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Pneumatic cocking device

  • US 7,017,568 B1
  • Filed: 05/06/2003
  • Issued: 03/28/2006
  • Est. Priority Date: 05/06/2003
  • Status: Active Grant
First Claim
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1. A crossbow comprising:

  • a compressed gas dispenser;

    a pneumatic cylinder and piston assembly;

    a string pick up arm capable of linear translation comprising a pivoted connection to pick up arm body such that said pick up arm is capable of engagement with said bowstring when pivoted upward as well as capable of sufficiently pivoting down such that said bowstring and said pick up arm do not engage;

    said gas dispenser fluidly connected to said pneumatic cylinder;

    said string pick up arm operatively connected to said piston such that translation of said pick up arm and piston caused by a pressure rise in said pneumatic cylinder by introduction of high pressure gas from said gas dispenser forces said piston to move in the cylinder as well as translate said connected string pick up arm drawing a bowstring a sufficient distance allowing said drawn bowstring into engagement with the firing sear mechanism.

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