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:
Apr. 07, 1998
Filed:
Mar. 28, 1997
Syunzo Naito, Matsuyama, JP;
Setsuo Nakamura, Tokyo, JP;
Teijin Seiki Co., Ltd., Osaka, JP;
Abstract
A yarn heating apparatus, interposed between a false twist apparatus imparting twist to a synthetic fiber yarn and a yarn feed apparatus feeding the synthetic fiber yarn to the false twist apparatus, is designed to heat the synthetic fiber yarn traveling on a yarn travel path extending from the yarn feed apparatus to the false twist apparatus. The yarn travel path includes a twist existence path section through which the twist imparted to the synthetic fiber yarn extends continuously. The yarn heating apparatus comprises a yarn heat member unit formed with a yarn heat channel defining in part the twist existence path section of the yarn travel path for heating the synthetic fiber yarn passing through the yarn heat channel, and a plurality of yarn guide members located in the yarn heat channel of the yarn heat member unit in spaced relationship to one another for guiding the synthetic fiber yarn through the yarn heat channel of the yarn heat member unit. The synthetic fiber yarn in the yarn heat channel is bent by each of the yarn guide members and has a plurality of contact surface portions each brought into contact with each of the yarn guide members. The contact surface portions of the synthetic fiber yarn have lengths, respectively, measured along the yarn travel path. The lengths of the contact surface portions of the synthetic fiber yarn amount to a total contact length which is not less than 4 mm and not more than 20 mm.