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. 04, 1977
Filed:
Sep. 19, 1972
Applicant:
Inventors:
Kazuya Chimura, Ohtake, JA;
Takashi Kaneko, Ohtake, JA;
Ryuichi Nakazono, Ohtake, JA;
Kenichi Sakunaga, Ohtake, JA;
Eiji Umemura, Nishinomiya, JA;
Assignee:
Mitsubishi Rayon Co., Ltd., Osaka, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D02G / ;
U.S. Cl.
CPC ...
5715 / ;
Abstract
Method for producing a crimped yarn in which a thermoplastic yarn is false twisted at a speed exceeding 300 m/min. by using a twisting tube comprising a friction twisting surface of wear-resistant material having a high frictional coefficient, the false twisting being performed under a particular relationship among the yarn speed, surface speed of the twisting tube, denier of the yarn, and the yarn tension at the inlet and outlet sides of the twisting tube.