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. 10, 1991
Filed:
Dec. 28, 1989
Applicant:
Inventor:
Robert A Hay, II, Midland, MI (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16J / ;
U.S. Cl.
CPC ...
277-1 ; 138 40 ; 277 / ; 277 53 ; 277173 ; 277174 ; 4151682 ; 415230 ;
Abstract
A process for providing a seal around a reciprocating and/or rotating shaft as in an apparatus for manipulating a fluid at least in part by the rotary and/or reciprocal motion of the shaft, involving the insertion of substantially identically configured free-floating seal elements into the gap between the shaft and its housing, and the improved apparatus resulting therefrom.