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:
Jul. 15, 1980
Filed:
Jul. 18, 1979
Applicant:
Inventors:
Hideo Kawabata, Fujisawa, JP;
Tatsuaki Yukimasa, Chigasaki, JP;
Assignee:
Nippon Oil Seal Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277134 ; 277152 ;
Abstract
Disclosed is a hydrodynamic seal comprising a sealing member of a fluorine resin including a sealing lip portion having a conical shape and a fixing portion extending from the sealing lip portion in the radial direction, a gripping support member for gripping and supporting the fixing portion of said sealing member and a coil spring member wound helically in the conical shape on the sealing lip portion of the sealing member, wherein a spiral projection is formed on the peripheral face of the sealing lip portion by the spring member.