Safety Glass Breaker

摘要

An automobile safety glass breaker tool is held against an automobile safety glass window and fired to break the window. The tool is armed by sliding a firing pin piston to the rear against a spring and fired by releasing the firing pin piston. The firing pin piston hits a 22 blank cartridge to fire the blank cartridge. The blank cartridge drives a striker piston forward, and a striker point on the striker piston impacts and shatters the automobile safety glass window. The striker point is limited to reach about 0.6 inches forward and out of the tool to prevent injury to a user.

主权项

1. A window breaking tool, comprising:
a striker piston housing assembly including a striker housing cap fixedly attached to a striker housing, the striker housing cap including a rearward facing striker housing stop surface in an interior of the striker piston housing assembly; a handle extending back from the striker piston housing assembly; a striker piston sliding in the striker piston housing assembly, the striker piston including;
a first cylindrical portion sliding axially in the striker housing cap;a second cylindrical portion sliding axially in the striker housing, the second cylindrical portion having a larger diameter than the first cylindrical portion; anda forward facing striker piston stop surface between the first cylindrical portion and the second cylindrical portion, the striker piston stop surface including a flat annular ring axially aligned with the striker housing stop surface to terminate forward movement of the striker piston by contact of the striker piston stop surface with the striker housing stop surface; a striker extending forward from the striker piston, at least 0.02 inches of the striker exposed when the striker piston stop surface resides against the striker housing stop surface; a blank cartridge stop configured to position a blank cartridge in a blank cartridge position between the striker piston housing assembly and the handle, the blank cartridge facing the striker piston; a striker chamber between the blank cartridge position and the striker piston; and a firing pin configured to strike the blank cartridge to fire the blank cartridge to create pressure in the striker chamber to propel the striker piston carrying the striker forward.