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. 13, 1982
Filed:
May. 05, 1980
Applicant:
Inventors:
Walter L Connolly, Moraga, CA (US);
Harold T Ray, Walnut Creek, CA (US);
Assignee:
Grove Valve and Regulator Company, Oakland, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ; F16K / ;
U.S. Cl.
CPC ...
251367 ;
Abstract
An integral valve end closure and hub formed from a circular section of steel plate having a small coaxial hole in the center. The steel around the hole is swaged outward with a tapered die for initial forming of a hub and then, in a second swaging operation, the outer portion is swaged to substantially cylindrical configuration. The result is an end closure starting with a cylindrical hub at the pipeline connection, and then flaring outward almost to the inner diameter of the main body member to which the closure is attached, by bolting or welding.