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:
Jul. 30, 1996
Filed:
Apr. 12, 1995
Yutaka Katou, Kariya, JP;
Tadaaki Hashiride, Okazaki, JP;
Aisin Seiki Kabushiki Kaisha, Kariya, JP;
Abstract
The invention is directed to a sewing head driving apparatus for a sewing machine which has a table, a lower rotary shaft provided horizontally below a table, a sewing head provided above the table in spaced relationship therewith, an upper rotary shaft provided horizontally in the sewing head, a transmission mechanism for transmitting a rotational force to rotate the upper rotary shaft and the lower rotary shaft in synchronous relationship with each other, and a needle driving device for reciprocating a needle vertically in accordance with rotation of the upper rotary shaft. In the sewing head driving apparatus, a parallel motion device is provided to support the sewing head movably on a horizontal plane above the table, and move the sewing head between an initial position and a position horizontally apart from the initial position to provide an open area above the table at the initial position, and a synchronous relationship maintaining mechanism is provided to maintain the synchronous relationship between the upper rotary shaft and the lower rotary shaft, independent from the motion of the sewing head by the parallel motion device.