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. 04, 2011
Filed:
Apr. 03, 2009
Yasuo Kanegawa, Toyonaka, JP;
Toshiro Mitsuji, Toyonaka, JP;
Yasuo Kanegawa, Toyonaka, JP;
Toshiro Mitsuji, Toyonaka, JP;
Yamato Mishin Seizo Kabushiki Kaisha, Osaka, JP;
Abstract
A needle bar supported in a head unit is connected with a needle bar lever extending from the inside of a sewing machine arm and the needle bar is moved up and down by swing of the needle bar lever about a supporting shaft generated by transmission from a sewing machine main shaft. The sewing machine arm and the head unit are fluid-tightly shielded by a shield plate, and a first sealing part is provided in the shield plate. The first sealing part supports the needle bar lever by fitting a portion of the needle bar lever into seal plates held between a presser plate and a back face of a seal support having a curved shape of a circular arc taken along a swinging locus of the needle bar lever. The inside of the sewing machine arm is oil-lubricated, and the inside of the head unit is grease-lubricated.