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:
Nov. 09, 1976
Filed:
Mar. 28, 1975
Applicant:
Inventor:
Alfred Heidt, Schwetzingen, DT;
Assignees:
Frankl & Kirchner, Schwetzingen, DT;
Fabrik fur Elektromotoren u. elektrische Apparate, Schwetzingen, DT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D05B / ;
U.S. Cl.
CPC ...
1122 / ;
Abstract
A contactless synchronizer for sewing machines has been developed. This synchronizer contains at least two transmitting elements which rotate with the sewing machine shaft and indicate the angular position of the machine with respect to stationary sensing elements. These sensing elements form a part of the entire circuit of the machine and produce control pulses as each transmitting element passes a sensing element.
Heidt, Alfred. (1976). Contactless synchronizer for sewing machines (U.S. Patent No. 3990374). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3990374
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile