Patent US3674000A successfully refreshed from Google Patents.
US3674000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reciprocating piston internal combustion engine with a cylinder head and cylinder housing consisting of one block
Assignee: Daimler Benz AG
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Filing: 1970-07-21
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Granted: 1972-07-04
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Expires: 1990-07-21
Abstract
Abstract A reciprocating piston internal combustion engine with a cylinder head and a cylinder housing consisting of one single block, in which the cylinder housing essentially consists of an inner wall defining together with a cylinder head bottom the cylinder space and of an outer wall separated from the inner wall by a cooling space; the cylinder housing is connected with the crankcase by way of bolts or the like whose center longitudinal axes are disposed in or very close to the center of the outer wall while the outer wall extends up to connecting places disposed above the cylinder head bottom; the cylinder head bottom is supported at these connecting places by way of support walls.
Inventors
- 👤 Josef Reisacher
- 👤 Frederich Noltemeyer
- 👤 Reiner Dziggel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 23:04
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/002; F02F1/02; F02F1/10; F02F7/00; F02F7/0065; F02F7/007
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
151 words
A cylinder head and cylinder housing construction for a reciprocating piston internal combustion engine comprising: a cylinder housing having an inner and an outer wall, a cylinder head formed in one piece with the cylinder housing, said inner wall and the bottom of said cylinder head together forming a working cylinder space, said outer wall being spaced from said inner wall to form a cooling space therebetween, connecting means for connecting the cylinder head and inner wall to the outer wall, said connecting means including support wall means extending upwardly from the bottom of the cylinder head to a connecting place at the upper end of the outer wall, and at least one threaded fastener means for threadably fastening the one piece cylinder head and cylinder housing to an engine crankcase, each of said at least one threaded fastener means having longitudinal centerlines located adjacent the center of the outer wall.
Claim 2
Dependent Claim
151 words
A cylinder head and cylinder housing construction for a reciprocating piston internal combustion engine comprising: a cylinder housing having an inner and an outer wall, a cylinder head formed in one piece with the cylinder housing, said inner wall and the bottom of said cylinder head together forming a working cylinder space, said outer wall being spaced from said inner wall to form a cooling space therebetween, connecting means for connecting the cylinder head and inner wall to the outer wall, said connecting means including support wall means extending upwardly from the bottom of the cylinder head to a connecting place at the upper end of the outer wall, and at least one threaded fastener means for threadably fastening the one piece cylinder head and cylinder housing to an engine crankcase, each of said at least one threaded fastener means having longitudinal centerlines located adjacent the center of the outer wall.
Claim 3
Dependent Claim
39 words
A construction according to claim 1, characterized in that said cooling space consists of a single chamber delimited at the top by the support wall means and at the bottom by closure means provided adjacent the threaded fastener means.
Claim 4
Dependent Claim
24 words
A construction according to claim 2, characterized in that said threaded fastener means comprise threaded apertures formed at the bottom of the outer wall.
Claim 5
Dependent Claim
67 words
A construction according to claim 2, characterized in that said closure means is a cross wall between said inner and outer walls, said cross wall being substantially thinner than any of said inner and outer walls and said support wall means whereby substantially all forces are transferred between said inner wall and said threaded fastener means by way of said support wall means and said outer wall.
Claim 6
Dependent Claim
52 words
A construction according to claim 2, characterized in that said closure means is a seal between said inner and outer walls, said seal being constructed such that substantially all forces are transferred between said inner wall and said threaded fastener means by way of said support wall means and said outer wall.
Claim 7
Dependent Claim
29 words
A construction according to claim 1, characterized in that the longitudinal centerlines of the threaded fastener means are disposed substantially in alignment with the center of the outer wall.
Claim 8
Dependent Claim
40 words
A construction according to claim 1, characterized in that said connecting means further includes other walls extending from above said cylinder head bottom to the connecting place, said other walls including meanS for accommodating other functional parts of the engine.
Claim 9
Dependent Claim
18 words
A construction according to claim 7, characterized in that said other walls include inlet and exhaust channel walls.
Claim 10
Dependent Claim
17 words
A construction according to claim 7, characterized in that said other walls include spark plug recess walls.
Claim 11
Dependent Claim
21 words
A construction according to claim 1, characterized in that said outer wall includes reinforcements adjacent each of the threaded connecting means.
Claim 12
Dependent Claim
23 words
A construction according to claim 10, characterized in that said threaded connecting means are symmetrically spaced around the circumference of said outer wall.
Claim 13
Dependent Claim
77 words
A construction according to claim 1, characterized in that said support wall means is inclined with respect to the inner and outer walls such that the horizontal extent of the support wall means is substantially less than its vertical extent, whereby the transfer of forces from the outer wall to the inner wall by way of the support wall means is primarily in the vertical direction with a consequent reduction in transverse forces to the inner wall.
Claim 14
Dependent Claim
77 words
A construction according to claim 2, characterized in that said support wall means is inclined with respect to the inner and outer walls such that the horizontal extent of the support wall means is substantially less than its vertical extent, whereby the transfer of forces from the outer wall to the inner wall by way of the support wall means is primarily in the vertical direction with a consequent reduction in transverse forces to the inner wall.
Claim 15
Dependent Claim
77 words
A construction according to claim 4, characterized in that said support wall means is inclined with respect to the inner and outer walls such that the horizontal extent of the support wall means is substantially less than its vertical extent, whereby the transfer of forces from the outer wall to the inner wall by way of the support wall means is primarily in the vertical direction with a consequent reduction in transverse forces to the inner wall.
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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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |