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. 17, 1978
Filed:
Jun. 25, 1976
Pavel Mikhailovich Movshovich, Moscow, SU;
Gennady Konstantinovich Maximov, Moscow, SU;
Viktor Pavlovich Khavkin, Moskovskaya oblast, Khimki, SU;
Lev Nikolaevich Ivanov, Moscow, SU;
Natalya Borisovna Babushkina, Moscow, SU;
Vladimir Konstantinovich Afanasiev, Moscow, SU;
Tamara Nikolaevna Kudryavtseva, Moscow, SU;
Sergei Vladimirovich Nezelenov, Kostroma, SU;
Other;
Abstract
The present invention relates to methods of twist-plying a fibrous product. In accordance with the proposed method, applied to each of two fibrous ribbons is a pulsating torque created by a vortex of air of an invariable direction. Apart from the pulsating torque, each fibrous ribbon is constantly subjected to an additional torque of the opposite direction. The amount of the additional torque is less than that of the pulsating torque and is equal to 0.1 - 0.8 of its amount. As a result, each of the fibrous ribbons acquires a sign-variable twist. The fibrous ribbons are thereafter joined together and, while untwisting on each other, they become interlaced, thereby forming the finished product. This makes it possible to enhance the quality of the product, to reduce the end breakage thereof, and to improve both the stability and reliability of the process.