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:
Jul. 02, 2002
Filed:
Sep. 07, 2001
Tetsuhiro Yamamoto, Ibaraki, JP;
Satoshi Mizushima, Ibaraki, JP;
Hitachi Cable, Ltd., Tokyo, JP;
Abstract
A plurality of perforations has been defined on a plastic tape to be laminated on insulated wire cores . Accordingly, intrusions of the plastic tape in between each of pair-twisted sections are elevated in laminating step of the plastic tape . As a result, collapses in the pair-twisted sections decrease, and in addition, portions of a tape material corresponding to perforations defined on the plastic tape are replaced by air, so that dielectric constant between conductors of the insulated wire cores decreases, whereby decrease in impedance can be reduced. Thus, a twisted flat cable I exhibiting flexibility and accompanying with no decrease in impedance in laminating step is provided.