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:
Nov. 29, 1988
Filed:
Dec. 14, 1987
Yoshihito Asai, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A tank type gas circuit breaker for a three-phase alternating current, comprises: three hollow members spaced in parallel with each other; a single stationary side end plate air-tightly fixed to first ends of the three hollow members; a single mechanism side end plate fixed to second ends of the three hollow members; three stationary contacts each supported to the stationary side end plate and extending in the three hollow members; three movable contacts each supported to the mechanism side end plate and extending in the three hollow members; insulated rods extending in the three hollow members while passing through the mechanism side end plate for interrupting contacts between the movable contacts and the stationary contacts; an operational rotary shaft mechanism disposed adjacent to the mechanism side end plate and connected to the insulated rods for driving each of the insulated rods; an actuator for driving the operational rotary shaft mechanism; two bushing porcelain insulators located on a top surface of each of the hollow members; current transformers arranged in lower sides of the bushing porcelain insulators; conductors disposed within the bushing porcelain insulators and connected to the movable and stationary contacts, and arc-extinction gas filled in the hollow members.