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. 01, 2000
Filed:
Jun. 03, 1999
Applicant:
Inventors:
Kevin A Weiss, Gurnee, IL (US);
Jeffery S Flannery, Dousman, WI (US);
Dennis J Ulicny, Waukesha, WI (US);
Assignee:
Johnson Controls Technology Company, Plymouth, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ; H02K / ; H02K / ; F16K / ; F16K / ;
U.S. Cl.
CPC ...
310105 ; 310 93 ; 310 95 ; 310 98 ; 310 99 ; 310 / ; 310 77 ; 25112913 ; 251 69 ; 251 71 ;
Abstract
An actuator for an HVAC system includes a motor coupled by an electrically operated clutch to a gear train which drives an output connector. A spring is connected to the transmission to drive the output connector to a normal position in the event of a power failure. A control apparatus is connected to the transmission and provides the combined functions of a magnetic eddy current brake and a motion sensor.