Patent ID: 6606984
Filing Date: 2003-08-19
Classification: F41B

Abstract:
A pneumatic time delayed bowstring release apparatus, comprising:a housing; a pair of elongated members pivotally mounted within said housing, wherein each member has a first end and a second end; means for biasing said first ends of said elongated members apart; a wedge slidably mounted within said housing, wherein said wedge is operable to slidably engage said second ends of said elongated members and thereby pivot said elongated members such that said first ends of said elongated members abut; a cylindrical air chamber having a first end, a second end, a purge valve, and an air valve for controlling air flow into the chamber at a predetermined rate; a piston slidably mounted within said air chamber, wherein said piston has a first end extending through the first end of said air chamber and a second end that forms an air tight seal with internal sidewalls of said air chamber, wherein said piston is operable to purge air from said air chamber as said second end of said piston is urged towards said second end of said air chamber; means for biasing said second end of said piston towards said first end of said air chamber; and a trigger pivotally mounted within said housing, wherein said trigger has a first end and a second end, wherein said first end of said trigger is attached to said first end of said piston and is operable to urge said second end of said piston towards said second end of said air chamber and said second end of said trigger is operable to engage said wedge and thereby urge said wedge into engagement with said second ends of said elongated members.