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:
Jul. 25, 2000
Filed:
Jul. 29, 1997
Denso Corporation, Kariya, JP;
Abstract
A collision detection device has a weight, which includes an eccentric mass and a metallic plate. The weight is pivoted by a shaft at a position eccentric from the mass barycenter to have a predetermined swing velocity and frequency response. A rotor is fixed to the weight, and contact springs having contacts are provided to exert a resilient force to the weight. When the acceleration caused by the impact of collision acts on the weight, it swings against the spring force, and bounces on a stopper to swing back. The rotor which swings together with the weight causes the contacts on the springs to close at a certain swing angle, producing a collision detection signal. The eccentric mass and the metallic plate may be provided to swing separately from each other depending on the magnitude of acceleration.