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. 15, 1984
Filed:
Jun. 10, 1983
Applicant:
Inventor:
Howard R Mashaw, Jr, The Colony, TX (US);
Assignee:
Otis Engineering Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; E21B / ;
U.S. Cl.
CPC ...
277 73 ; 277 12 ; 277125 ; 277236 ; 166118 ; 166332 ;
Abstract
A valve having a lead seal for controlling flow through a port in the housing of the valve in which the seal is moved from an out of the way position into a position preventing flow through the port. The seal is metallic and by using a piston-type seal expander in combination with a ball catcher pressure exerted within the valve on a ball may be exerted over the entire area defined by the piston to set the seal under very high pressures, after which the ball and its catching tube may be released from the piston and removed from the valve.