Force multiplying type archery bow

Claim 2

An archery bow comprising a member adapted to be grasped by an archer and having opposite ends, a limb pivotally attached to said member at a point intermediate its length, said limb having at least one free end, a bow string attached to said limb, whereby upon drawing said bow string the limb will pivot relative to said member, means for reducing the pull poundage of said bow between undrawn and fully drawn positions of said bow string whereat each said limb is pivoted and lesser force is required to maintain the reduced poundage than that required at the fully drawn position of the bow absent said reducing means, means for imparting a biasing force against an end of said limb most adjacent said member for urging said bow limb in a direction toward the undrawn position of said bow sTring, and said force imparting means is an elongated cantilever spring element secured to said member which pushingly bears against said limb end normally biasing the same toward its undrawn position.

Claim 3

The archery bow as defined in claim 1 including an elongated element extending between said limb and said member, and means on said element variably limiting the angular displacement of the terminal free end of limb relative to said member in the undrawn position of said string.

Claim 4

The archery bow as defined in claim 1 including a pulley carried by each of said limbs remote from said member, and said bow string being at least partially entrained about said pulleys and attached to said limbs.

Claim 5

The archery bow as defined in claim 1 wherein an anti-friction member carried by said limb end bears against said member.

Claim 6

The archery bow as defined in claim 3 including a pulley carried by said limb remote from said member, and said bow string being at least partially entrained about said pulley and attached to said limb.

Claim 7

The archery bow as defined in claim 1 including a pulley carried by said limb remote from said member, and said bow string being at least partially entrained about said pulley and attached to said limb.

Claim 8

An archery bow comprising a member adapted to be grasped by an archer and having opposite ends, a limb pivotally attached to each of said member ends, each limb having first and second ends respectively removed from and adjacent to the associated member end, a bow string spanning the distance between said limb first ends whereby upon drawing said bow string said limbs will pivot relative to said member, means for reducing the pull poundage of said bow between undrawn and fully drawn positions of said bow string whereat said limbs are pivoted relative to said member and a lesser force is required to maintain the reduced poundage than that required at the fully drawn position of the bow absent said reducing means, each limb being pivoted between its ends to said member, and means for imparting a biasing force against a free terminal free end of each limb during pivoting of said limbs for urging said limbs in a direction toward an undrawn position of said bow string, said force imparting means comprising an elongated cantilever spring element secured to said member which pushingly bears against said limb end normally biasing the same toward its undrawn position.

Claim 9

An archery bow comprising a member adapted to be grasped by an archer and having opposite ends, a limb pivotally attached to each of said member ends, each limb having first and second ends respectively removed from and adjacent to the associated member end, a bow string spanning the distance between said limb first ends whereby upon drawing said bow string said limbs will pivot relative to said member, means for reducing the pull poundage of said bow between undrawn and fully drawn positions of said bow string whereat said limbs are pivoted relative to said member and a lesser force is required to maintain the reduced poundage than that required at the fully drawn position of the bow absent said reducing means, each limb being pivoted between its ends to said member, and means for imparting a biasing force against a free terminal free end of each limb during pivoting of said limbs for urging said limbs in a direction toward an undrawn position of said bow string, said force imparting means comprising an elongated cantilever spring element secured to said member which pushingly bears against said limb end normally biasing the same toward its undrawn position.

Claim 10

The archery bow as defined in claim 7 wherein each force imparting means is a deflectable resilient element carried by said member against which bears an end of each associated limb.

Claim 11

The archery bow as defined in claim 6 including roller means for reducing friction disposed between each limb and said member, and each roller means being in engagement with one of said deflectable resilient elements.

Claim 12

The archery bow as defined in claim 3 wherein each roller means is carried by the second end of each limb.

Claim 13

The archery bow as defined in claim 7 including means for preventing overpivoting of each limb beyond a predetermined desired fully drawn position of said bow string.

Claim 14

The archery bow as defined in claim 7 including a pulley carried by each limb first end, a pair of pulleys carried by said member, and said bow string is entrained at least partially about each pulley with ends thereof fastened to said limbs.