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:
Mar. 28, 1989
Filed:
Nov. 03, 1987
Joji Kasugai, Ichinomiya, JP;
Satoshi Toki, Inazawa, JP;
Koji Enomoto, Handa, JP;
Takamasa Suzuki, Konan, JP;
Toyoda Gosei Co., Ltd., Nishikasugai, JP;
Abstract
A valve body made of a rubbery elastic material comprising a securing portion which is held by a securing member, and a lip portion which extends from the securing portion and which abuts against a portion to be sealed, which portion to be sealed opposes the securing member. The valve body has an annular recess formed in the base of the lip portion on the side which faces the securing portion or on the side which is opposite to a tip portion thereof. The valve body is so constituted that the gap which starts from the securing portion to the edge of the lip portion is formed on the reverse side of the lip portion when the annular recess is disposed around the lip portion on the side facing the securing portion.