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:
Dec. 13, 1988
Filed:
Jun. 30, 1987
Applicant:
Inventors:
Shinji Yoshida, Nagoya, JP;
Toshiaki Yanagi, Nagoya, JP;
Assignee:
Brother Kogyo Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G05B / ;
U.S. Cl.
CPC ...
318567 ; 318369 ; 112275 ; 112221 ;
Abstract
A motor control apparatus for a sewing machine comprising a stop device for generating a stop signal instructing stoppage of an alternating current motor, a sensor for sensing a predetermined position of a needle and outputting a position signal thereof, and a stop control responsive to the stop device and the sensor means for controlling a rotating field of an alternating current motor to stop in response to the stop position of the needle when the stop signal and the position signal are received.