Glass breaking device

摘要

A device for breaking glass, arranged to be mounted on a pane of a breakable substrate, and being actuatable to break the pane. In one embodiment, the device comprises a base, a plunger moveable relative the base and a pin extending from and axially moveable relative the plunger, wherein the plunger is moveable relative the base from a retracted to an extended position so when the base is placed against a first pane, a distal end of the pin strikes and breaks the first pane, and the pin is moveable relative the plunger from a retracted position to an extended position, with the plunger in its extended position, such that the distal end of the pin strikes and breaks a second pane parallel to the first pane. Preferably, the plunger and pin are biased to an extended position each by a biasing means.

主权项

1. A glass-breaking device, arranged to be mounted on a breakable substrate having a first pane and a second pane, and actuatable to break the panes of the breakable substrate, the device comprising:
a base having a surface configured to be placed against the first pane; a plunger moveable with respect to the base from a retracted position in which the plunger is spaced apart from the surface of the base to an extended position in which the plunger is closer to the surface of the base relative to the plunger's retracted position; a first biasing element configured to bias said plunger toward said plunger's extended position, said first biasing element having a first spring rate; a pin having a distal end extending from said plunger and configured to strike the breakable substrate, wherein said pin is axially moveable from a retracted position to an extended position with respect to the plunger when said plunger is in said extended position; a second biasing element configured to bias said pin toward said pin's extended position, said second biasing element having a second spring rate which is less than the first spring rate of said first biasing element; wherein when said base surface is placed directly against the first pane of the breakable substrate, said plunger is actuatable to said plunger's extended position, whereby said distal end of said pin passes through the base and strikes and breaks the first pane of breakable substrate, and wherein when said plunger reaches said plunger's extended position, said pin moves to said pin's extended position, whereby said pin passes further through the base and said distal end of said pin strikes and breaks the second pane of breakable substrate that is parallel to and spaced from the first pane of breakable substrate.