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:
Dec. 30, 2003
Filed:
Feb. 09, 2001
Goro Nakamura, Shizuoka-ken, JP;
Takahiro Sato, Shizuoka-ken, JP;
Yazaki Corporation, Tokyo, JP;
Abstract
A compact gas-expansion-type power source breaker by which a power supply circuit can be forcedly and surely isolated only in case of abnormalities such as short-circuiting of a wire harness or collision of road vehicles is provided. A lock for constraining movement of a shaft is set in a locked state by means of pushing force for constraining the movement of the shaft forcedly provided by a reset spring on one hand, and is connected via a lock operation plate with a piston for forcedly providing a reverse pushing force beyond the pushing force of the reset spring sublimation of a gaseous actuating reagent contained in a igniter on the other hand. Once a circuit-cut signal is applied to the igniter , the gas actuating reagent will vaporize or sublimate, and the piston will operate to make the lock released forcedly from the shaft , only when the piston is provided with the reverse pushing force beyond the pushing force of the reset spring by means of gases generated by the vaporization or sublimation of the gaseous actuating reagent . Consequently, it can be avoided that the shaft may move slidingly due to any other causes such as impulse, vibration than the vaporization or sublimation of the gaseous actuating reagent , resulting in the isolation of the power supply circuit.