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:
Feb. 17, 1998
Filed:
Mar. 10, 1997
Masaki Shimizu, Toyoake, JP;
Akio Takahashi, Gifu-ken, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A sewing machine including a needle bar for holding a sewing needle which conveys a sewing thread; a shaft member to which the needle bar is connected; a needle-bar drive motor which reciprocates the needle bar via the shaft member; a loop catcher which cooperates with the sewing needle to catch a loop of the sewing thread conveyed by the sewing needle; a catcher drive motor which rotates the loop catcher; an asynchronism detector which detects a first asynchronous state in which an amount of asynchronism between the needle bar and the loop catcher is greater than a first reference value and/or a second asynchronous state in which it is expected that the amount of asynchronism will be greater than a second reference value; and a holding device which holds, when the asynchronism detector detects the first and/or second asynchronous state, the needle bar and/or the loop catcher, at a holding position where the sewing needle and the loop catcher do not collide with each other.