GunClaims
Weekly firearms and ammunition patent grants.
Nov 11, 2025

US12467712 - Cam adjuster for compound bow

In a compound bow, an axle, having threaded ends, is pushed through a hole in a cam. Cam spacers, having internal threads, are screwed onto the ends of the axle until the ends of the cam spacers abut the cam. The cam can rotate freely around the unthreaded middle portion of the axle. The ends of the cam spacers go into holes in limb brackets attached to the bow's resilient limb ends. In one embodiment, the ends of the cams are threaded, and a nut is tightened over the thread to shift the cam spacers and cam left or right relative to the limb brackets. In another embodiment, the cam spacers and limb brackets are threaded, and turning the cam spacer shifts the cam left or right. In both embodiments, the cam position is precisely adjusted and very stable.

The patent describes a cam adjuster for a compound bow that allows for precise lateral adjustment of the cam position using threaded cam spacers secured to an axle. This design enhances the stability and functionality of the bow by enabling easy repositioning of the cam relative to the limb brackets.

Claim 1

1 . A compound bow comprising: a cam; a resilient limb having a space for mounting the cam; a first limb bracket and a second limb bracket connected to the resilient limb; an axle extending through the cam the axle having two opposing externally threaded ends; a first cam spacer and a second cam spacer, each having internal threads that are screwed onto respective externally threaded ends of the axle to secure the axle to the first cam spacer and the second cam spacer, a first end of the first cam spacer abutting a first side of the cam, and a second end of the second cam spacer abutting a second side of the cam, wherein the first cam spacer has a first external thread and the second cam spacer has a second external thread; and a third end of the first cam spacer extending through the first limb bracket, and a fourth end of the second cam spacer extending through the second limb bracket, whereby the cam is laterally moved within the space in the limb by shifting the first cam spacer and the second cam spacer with respect to the first limb bracket and the second limb bracket. a cam; a resilient limb having a space for mounting the cam; a first limb bracket and a second limb bracket connected to the resilient limb; an axle extending through the cam the axle having two opposing externally threaded ends; a first cam spacer and a second cam spacer, each having internal threads that are screwed onto respective externally threaded ends of the axle to secure the axle to the first cam spacer and the second cam spacer, a first end of the first cam spacer abutting a first side of the cam, and a second end of the second cam spacer abutting a second side of the cam, wherein the first cam spacer has a first external thread and the second cam spacer has a second external thread; and a third end of the first cam spacer extending through the first limb bracket, and a fourth end of the second cam spacer extending through the second limb bracket, whereby the cam is laterally moved within the space in the limb by shifting the first cam spacer and the second cam spacer with respect to the first limb bracket and the second limb bracket.

Google Patents

https://patents.google.com/patent/US12467712

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12467712