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:
Jan. 21, 2020
Filed:
Jun. 01, 2018
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Yasunori Suzuki, Nagoya, JP;
Hirokazu Hirose, Chiryu, JP;
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya, JP;
Abstract
A sewing machine includes a thread tension mechanism, a thread feed sensor, a sewing portion, a processor, and a memory. By executing instructions stored in the memory, the processor causes a first tension to act on an upper thread by the thread tension mechanism to be in a first state, in a state in which a sewing is stopped. The processor causes a second tension that is smaller than the first tension to act on the upper thread, by causing the thread tension mechanism to be in a second state, when the movement of the upper thread is detected by the thread feed sensor. The processor causes a third tension that is equal to or greater than the second tension to act on the upper thread by causing the thread tension mechanism to be in a third state, in a state in which the sewing is performed.