Patent US3439843A successfully refreshed from Google Patents.
Patent US4513978A successfully refreshed from Google Patents.
US4513978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder head gasket
Assignee: Individual
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Filing: 1981-12-18
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Granted: 1985-04-30
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Expires: 2001-12-18
Abstract
Abstract A gasket is particularly intended for sealing the joint between the cylinder block (4), the cylinder head and a liner (3) inserted in the cylinder block. Such a gasket (G) is of annular shape and comprises a varying thickness radial corrugated part (1) with an annular skirt (2) depending from its outside periphery. The part (1) is intended to be accommodated in an end recess (3a) in the cylinder liner which also has a radially outer recess (3b) which accommodates the skirt (2) so as accurately to center the gasket around the cylinder bore.
Inventors
- 👤 Terence P. Nicholson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:12
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0881; F02; F02F; F02F11/00; F02F11/002
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
83 words
The combination of a gasket and cylinder head and cylinder block assembly including a cylinder liner having an end recess, said gasket comprising a substantially planar ring being in radial cross section of varying thickness corrugation, and having an annular skirt integrally depending from the outer peripheral edge for locating said ring with respect to the bore of the liner said recess accommodating the corrugated radial cross section part of the gasket and a radially outward open recess which accommodates the gasket skirt.
Claim 2
Dependent Claim
83 words
The combination of a gasket and cylinder head and cylinder block assembly including a cylinder liner having an end recess, said gasket comprising a substantially planar ring being in radial cross section of varying thickness corrugation, and having an annular skirt integrally depending from the outer peripheral edge for locating said ring with respect to the bore of the liner said recess accommodating the corrugated radial cross section part of the gasket and a radially outward open recess which accommodates the gasket skirt.
Claim 3
Dependent Claim
29 words
A gasket in accordance with claim 1, in which the varying thickness corrugated part has three maximum thickness portion with plane faces and interface angles of about 120 degrees.
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) | 1988-04-29 | 1988-10-29 | 1989-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-29 | 1992-10-29 | 1993-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-29 | 1996-10-29 | 1997-04-30 | $7700.00 | Window Closed / Lapsed |