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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 4490768 B1

PDFFull Text
Date of Patent:
Dec. 25, 1984

Filed:

Jan. 21, 1983

Apparatus for preventing arc discharge of transfer switch circuit for

Applicant:
Inventors:

Toshihiro Mori, Sagamihara, JP;

Yoshifumi Imai, Sagamihara, JP;

Masanori Matsui, Kawaski, JP;

Masao Masumura, Hachiouji, JP;

Assignee:

Jeco Co., Ltd., Kawasaki, JP;

Attorney:

Townsend and Townsend

Primary Examiner:

Thomas W Brown

Assistant Examiner:

L C Schroeder

Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
361-2 ; 361 10 ; 200 / ;
Abstract

In an arc preventing apparatus of a transfer switch connected to an inductive load, the movable contact of the transfer switch is stopped temporarily while it is transferred from one stationary contact to the other by means of a rotary cam. The cam is provided with a high point, a low point and a peripheral portion intermediate the high and low points so that while the actuating lever of the movable contact is engaging the intermediate peripheral portion, the movable contact is held stationary.

Find Patent Forward Citations

Mori, Toshihiro. (1984). Apparatus for preventing arc discharge of transfer switch circuit for (U.S. Patent No. 4490768). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4490768

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

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