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:
Sep. 12, 1978
Filed:
Jan. 24, 1977
Applicant:
Inventors:
Richard F Malinski, Schaumburg, IL (US);
Aubrey C Childers, Aurora, IL (US);
Assignee:
Other;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H / ; H02P / ;
U.S. Cl.
CPC ...
318475 ; 318434 ; 307124 ;
Abstract
An electrically energized actuator for operating a valve has an output shaft for connection to a rotatable valve stem and is driven, via a gear train, by an electrically energized motor. A safety shut off mechanism is responsive to a predetermined resistance to rotation of the output shaft to operate an electric switch which prevents further operation of the drive motor.