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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.:

US 4922993 B1

PDFFull Text
Date of Patent:
May. 08, 1990

Filed:

Jan. 25, 1989

Method of forming a zinc sleeve on an insulator pin

Applicant:
Inventors:

Hiroto Matsuo, Nagoya, JP;

Iwaji Kawamoto, Nagoya, JP;

Masamichi Ishihara, Ama, JP;

Takaaki Nakagawa, Komaki, JP;

Assignee:

NGK Insulators, Ltd., , JP;

Attorney:

Arnold, White & Durkee

Primary Examiner:

Richard K Seidel

Int. Cl.
CPC ...
B22D / ;
U.S. Cl.
CPC ...
164104 ; 164100 ; 164102 ;
Abstract

The disclosed method forms a zinc sleeve on an insulator pin by dipping the insulator pin in molten zinc at about 450.degree.-650.degree. C. to heat and wet the insulator pin with the molten zinc, setting the hot and wetted insulator pin in a die having an open-top cavity in such a manner that an annular open-top molding cavity is defined around the insulator, the die being at about 50.degree.-300.degree. C. when receiving the insulator pin, pouring molten zinc in the annular molding cavity through its open top, and solidifying the zinc thus poured.

Find Patent Forward Citations

Matsuo, Hiroto. (1990). Method of forming a zinc sleeve on an insulator pin (U.S. Patent No. 4922993). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4922993

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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