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:
Aug. 15, 1989
Filed:
Jul. 13, 1987
Griffith S Evans, Westmont, IL (US);
Scot, Incorporated, Downers Grove, IL (US);
Abstract
An initiator device for activating air crew escape systems comprising a housing of elongate cylindric configuration defining a central chamber having a propellant gas discharge bore at one end and being open at the other end for receiving and static pressure mounting in the central chamber a pyrotechnic cartridge that is held in mounted position by a separate screw threaded head screw threadedly mounted in the housing open end, with the cartridge including a metallic body defining a compression chamber having at the portion of same that is engaged by the housing head, and having a piston received in the compression chamber that is frangibly secured to the cartridge body; the cartridge body also defines a separate pyrotechnic material receiving chamber that is open to the body compression chamber with a column of suitable pyrotechnic materials, tailored in light of the job to be done by the initiator, being mounted in the pyrotechnic material receiving chamber having a head end and terminating with an initiator pressure propellant charge, the initiator device head being formed and mounted, for driving the cartridge piston across the cartridge compression chamber to ignite by adiabatic compression the head end of pyrotechnic column contained in the cartridge, whereby on ignition of the propellant charge, the initiator activates air crew escape systems.