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:
Nov. 27, 2012
Filed:
Jun. 13, 2008
Kazuhisa Adachi, Tokyo, JP;
Nobuyuki Sema, Tokyo, JP;
Hitoshi Shintate, Tokyo, JP;
Miyuki Ogishima, Tokyo, JP;
Junichi Shinagawa, Tokyo, JP;
Kazuhisa Adachi, Tokyo, JP;
Nobuyuki Sema, Tokyo, JP;
Hitoshi Shintate, Tokyo, JP;
Miyuki Ogishima, Tokyo, JP;
Junichi Shinagawa, Tokyo, JP;
SWCC Showa Cable Systems Co., Ltd., Tokyo, JP;
Abstract
A polymer bushing includes a conductor bar, a conductor insertion hole at a lower end, a rigid insulator around the outer circumference of the conductor bar and having a receiving port for a cable termination, a polymer covering around the outer circumference of the insulator and a number of shadesformed separately along the longer dimension at the outer circumference. A large diameter part is provided above the conductor insertion hole which is in the vicinity of the lower end part of the insulator. A cylindrical shielding metal fitting is concentrically embedded together with the conductor bar in the large diameter part. An electric-field stress-control layer is provided at the interface between the large diameter part and the polymer covering.