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:
Aug. 27, 1985
Filed:
Oct. 02, 1984
Applicant:
Inventor:
John V Fredd, Dallas, TX (US);
Assignee:
Otis Engineering Corporation, Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
251 58 ; 251 95 ; 251251 ; 251352 ; 166323 ; 166330 ; 74 57 ;
Abstract
A ball valve with cooperative cranks for rotating the ball valve in which the cranks run in arcuate waffle plates having intersecting lands and grooves and wherein the ball valve is spherical and retainer rings cooperate with the ball valve to hold the cranks in engagement with the waffle plate even when pumping through the valve and moving the ball valve away from an upper seat while retaining the ball valve actuator in the closed position.