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:
Dec. 13, 1988
Filed:
Nov. 18, 1987
Masato Yoshimoto, Ibaraki, JP;
Shinji Ohwaki, Minoo, JP;
Teijin Limited, Osaka, JP;
Abstract
A synthetic polymer multifilament yarn capable of being converted to a bulky yarn is composed of a plurality of irregular individual filaments each having at least two belt-shaped filamentary constituents, at least one core filamentary constituent located between the belt-shaped constituents and extending in a sinuous manner and having a thickness varying alternately between thick and thin, and at least two thin middle filamentary constituents located between the core constituent and the belt-shaped constituents to thereby connect those constituents to each other. In each cross-sectional profile of the individual filaments, the core constituent has an inscribed circle having a diameter (lB), the belt-shaped constituents have a substantially I-shaped cross-section, the middle constituents have a waist-formed cross-sectional profile having a narrowest portion thereof, and the diameter (lB) is larger than diameters (lC) of inscribed circles of cross-sectional regions each consisting of a cross-section of a belt-shaped constituent and a half portion of a waist-formed cross-section of a middle constituent located between the belt-shaped constituent and a line drawn along the narrowest portion of the middle constituent.