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. 22, 2000
Filed:
Oct. 09, 1998
Applicant:
Inventor:
Takao Tani, Aichi, JP;
Assignee:
NGK Insulators, Ltd., , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
29887 ; 156245 ; 174211 ; 1741 / ; 1741 / ;
Abstract
A method of forming a polymer insulator is disclosed. The improvement includes the steps of: setting a formed body, having a construction such that a pre-form material is arranged around a rod and end caps are arranged at both end portions of the rod, between an upper die and a lower die, each die having cavities for forming sheds and sheath portions of the polymer insulator; and forming the sheds and the sheath portions of the polymer insulator by means of a compression forming by connecting the upper die and the lower die with compression pressure; wherein the end cap has a shape such that it is accommodated in the cavity for a shed formation.