Compact Crossbow with Improved Efficiency
First Claim
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1. A compound crossbow comprising:
- a stock having a butt end and a fore end, said stock supporting a barrel, a hand grip, a release mechanism including a trigger, and a sight mount;
a riser attached to the fore end of the stock and having a center section providing a mounting for an arrow rest;
an arrow rest attached to the mounting;
a pair of limbs mounted to the riser, each limb having a proximal end connected to the riser and a distal end terminating at a tip;
a pair of idler spools, one mounted at each limb tip;
a pair of pockets mounted to the riser, the proximal end of each limb being pivotally mounted in a respective one of said pockets;
a limb bolt anchor pivotally connected to the riser by respective pylons adjacent each limb pocket;
an adjusting bolt adjustably connecting each limb pocket to its respective limb bolt anchor whereby bowstring tension can be altered or eliminated;
a pair of pylons, each comprising a pair side plates mounted on opposite sides of said riser;
a pair of cam and intermediate spool assemblies, each supported by a respective one of said pylons between said plates; and
a synchronization system constraining the cams to rotate in unison.
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Abstract
A “cross-over” compound crossbow includes a stock and barrel assembly attached to a horizontally mounted compound bow. The compound bow component is similar to that of U.S. Pat. No. 7,047,958 and includes an alternative arrow support system to achieve higher arrow velocity at a reduced draw weight. The crossover compound bow also provides draw weight adjustability and positive cam synchronization.
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Citations
11 Claims
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1. A compound crossbow comprising:
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a stock having a butt end and a fore end, said stock supporting a barrel, a hand grip, a release mechanism including a trigger, and a sight mount; a riser attached to the fore end of the stock and having a center section providing a mounting for an arrow rest; an arrow rest attached to the mounting; a pair of limbs mounted to the riser, each limb having a proximal end connected to the riser and a distal end terminating at a tip; a pair of idler spools, one mounted at each limb tip; a pair of pockets mounted to the riser, the proximal end of each limb being pivotally mounted in a respective one of said pockets; a limb bolt anchor pivotally connected to the riser by respective pylons adjacent each limb pocket; an adjusting bolt adjustably connecting each limb pocket to its respective limb bolt anchor whereby bowstring tension can be altered or eliminated; a pair of pylons, each comprising a pair side plates mounted on opposite sides of said riser; a pair of cam and intermediate spool assemblies, each supported by a respective one of said pylons between said plates; and a synchronization system constraining the cams to rotate in unison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A compound crossbow comprising:
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a stock having a butt end and a fore end, a riser attached to the fore end of the stock; an arrow rest attached to the riser; a pair of flexible bow limbs mounted to the riser, each limb having a proximal end connected to the riser and a distal end terminating at a tip; a pair of idler spools, one mounted at each limb tip; a bowstring having portions passing over said idler spools; each of the limbs being supported on the riser by a mechanism which permits adjustment of the angularity of the limb with respect to the riser, whereby bowstring tension can be altered or eliminated - View Dependent Claims (11)
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Specification