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. 26, 1988
Filed:
May. 20, 1987
Applicant:
Inventors:
John Berger, Muncie, IN (US);
Jack Rollins, Muncie, IN (US);
Assignee:
Maxon Corporation, Muncie, IN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251328 ; 251174 ;
Abstract
The improved pre-loaded valve follower sealing apparatus comprises a follower ring and flange insert assembly. The assembly includes a pair of hollow cylinders compressively containing a follower preload and sealing element. That follower preload and sealing element is substantially annular in shape, but has an interior fluid contacting surface which is concave in transverse cross-section when not under compression, but which is rendered substantially smoothly cylindrical when placed under compression.