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:
Feb. 10, 2026
Filed:
Jul. 12, 2021
Mitsubishi Electric Corporation, Tokyo, JP;
Masashi Ueda, Tokyo, JP;
Yasunori Nakamura, Tokyo, JP;
Mitsubishi Electric Corporation, Tokyo, JP;
Abstract
A vacuum circuit breaker includes a grounded tank in which an insulating gas is sealed, a vacuum valve, a movable-side electrode, a fixed-side electrode, a bellows fixed to the movable-side electrode allowed to pass therethrough, to expand and contract in the vacuum valve, a pressure valve regulating gas pressure between a first area enclosed by the bellows and a movable-side frame and a second area enclosed by the grounded tank outside the first area, a pressure release valve releasing the insulating gas from the first area to the outside of the grounded tank, and an anomaly determination unit determining leak of the insulating gas from the grounded tank, based on a gas pressure in the second area measured by a pressure sensor.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile