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:
Jan. 19, 1999
Filed:
Nov. 18, 1997
Applicant:
Inventors:
Koichi Akahane, Nagoya, JP;
Takashi Kondo, Obu, JP;
Koichi Harada, Komaki, JP;
Motonari Nakano, Ichinomiya, JP;
Yoshihisa Nozaki, Hoi-gun, JP;
Assignee:
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D05B / ; D05B / ;
U.S. Cl.
CPC ...
11247001 ; 112220 ; 112275 ;
Abstract
A sewing machine, with independently driven main shaft and loop taker, stores a table containing preset speed correction values for negating rotational speed variations in the loop taker drive shaft caused by torque variations on the same; sets speed correction amounts based on speed correction values read from the speed correction value table; and outputs correction drive signals indicative of those speed correction values to the loop taker drive motor.