Steel laminate gasket with wide sealing area

Patent 4938488 Issued on July 3, 1990. Estimated Expiration Date:

September 12, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

1815602

1846402

1911226

1982759

2034610

2130110

3567234

3738558

Gasket assembly
Patent #: 4254963
Issued on: 03/10/1981
Inventor: Skrycki

Steel laminate gasket with meshing corrugated beads Patent #: 4759585
Issued on: 07/26/1988
Inventor: Udagawa

Inventors

Application

No. 243528 filed on 09/12/1988

US Classes:

277/595Metallic

Examiners

Primary: Shoap, Allan N.
Assistant: Hohenshell, Jeffrey J.

Attorney, Agent or Firm

Kanesaka and Takeuchi

Foreign Patent References

2818472 DE 10/23/1979

International Class

F16J 015/08

Abstract

A steel laminate gasket of the invention is installed in an internal combustion engine having at least one hole therein. The gasket comprises a first plate having at least one first hole therein corresponding to the hole of the engine, and a second plate having at least one second hole. The first plate is provided with a base portion, at least one curved portion adjacent the first hole, and at least one flange situated parallel to the base portion. The base portion, curved portion and flange are integrally formed together. At least one side wall is formed on one of the base portion and the flange adjacent the curved portion to surround the first hole. The thickness between the flange and base portion inside the side wall is greater than the thickness between the flange and base portion outside the side wall so that an embossed portion is formed around the first hole. The second plate is situated adjacent the first plate so that the second plate does not pile the flange of the first plate.