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:
Oct. 05, 2018
Sumitomo Electric Industries, Ltd., Osaka, JP;
Yutaka Matsumura, Osaka, JP;
Shigeyuki Tanaka, Osaka, JP;
Taro Fujita, Osaka, JP;
Takaya Kohori, Kanuma, JP;
Masayuki Ishikawa, Kanuma, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
A core wire for multi-core cables includes a conductor obtained by twisting a plurality of elemental wires, and an insulating layer coated on an outer peripheral surface of the conductor. The insulating layer contains polyethylene-based resin as a main component, and the product of a linear expansion coefficient C1 of the insulating layer in the range of 25° C. to −35° C. and an elastic modulus E1 at −35° C., namely (C1×E1) is 0.01 MPaKor more and 0.90 MPaKor less. The melting point of the polyethylene-based resin is 80° C. or higher and 130° C. or lower.