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. 08, 1980
Filed:
May. 24, 1978
Nobuyoshi Matumura, Yao, JP;
Kotohiko Tukioka, Kobe, JP;
Maruzen Sewing Machine Co., Ltd., Moriguchi, JP;
Abstract
A presser bar has a presser attachment for holding fabric placed on a machine bed and a shoe is attached to the presser attachment in such a manner as to be slidable in the fabric feed direction. A first slidable variable resistor is fixed to a lateral surface of the shoe, with its slider connected to the presser bar so as to be displaced. A recess is formed in the machine arm or bed at a certain position and a second slidable variable resistor is mounted in the recess, with its slider projecting therethrough. This slider of the second variable resistor is adapted to be displaced, for example, by a button inserted in the recess and confined between the slider and a wall of the recess. The first variable resistor provides a voltage substantially corresponding to the amount of fabric feed, while the second variable resistor provides a voltage corresponding to the button size. Thus, the length of the buttonhole to be stitched is determined by comparing the fabric feed related voltage with the button size related voltage.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile