The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 26, 1989
Filed:
Jan. 11, 1989
Tatsuro Uchida, Matsudo, JP;
Yoshio Yamada, Koshigaya, JP;
Ishikawa Gasket Co., Ltd., Tokyo, JP;
Abstract
A metal plate of the invention is used for a metal gasket. The metal plate comprises a base plate, at least one first bead to surround an area to be sealed, and at least one second bead extending from the first bead. An intersecting portion is formed between the first and second beads. The intersecting portion is provided with a depression extending from a side of a non-high pressure area toward an inside of the intersecting portion to reduce the size of the intersecting portion. As a result, the intersecting portion of the first and second beads can provide surface pressure at least substantially equal to the rest of the portions of the first and second beads without affecting the sealing ability at a high pressure area when the beads are compressed.