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:
Feb. 07, 1984
Filed:
Apr. 09, 1981
Applicant:
Inventors:
Howard W Zuch, Sugar Land, TX (US);
Paul Weber, Alvin, TX (US);
Assignee:
EIM Company, Inc., Missouri City, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ; F16K / ;
U.S. Cl.
CPC ...
74625 ; 192 481 ; 1921 / ; 251130 ;
Abstract
A drive shifting apparatus for a valve control and the like is provided with a source of power for motor operation, a separate source of power for hand operation and a shifting means shiftable between the hand power and motor power sources. The shifting means may be a spring loaded clutch normally connecting the motor power source with the valve control, a latch means to hold the clutch in the hand power position against the spring pressure and a cam on the motor automatically releasing the latch when the motor is energized.