US3625527A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine gasket
Assignee: Ford Motor Co
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Filing: 1970-03-26
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Granted: 1971-12-07
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Expires: 1990-03-26
Abstract
Abstract A gasket of particular value for use in an overhead camshaft engine. Gasket provides a seal between cylinder head boss in which camshaft is journaled and rocker cover, and between the cylinder head and rocker cover. Part of the gasket between boss and rocker cover is made of a softer material than is part between cylinder head and rocker cover. Gasket may be made from mixtures of rubber and cork granules, the relative hardness properties being determined by proportions of rubber and cork used, and by the hardness of the rubber compounds used in the respective parts of the gasket.
Inventors
- 👤 Brian N Brindle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:26
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/067; F02; F02F; F02F7/00; F02F7/006; Y; Y10; Y10S; Y10S277/00; Y10S277/935; Y10S277/944
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
114 words
A gasket of generally rectangular cross section for use in forming a seal between the rocker cover and the cylinder head of an engine, which comprises a first part which, when in use, is interposed between curved surfaces of the rocker cover and cylinder head to form a seal, and a second part bonded to the ends of the first part which, when in use, is interposed between flat surfaces of the rocker cover and cylinder head to form a seal, the first part being made from a softer material than the second part, the gasket in use forming a seal along its length when compressed between the rocker cover and the cylinder head.
Claim 2
Dependent Claim
114 words
A gasket of generally rectangular cross section for use in forming a seal between the rocker cover and the cylinder head of an engine, which comprises a first part which, when in use, is interposed between curved surfaces of the rocker cover and cylinder head to form a seal, and a second part bonded to the ends of the first part which, when in use, is interposed between flat surfaces of the rocker cover and cylinder head to form a seal, the first part being made from a softer material than the second part, the gasket in use forming a seal along its length when compressed between the rocker cover and the cylinder head.
Claim 3
Dependent Claim
38 words
A gasket in accordance with claim 1, wherein the softer first part is comprised of a mixture of rubber and cork granules, and wherein the second part is comprised of a different mixture of rubber and cork granules.
Claim 4
Dependent Claim
32 words
A gasket iN accordance with claim 2, wherein the proportion of cork to rubber in the softer first part is different from the proportion of cork to rubber in the second part.
Claim 5
Dependent Claim
24 words
A gasket in accordance with claim 2, wherein the rubber in the second part is harder than the rubber in the softer first part.
Claim 6
Dependent Claim
32 words
A gasket in accordance with claim 4, wherein the proportion of cork to rubber in the softer first part is different from the proportion of cork to rubber in the second part.
Claim 7
Dependent Claim
166 words
A gasket for an overhead camshaft internal combustion engine having a boss with a curved surface projecting from the cylinder head and the camshaft journaled in and projecting axially through the boss to a point beyond the cylinder head, the gasket being intended to form a seal between a rocker cover and the curved surface of the boss through which the camshaft extends beyond the cylinder head and also between the rocker cover and a flat surface of the cylinder head, wherein the part of the gasket intended to form a seal between the rocker cover and the boss is made from a softer material than the remaining part of said gasket intended to form a seal between the rocker cover and the flat surface of the cylinder head, the ends of the softer part being bonded to the remaining part to form the complete gasket, whereby it is possible to ensure that the gasket is adequately compressed over its entire length to form a seal.
Claim 8
Dependent Claim
166 words
A gasket for an overhead camshaft internal combustion engine having a boss with a curved surface projecting from the cylinder head and the camshaft journaled in and projecting axially through the boss to a point beyond the cylinder head, the gasket being intended to form a seal between a rocker cover and the curved surface of the boss through which the camshaft extends beyond the cylinder head and also between the rocker cover and a flat surface of the cylinder head, wherein the part of the gasket intended to form a seal between the rocker cover and the boss is made from a softer material than the remaining part of said gasket intended to form a seal between the rocker cover and the flat surface of the cylinder head, the ends of the softer part being bonded to the remaining part to form the complete gasket, whereby it is possible to ensure that the gasket is adequately compressed over its entire length to form a seal.
Claim 9
Dependent Claim
38 words
A gasket in accordance with claim 6, wherein the softer part is made of a mixture of nitrile rubber and cork granules, and wherein the remaining part is made from a different mixture of rubber and cork granules.
Claim 10
Dependent Claim
29 words
A gasket in accordance with claim 7, wherein the rubber in the remaining part of the gasket is harder than the rubber in the softer part of the gasket.
Claim 11
Dependent Claim
31 words
A gasket in accordance with claim 8, wherein the proportion of cork to rubber in the softer part is different from the proportion of cork to rubber in the remaining part.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |