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:
Jun. 11, 2002
Filed:
May. 01, 2001
Yoshiyuki Tanaka, Toyonaka, JP;
Yamato Mishin Seizo Kabushiki Kaisha, Osaka, JP;
Abstract
The invention provides a sewing machine which comprises needle that moves up and down while sticking into a cloth W on a needle plate and a looper that projects and withdraws under the needle plate so that the looper projects to catch a needle thread left under the needle plate in accordance with the rise of the needle and draw out the thread in accordance with the feeding of the cloth W, and on the other hand, the needle falls to catch the looper thread left under the needle plate upon the withdrawal of the looper , whereby multi-thread chain stitches or covering stitches are formed, wherein a retainer rod is provided which projects and withdraws backward and forward within a plane roughly in parallel with the feed surface of the cloth W while interlocked with the rise and fall of the needle , and this retainer rod catches the looper thread at the projection side of the looper ahead of the needle when projecting rearward, and holds the caught looper thread between the rod and needle under tension.