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. 15, 1998
Filed:
Dec. 05, 1997
Applicant:
Inventors:
Nicholas Herald, Jr, Akron, OH (US);
Charles T Molina, Jr, Mayfield Heights, OH (US);
James C Murphy, Chardon, OH (US);
Assignee:
Essef Corporation, Chardon, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16L / ;
U.S. Cl.
CPC ...
220404 ; 220530 ; 220723 ; 138 30 ;
Abstract
A hydropneumatic pressure vessel comprising a tank wall having wall portions defining a closed cavity. A flexible elastomeric diaphragm separates the cavity into first and second fluid pressure chambers. An edge of the diaphragm is clamped between annular portions of the wall positions and other radially and axially off-set portions of the wall portions are fused to each other.