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:
Mar. 31, 1987
Filed:
Mar. 26, 1985
Takeshi Ishihara, Toyoake, JP;
Masaru Kojima, Nagoya, JP;
NGK Insulators, Ltd., , JP;
Abstract
An improved synthetic resin insulator comprising a reinforced plastic rod and a holding metal fitting having a sleeve is disclosed. In the insulator, the reinforced plastic rod is firmly secured to the sleeve of the holding metal fitting by a divided die means including at least five pieces, wherein the rod is inserted into the sleeve and the outer surface of the rod is substantially uniformly compressed in the centripetal direction by the inner surface of the sleeve by pressure exerted by each of the five divided die means pieces, so that the outer circumference of the rod is uniformly compressed at an optional cross-section thereof. The insulator is free from cracks and whitening in the rod and has an improved durable life.