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:
Apr. 09, 1985
Filed:
Jun. 08, 1982
Applicant:
Inventors:
Noel Carroll, Sherbrooke, AU;
Colin J Phelps, Fountain Gate, AU;
Assignee:
Secton Pty. Ltd., Dandenong, AU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 76 ; 310 77 ; 310 78 ; 310 41 ;
Abstract
An electric motor having an electromagnetically operated clutch automatically engageable to lock the motor shaft against rotation in at least one direction. Embodiments are described in which interruption of the power to the motor causes engagement of the clutch and in which application of power to the motor causes disengagement of the clutch. Also disclosed is an automatic sliding door assembly operated by an electric motor having an electromagnetically operable clutch which is engaged on interruption of power to the motor to lock the motor shaft against rotation in one direction.