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:
Sep. 05, 1978
Filed:
Jul. 08, 1976
Tohru Gonnai, Nagoya, JP;
Chikao Yamashita, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A thread tensioning device for a sewing machine including a pair of elongated plate members closely confronted with each other by a spring member, disposed in the path of a thread, for forming a substantially wedge-shaped and extremely narrow gap therebetween which extends along the thread path, whereby the device can impart a thread passing through the narrow gap between the two plate members a certain tension suitable for the sewing without any manual operation, because the resistance acting on the passing thread is automatically determined in response to the size thereof.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile