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:
Mar. 28, 2000
Filed:
Aug. 25, 1998
Tsutomu Mekata, Otsu, JP;
Akio Matsushima, Kyoto, JP;
Murata Kikai Kabushiki Kaisha, Kyoto, JP;
Abstract
To prevent yarn from being cut when an operating spinning machine stops, thereby preventing subsequent re-activation from being affected. In a spinning machine for manufacturing yarn by passing a fiber bundle that exits a draft apparatus 1 through a spinning nozzle 2 injecting a swirling air current and then through a twisting apparatus 3 that twists the fiber bundle in a direction reverse to that of the swirling air current, each spinning unit is driven independently, and the draft apparatus 1 can be decelerated or accelerated with the speed ratio of each pair of rollers being maintained. When the spinning is stopped or activated, the draft apparatus 1 and the twisting apparatus 3 simultaneously decelerate or accelerate so as to be simultaneously stopped or activated, and in response to this operation, air injection from the spinning nozzle 2 stops or starts.