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. 23, 1991
Filed:
May. 29, 1990
Tatsuo Tada, Fujisawa, JP;
Katsuhisa Tonooka, Fujisawa, JP;
Nippon Seiko Kabushiki Kaisha, Tokyo, JP;
Abstract
A collision sensor adapted to sense acceleration applied thereto in the event of collision of a vehicle and actuate an occupant protective system. A rotary element has an outer peripheral surface thereof provided with a predetermined curvature characteristic. A biasing device generates a biasing force for biasing the rotary element to a predetermined reference position. An inertial mass is responsive to acceleration acting thereupon for causing the rotary element to rotate from the predetermined reference position against the biasing force. A switch is operable to generate an output signal when the rotary element has rotated by a predetermined angle from the predetermined reference position. The biasing force of the biasing means is modulated in accordance with the predetermined curvature characteristic of the outer peripheral surface of the rotary element as the rotary element rotates.