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:
Dec. 06, 1988
Filed:
Sep. 14, 1987
Applicant:
Inventors:
Brian F Rericha, Downers Grove, IL (US);
Bernard G Stritzke, Hanover Park, IL (US);
Assignee:
Microdot Inc., Darien, CT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; B23P / ;
U.S. Cl.
CPC ...
277134 ; 29458 ; 277153 ;
Abstract
A seal for use about a rotatable shaft comprises an annular cylindrical elastic sealing element having a radially inwardly extending flange defining a sealing lip at its radially innermost edge. An axially undulatory wave spring molded internally of the flange induces axial undulations in the sealing lip thereon while acting as a garter spring to maintain the lip in contiguity with a shaft passing therethrough. Upon rotation of the shaft, the undulating sealing lip deflects the fluid to be contained therewith away from the seal, thereby increasing seal effectiveness.