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:
Dec. 02, 2003
Filed:
May. 30, 2002
Hiroyuki Kotaki, Chofu, JP;
Juki Corporation, Tokyo, JP;
Abstract
A thread guide device for a sewing machine comprises thread transfer means and threading means. The thread transfer means includes a thread holding portion capable of holding an upper thread, and the upper thread is held in an upper thread holding position by the thread holding portion and is thus transferred to the vicinity of a lower needle eye. The threading means inserts, into the needle eye, the upper thread transferred to the vicinity of the needle eye by the thread transfer means Moreover, the thread transfer means includes holding pressure changing means (a transfer cam a holding pressure switching roller a holding pressure switching operating plate a holding pressure switching adjusting plate a holding pressure switching link a holding pressure switching plate ) for changing the holding pressure of the thread holding portion during transfer in which the upper thread is to be transferred from the thread holding position to the vicinity of the needle eye and during return in which the upper thread is to be transferred to the vicinity of the needle eye and the thread holding portion is to be then returned to the thread holding position.