Pyrotechnic drop mechanism for power tools

Details Pyrotechnic drop mechanism for power tools Pyrotechnic drop mechanism for power tools

2009-11-23

2011-12-13

Alie, Ghassem (Department: 3724)

Cutting

With randomly actuated stopping means

Responsive to tool detector or work-feed-means detector

C083S058000, C083S471300, C083SDIG002, C083S477200

Reexamination Certificate

active

08074546

ABSTRACT:
A saw includes a surface defining an opening therein, a plate structure configured to be attached to the saw below the surface, and an arm attached to the plate structure about a first shaft. A blade is configured to be engaged with the arm at a location spaced from the first shaft. The blade extends through the opening when the saw is in a normal operating position. The saw includes a firing mechanism including a barrel end portion having a bore defined therein and an extendable piston at least partially positioned within the bore. The barrel end portion is attached to the plate structure. The extendable piston engages the arm during its extension and causes the arm to pivot about the first shaft when the firing mechanism is activated by an activation signal. The pivoting of the arm causes the blade to be moved downwardly below the surface.

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