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:
May. 29, 1984
Filed:
Jul. 25, 1983
Erich J Kocher, Milwaukee, WI (US);
Vilter Manufacturing Corporation, Milwaukee, WI (US);
Abstract
A large manually operated leak-proof corrosion-proof low-cost shut-off or stop valve for handling high pressure refrigerant liquids and/or gases comprises a valve body formed of two sheet metal hemispheres welded to the periphery of a circular metal valve plate having a fluid passage therethrough and hollow cylindrical metal tubes welded to the hemispheres along the edges of circular holes cut in the hemispheres. The cylindrical outer end of a valve spindle extends into a cylindrical bore in the hub of a hand-wheel which is rotatable to open and close the valve. The hand-wheel is secured to a valve spindle by a removable flanged roll pin which fits into a pin hole formed by mating or registering recesses formed in the periphery of the outer end of the valve spindle and in the peripheral wall of the bore in the hub of the hand-wheel. Unscrewing of the bonnet affords access to the sealing materials and, as the bonnet moves axially, it also shifts the hand-wheel off of the outer end of the valve spindle. As this occurs, the wheel hub engages the roll pin flange to force the roll pin out of the pin hole.