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. 22, 1989
Filed:
Jul. 08, 1987
Applicant:
Inventors:
Michio Hisatake, Kanagawa, JP;
Satoru Ishikawa, Tokyo, JP;
Assignee:
Janome Sewing Machine Co. Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02P / ;
U.S. Cl.
CPC ...
388815 ; 364174 ;
Abstract
A delay circuit is realized by a program, instead of a conventional one of a hard system, so that if a pedal controller is rapidly stepped, a suitable speed acceleration or reduction curve may be always provided and the delay circuit is not affected by changes in temperatures or variations in passing time.
Hisatake, Michio. (1989). Speed control device for an electric sewing machine (U.S. Patent No. 4859917). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4859917
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile