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:
Oct. 01, 1991
Filed:
Aug. 21, 1989
Applicant:
Inventors:
Kiyoshi Kawakubo, Tochigi, JP;
Yoshimi Koguchi, Tochigi, JP;
Assignee:
SSMC Inc., Edison, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B65H / ;
U.S. Cl.
CPC ...
2421 / ; 242 20 ; 242153 ;
Abstract
A tension shaft projects upwardly from a frame. A tension adjusting nut is adjustably screwed into an upper portion of the tension shaft. A pair of tension disks are rotatably supported by the tension shaft. A tension spring is supported by the tension shaft between one of the tension disks and the tension adjusting nut for urging one of the tension disks toward the other tension disk. A thread guide member fixed to the tension shaft has a plurality of thread holes. The device is characterized in that a bobbin thread threaded into the plurality of thread holes is elastically clamped between the pair of tension disks.