Frederick R Arnett

US Patent:

49036777, Feb 27, 1990

Filed:

Nov 2, 1988

Appl. No.:

7/266066

Inventors:

David E. Colley - Loganville GA
Donald G. Fain - Tucker GA
Frederick R. Arnett - Decatur GA

International Classification:

F41B 500

US Classification:

124 23R

Abstract:

An archery bow design in which at least one flat wound power spring is mounted on a frame and is connected through an eccentric wheel or cam and a pulley system to a bow string so that the action of drawing back the bow string causes the coil spring to be wound up, storing energy. The eccentric wheel or cam and the pulley system provide a mechanical advantage whereby a relatively small force is required to draw the bow and wind up the power spring, and a relatively higher recoil velocity is obtained when the string is released.

US Patent:

50544632, Oct 8, 1991

Filed:

Dec 28, 1989

Appl. No.:

7/458415

Inventors:

David E. Colley - Loganville GA
Donald G. Fain - Tucker GA
Frederick R. Arnett - Decatur GA

International Classification:

F41B 500

US Classification:

124 256

Abstract:

An archery bow design in which a pair of flexible limbs are secured on opposite ends of a riser that defines a hand grip or handle, and wherein recoil assemblies at opposite ends of the riser are connected with a bow string to bias the string in a first direction for propelling an arrow. In one form of the invention, a recoil cable extends from the free end of each limb to a cam at the opposite end of the riser, and the cam is connected for rotation with a take-up spool for storing cable. The bow string is connected with the take-up spool, whereby the take-up spool is rotated when the bow string is drawn, thereby rotating the cam and deflecting the limb to store energy for propelling an arrow. In another form of the invention, the recoil cables are omitted and flat wound coil springs are connected with the cam so that when the bow string is drawn the flat wound coil springs store energy. The cam provides a let-off feature whereby a relatively small force is required to draw the bow and hold it in a fully drawn position, and a relatively higher recoil velocity is obtained when the string is released.