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:
May. 21, 1996
Filed:
Jan. 18, 1994
Muneo Nishizawa, Shiga, JP;
Takata Corporation, Tokyo, JP;
Abstract
A mechanical igniter for a gas generator has a weight, a latch lever and a firing pin, which are provided in a casing as movable elements to fire a percussion cap attached to the gas generator in response to acceleration. The mechanical igniter further has a restraint member movably supported in the casing as a safety catch for making the movable elements immovable. The casing and the restraint member are respectively formed with cam surfaces which cooperate with each other to rotate the restraint member about its own axis so that the restraint member is selectively set in a restraint position and a release position. The restraint member has a rotary control portion that is concealed in the casing and has a portion that is engageable by a rotary tightening tool, such as used in an ordinary bolt tightening operation or the like. The restraint member is rotated by engaging the rotary tightening tool with the rotary control portion of the restraint member and turning the tool. As a result of the rotation, the restraint member is displaced from the restraint position to the release position and set in the latter position by the cooperation of the cam surfaces. Thus, the movable elements are released from the immovable state, thereby allowing the igniter to fire the percussion cap in response to acceleration.