinder head seal, characterized in that the engine is an in-line engine in which the collecting line means is provided at the cylinder block below the cylinder head seal, each cylinder head being provided at the highest place of the cooling water space with a vent bore means.
Claim 2
Dependent Claim
111 words
A cooling water conduction system in reciprocating piston internal combustion engines whose discharge apertures for cooling water are connected with a common collecting line means arranged external of the cylinder heads, and in which the collecting line means is secured at the cylinder block and is in communication with the discharge apertures by way of channels in the cylinder block extending through the cylinder head seal, characterized in that the engine is an in-line engine in which the collecting line means is provided at the cylinder block below the cylinder head seal, each cylinder head being provided at the highest place of the cooling water space with a vent bore means.
Claim 3
Dependent Claim
21 words
A cooling water conduction system according to claim 1, characterized in that said in-line engine is a substantially upright in-line engine.
Claim 4
Dependent Claim
20 words
A cooling water conduction system according to claim 2, characterized in that the engine is provided with several cylinder heads.
Claim 5
Dependent Claim
27 words
A cooling water conduction system according to claim 3, characterized in that the collecting line means is disposed substantially in its entirety below the cylinder head seal.
Claim 6
Dependent Claim
34 words
A cooling water conduction system according to claim 2, characterized in that the vent bore means is arranged in each case on the side of the corresponding cylinder head opposite the collecting line means.
Claim 7
Dependent Claim
27 words
A cooling water conduction system according to claim 5, characterized in that the vent line means are arranged outside of a valve cover in the cylinder head.
Claim 8
Dependent Claim
28 words
A cooling water conduction system according to claim 6, characterized in that the vent bore means are connected with each other by way of a common vent line.
Claim 9
Dependent Claim
27 words
A cooling water conduction system according to claim 7, characterized in that the collecting line means is disposed substantially in its entirety below the cylinder head seal.
Claim 10
Dependent Claim
20 words
A cooling water conduction system according to claim 8, characterized in that the engine is provided with several cylinder heads.
Claim 11
Dependent Claim
27 words
A cooling water conduction system according to claim 1, characterizeD in that the vent line means are arranged outside of a valve cover in the cylinder head.
Claim 12
Dependent Claim
28 words
A cooling water conduction system according to claim 10, characterized in that the vent bore means are connected with each other by way of a common vent line.
References Cited (Backward Citations)
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Cited
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US2845051A
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US2841127A
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US2941521A
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US2949103A
Cited
US2976859A
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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) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |