Patent US4639767A successfully refreshed from Google Patents.
Patent US4776073A successfully refreshed from Google Patents.
US4776073A
Expired / Lapsed
US
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Method of manufacturing a steel laminate gasket
Assignee: Ishikawa Gasket Co Ltd
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Filing: 1987-05-26
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Granted: 1988-10-11
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Expires: 2007-05-26
Abstract
Abstract In a method of manufacturing a steel laminate gasket, a plurality of steel plates is separately prepared so that each plate is provided with a plurality of holes. Then, at least two kinds of surface pressure regulation plates are separately prepared. The thickness of the two kinds of the surface pressure regulation plates is different. The surface pressure regulation plates are mounted on one of the steel plates at predetermined portions and connected thereonto so that the surface pressure regulation plates do not move relative to the steel plate. The steel plate with the surface pressure regulation plates is assembled with at least another steel plate.
Inventors
- 👤 Tsunekazu Udagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:49
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0818; F16J15/0825; F16J2015/0837; F16J2015/085; Y; Y10; Y10S; Y10S277/00; Y10S277/922; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1062; Y10T156/1067; Y10T156/1069; Y10T156/1075; Y10T156/1089; Y10T156/1092; Y10T156/1093; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49297
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
107 words
A method of manufacturing a steel laminate gasket comprising, preparing a plurality of steel plates separately, each steel plate having a plurality of holes, preparing at least two kinds of surface pressure regulation plates separately, thickness of the two kinds of the surface pressure regulation plates being different, mounting the surface pressure regulation plates on predetermined portions of one of the steel plates, connecting the respective surface pressure regulation plates onto the steel plate so that the surface pressure regulation plates do not move relative to the steel plate, and assembling the steel plate with the surface pressure regulation plates thereon with at least another steel plate.
Claim 2
Independent Claim
107 words
A method of manufacturing a steel laminate gasket comprising, preparing a plurality of steel plates separately, each steel plate having a plurality of holes, preparing at least two kinds of surface pressure regulation plates separately, thickness of the two kinds of the surface pressure regulation plates being different, mounting the surface pressure regulation plates on predetermined portions of one of the steel plates, connecting the respective surface pressure regulation plates onto the steel plate so that the surface pressure regulation plates do not move relative to the steel plate, and assembling the steel plate with the surface pressure regulation plates thereon with at least another steel plate.
Claim 3
Dependent Claim
44 words
A method of manufacturing a steel laminate gasket according to claim 1, wherein the surface pressure regulation plates of one kind are provided with at least one opening therein respectively, diameter of the opening being the same as diameter of one of the holes.
Claim 4
Dependent Claim
27 words
A method of manufacturing a steel laminate gasket according to claim 2, wherein the surface pressure regulation plates of different kinds are installed around the respective holes.
Claim 5
Dependent Claim
29 words
A method of manufacturing a steel laminate gasket according to claim 3, wherein quality of the respective kinds of the surface pressure regulation plates is different from each other.
Claim 6
Dependent Claim
27 words
A method of manufacturing a steel laminate gasket according to claim 4, wherein said surface pressure regulation plates are connected to the steel plate by spot welding.
Claim 7
Dependent Claim
26 words
A method of manufacturing a steel laminate gasket according to claim 4, wherein said surface pressure regulation plates are connected to the steel plate by glue.
Claim 8
Dependent Claim
32 words
A method of manufacturing a steel laminate gasket according to claim 4, wherein said steel plates are assembled so that the surface pressure regulation plates are situated between the two steel plates.
Claim 9
Dependent Claim
32 words
A method of manufacturing a steel laminate gasket according to claim 4, wherein the surface pressure regulation plate of one kind is partially overlapped with surface pressure regulation plate of another kind.
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) | 1991-10-11 | 1992-04-11 | 1992-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-10-11 | 1996-04-11 | 1996-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-10-11 | 2000-04-11 | 2000-10-11 | $7700.00 | Window Closed / Lapsed |