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String guide for a bow

DC
  • US 9,879,936 B2
  • Filed: 10/17/2016
  • Issued: 01/30/2018
  • Est. Priority Date: 12/16/2013
  • Status: Active Grant
First Claim
Patent Images

1. A bow comprising:

  • first and second bow limbs attached to a riser;

    a first cam mounted to the first bow limb and rotatable around a first axis, the first cam comprising a first draw string journal having a first plane of rotation perpendicular to the first axis, a first upper power cable take-up journal extending in a direction perpendicular to the first plane of rotation of the first draw string journal, and a first lower power cable take-up journal extending in an opposite direction perpendicular to the first plane of rotation;

    a second cam mounted to the second bow limb and rotatable around a second axis, the second cam comprising a second draw string journal having a second plane of rotation perpendicular to the second axis, a second upper power cable take-up journal extending in a direction perpendicular to the second plane of rotation of the second draw string journal, and a second lower power cable take-up journal extending in an opposite direction perpendicular to the second plane of rotation;

    a draw string received in the string guide journals and secured to the first and second cams, wherein the draw string unwinds from the string guide journals as it translates from a released configuration to a drawn configuration; and

    upper and lower power cables received in the upper and lower power cable take-up journals on each of the first and second cams;

    wherein as the bow is drawn from the released configuration to the drawn configuration the upper and lower power cables wrap onto the respective upper and lower power cable take-up journals and are displaced along the first and second axes relative to the first and second planes of rotation of the first and second draw string journals.

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