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:
Jun. 03, 1980
Filed:
Jul. 17, 1978
William M Rinehart, Centralia, MO (US);
A. B. Chance Company, Centralia, MO (US);
Abstract
An arc track resistant, high voltage, filled synthetic resin insulator is disclosed which exhibits a wide range of desirable qualities heretofore unobtainable with any single type of prior insulator. The insulator hereof unexpectedly gives excellent arc track and flame resistance, along with a flexibilized yet rugged construction having good weatherability properties. These qualities are achieved through use of a relatively critical selection of components and proportions which also facilitate cast construction of the insulators by giving a pourable, yet highly filled liquid casting composition during the fabrication stage. The insulators include critical quantities of hydrated alumina (from about 60 to 75% by weight) and a synthetic resin matrix having expoxidized castor oil (18 to 24% by weight) and a glycidyl rigidizer therein, along with a curing agent and accelerator.