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. 27, 1993
Filed:
Jan. 06, 1992
Brian K Hamilton, Littleton, CO (US);
Ronald J Butt, Littleton, CO (US);
Brent A Parks, Englewood, CO (US);
OEA, Inc., Aurora, CO (US);
Abstract
An ignition assembly in a motor vehicle inflatable safety system is provided, preferably to be used with a projectile. In one embodiment, the ignition assembly includes an actuation piston and an activator, such as a percussion primer(s) and an ignition material, which are separated by a retention pin. When a sufficient force is exerted on the actuation piston, the retention pin fails such that the actuation piston moves and impacts the percussion primer(s) to ignite the propellant within the gas generator. The resulting propellant gases are thereafter provided in a predetermined direction(s). Advantageously, a check valve-like device is employed to substantially reduce the flow of propellant gases in a direction other than the predetermined direction(s). The preferred projectile also includes a body that has a smaller dimension than the projectile piercing head when the projectile is used to separate a closure disk to release stored, pressurized gases in addition to activating the gas generator. In this case, the preferred projectile facilitates the controlled separation of any closure disk used to retain pressurized, stored gases used by the . inflator in addition to the propellant gases.