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:
Jul. 03, 1990
Filed:
Mar. 09, 1989
Yoshio Shibata, Aichi, JP;
Kabushikikaisha Barudan, Aichi, JP;
Abstract
A detecting electrode is mounted on the path of a thread in a sewing machine. When a cloth is sewn in the sewing machine, a bobbin thread or a needle thread moves spatially against the detecting electrode. An electric signal is obtained on the detecting electrode in response to such movement of the thread. On the other hand, a timing signal generator generates a timing signal synchronous with the vertical movement of the needle in the sewing machine. A discriminator receives the electrical signal from the detecting electrode and the timing signal from the timing signal generator. The discriminator compares the electric signal with a reference signal when it receives the timing signal and outputs a discrimination signal in accordance with the result of the comparison.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile