Aug 19, 2025

US12392575 - Crossbow with spiral wound cam system

A crossbow includes a frame, first and second limbs, first and second cams, a drawstring, and first and second power cables. The frame includes a first side and a second side. The frame defines a projectile axis. The first limb is coupled to the first side and the second limb coupled to the second side. The first cam is coupled to the first side and configured to rotate about a first cam axis that is substantially parallel to the projectile axis. The second cam is coupled to the second side and configured to rotate about a second cam axis that is substantially parallel to the projectile axis. The drawstring is engaged with the first cam and the second cam. The first power cable is engaged with the first cam and the first limb. The second power cable engaged with the second cam and the second limb.

The patent describes a crossbow featuring a frame with two flexible limbs and a cam system designed to enhance the draw and release mechanism. The first and second cams rotate about axes parallel to the projectile axis, with a drawstring and power cables integrated into the design for improved functionality.

Claim 1

  1. A crossbow, comprising: a frame including a first frame side and a second frame side, the frame defining a projectile axis; a first flexible limb coupled to the first frame side and a second flexible limb coupled to the second frame side; a first cam coupled to the first frame side and configured to rotate about a first cam axis that is substantially parallel to the projectile axis; a second cam coupled to the second frame side and configured to rotate about a second cam axis that is substantially parallel to the projectile axis, a drawstring engaged with the first cam and the second cam; and a first power cable engaged with the first cam and the first flexible limb; and a second power cable engaged with the second cam and the second flexible limb. a frame including a first frame side and a second frame side, the frame defining a projectile axis; a first flexible limb coupled to the first frame side and a second flexible limb coupled to the second frame side; a first cam coupled to the first frame side and configured to rotate about a first cam axis that is substantially parallel to the projectile axis; a second cam coupled to the second frame side and configured to rotate about a second cam axis that is substantially parallel to the projectile axis, a drawstring engaged with the first cam and the second cam; and a first power cable engaged with the first cam and the first flexible limb; and a second power cable engaged with the second cam and the second flexible limb.

Google Patents

https://patents.google.com/patent/US12392575

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12392575

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