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:
Jun. 06, 1978
Filed:
Aug. 23, 1976
Applicant:
Inventor:
Joseph Lawrence Strabala, Orinda, CA (US);
Assignee:
James M. Carroll Company, Orinda, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16k / ;
U.S. Cl.
CPC ...
251248 ; 2512495 ; 251286 ; 251288 ; 74437 ; 74802 ;
Abstract
The ability to control butterfly valves is greatly enhanced with a geared hand wheel having concentrically contained therein a pair of flat spur gears with at least one tooth difference and a pinion gear meshing with both of these gears with the pinion carried by the hand wheel in a planetary manner about these gears whereby a mechanical advantage is achieved as the spur gears are caused to rotate relative to one another by rotation of the hand wheel to control the valve shaft of the butterfly valve.