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:
Aug. 24, 2021
Filed:
Feb. 22, 2017
The Hong Kong Research Institute of Textiles and Apparel Limited, Kowloon, HK;
Bingang Xu, Kowloon, HK;
Jie Feng, Kowloon, HK;
Abstract
A yarn twisting method and device for a ring spinning machine is provided. The twisting method comprises the following steps: feeding three roving strands () into a back roller () of the ring spinning machine; after drafting, the three roving strands, three fiber strands () exiting from a nip point of a front roller (), wherein a fiber strand () in the middle forms an angle with a plane formed by the other two fiber strands (), and thus the three fiber strands () form a multi-strand spinning triangle region having a three-dimensional spatial form; and in the multi-strand spinning triangle region, the three fiber strands () obtaining twist by means of a ring traveler of the ring spinning machine, and the twisted fiber strands () are combined into a composite yarn () through a convergence point.