US3868953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve seat ring for the fastening in cylinder heads of internal combustion engines
Assignee: Daimler Benz AG
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Filing: 1972-12-22
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Granted: 1975-03-04
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Expires: 1992-12-22
Abstract
Abstract A valve seat ring to be fastened in cylinder heads of internal combustion engines which includes a self-tapping thread by means of which the valve seat ring is secured in the material of the cylinder head.
Inventors
- 👤 Walter Roll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:39
CPC Classifications
F; F01; F01L; F01L3/00; F01L3/22; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49298; Y10T29/49306
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
46 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a selfcutting thread at the valve seat ring, the self-cutting thread includes at least one cutting edge which extends in the axial direction of the valve seat ring.
Claim 2
Dependent Claim
46 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a selfcutting thread at the valve seat ring, the self-cutting thread includes at least one cutting edge which extends in the axial direction of the valve seat ring.
Claim 3
Dependent Claim
26 words
A valve seat ring according to claim 1, charActerized in that the outer diameter of the self-cutting thread is constructed tapering conically in the screw-in direction.
Claim 4
Dependent Claim
61 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a self-cutting thread at the valve seat ring, the outer diameter of the self-cutting thread is constructed tapering conically in the screw-in direction and in that a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction.
Claim 5
Dependent Claim
61 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a self-cutting thread at the valve seat ring, the outer diameter of the self-cutting thread is constructed tapering conically in the screw-in direction and in that a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction.
Claim 6
Dependent Claim
79 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a self-cutting thread at the valve seat ring, and characterized in that the outer diameter of the self-cutting thread is constructed tapering conically in the screw-in direction, a groove for shavings extending in the circumferential direction is provided in the valve seat ring and in that several cutting edges are provided which extend in the axial direction and interrupt the thread.
Claim 7
Dependent Claim
79 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a self-cutting thread at the valve seat ring, and characterized in that the outer diameter of the self-cutting thread is constructed tapering conically in the screw-in direction, a groove for shavings extending in the circumferential direction is provided in the valve seat ring and in that several cutting edges are provided which extend in the axial direction and interrupt the thread.
Claim 8
Dependent Claim
37 words
A valve seat ring according to claim 4, characterized in that grooves are provided for the engagement of a work tool which are disposed mutually opposite along an inner diameter and extend essentially in the axial direction.
Claim 9
Dependent Claim
46 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a selfcutting thread at the valve seat ring, and in that a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction.
Claim 10
Dependent Claim
46 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a selfcutting thread at the valve seat ring, and in that a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction.
Claim 11
Dependent Claim
44 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of self-cutting thread at the valve seat ring, and characterized in that several cutting edges are provided which extend in the axial direction and interrupt the thread.
Claim 12
Dependent Claim
44 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of self-cutting thread at the valve seat ring, and characterized in that several cutting edges are provided which extend in the axial direction and interrupt the thread.
Claim 13
Dependent Claim
37 words
A valve seat ring according to claim 1, characterized in that grooves are provided for the engagement of a work tool which are disposed mutually opposite along an inner diameter and extend essentially in the axial direction.
Claim 14
Dependent Claim
65 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a self-cutting thread at the valve seat ring, and characterized in that a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction, and in that several cutting edges are provided which extend in the axial direction and interrupt the thread.
Claim 15
Dependent Claim
65 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a self-cutting thread at the valve seat ring, and characterized in that a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction, and in that several cutting edges are provided which extend in the axial direction and interrupt the thread.
Claim 16
Dependent Claim
73 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a self-cutting thread at the valve seat ring, a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction, and in that grooves are provided for the engagement of a work tool which are disposed mutually opposite along an inner diameter and which extend essentially in the axial direction.
Claim 17
Dependent Claim
73 words
A valve seat ring for fastening in cylinder heads of internal combustion engines, characterized by the arrangement of a self-cutting thread at the valve seat ring, a groove for shavings is provided in the valve seat ring, which extends in the circumferential direction, and in that grooves are provided for the engagement of a work tool which are disposed mutually opposite along an inner diameter and which extend essentially in the axial direction.
Claim 18
Dependent Claim
94 words
In combination with a cylinder head, a valve seat arrangement for an internal combustion engine, the valve seat arrangement comprising: a valve seat ring, a bore means provided in the cylinder head for receiving said valve seat ring, said bore means including a smooth peripheral wall portion, and self-cutting thread means provided on said valve seat ring for threadably fastening said valve seat ring in said smooth peripheral wall portion of said bore means, said self-cutting thread means including at least one cutting edge extending in the axial direction of the valve seat ring.
Claim 19
Dependent Claim
94 words
In combination with a cylinder head, a valve seat arrangement for an internal combustion engine, the valve seat arrangement comprising: a valve seat ring, a bore means provided in the cylinder head for receiving said valve seat ring, said bore means including a smooth peripheral wall portion, and self-cutting thread means provided on said valve seat ring for threadably fastening said valve seat ring in said smooth peripheral wall portion of said bore means, said self-cutting thread means including at least one cutting edge extending in the axial direction of the valve seat ring.
Claim 20
Dependent Claim
94 words
In combination with a cylinder head, a valve seat arrangement for an internal combustion engine, the valve seat arrangement comprising: a valve seat ring means, a bore means provided in the cylinder head for receiving said valve seat ring, said bore means including a smooth peripheral wall portion, self-cutting thread means provided on said valve seat ring for threadably fastening said valve seat ring in said smooth peripheral wall portion of said bore means, and additional cutting meaNs provided on said valve seat ring for conditioning said bore means for said self-cutting thread means.
Claim 21
Dependent Claim
94 words
In combination with a cylinder head, a valve seat arrangement for an internal combustion engine, the valve seat arrangement comprising: a valve seat ring means, a bore means provided in the cylinder head for receiving said valve seat ring, said bore means including a smooth peripheral wall portion, self-cutting thread means provided on said valve seat ring for threadably fastening said valve seat ring in said smooth peripheral wall portion of said bore means, and additional cutting meaNs provided on said valve seat ring for conditioning said bore means for said self-cutting thread means.
Claim 22
Dependent Claim
30 words
The combination according to claim 12, wherein means are provided in said valve seat ring for receiving material removed from said wall portion when said valve seat ring is inserted.
Claim 23
Dependent Claim
24 words
The combination according to claim 13, wherein means are provided for facilitating insertion and removal of said valve seat ring from said bore means.
Claim 24
Dependent Claim
27 words
The combination according to claim 11, wherein said self-cutting thread means tapers conically in the direction of insertion of said valve seat ring into said bore means.
References Cited (Backward Citations)
US1724036A
Cited
US1958004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |