US2004077440A1PendingUtilityA1

Archery bow limb construction with or without built in limb dampeners

Assignee: LEN GREGORY KRONFELDPriority: Oct 18, 2002Filed: Oct 18, 2002Published: Apr 22, 2004
Est. expiryOct 18, 2022(expired)· nominal 20-yr term from priority
Inventors:Len Kronfeld
A63B 60/54A63B 2244/04F41B 5/1426
16
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Claims

Abstract

In the preferred embodiment original built in dampeners are created by cutting slits in the bow limbs and creating areas that will flex in the opposite direction of the limbs during and after the release of the arrow. This counter balancing motion will cancel vibration of the limb and bring the limb to a much faster stop. The areas are also fitted with weights/absorbers made out of suitable materials in order to fine tune vibration absorption to a specific limb/bow. In another embodiment internal portions of the limb are completely removed so that it reduces the weight of the limb and gives it the look of a spit limb (limb comprised of two separate vertical parts joined by limb pocket and the cam pin) without sacrificing stability of the solid limb. The apertures formed in the limb can be also fitted with internal absorbers/dampeners made out of elastomer.

Claims

exact text as granted — not AI-modified
1 . A dampening device which is an intrinsic part of the bow limb construction which, in the preferred embodiment is created by making slits in the bow limbs, which results in isolating the areas that will flex in the opposite direction during and after the release of the arrow.  
     
     
         2 . The device as recited in  claim 1 , wherein said device further comprises an isolated area (s) formed by making a slit (s) in the limb where the formed area is still attached to the limb.  
     
     
         3 . The device as recited in  claim 1 , wherein said device further comprises an isolated area (s) formed by making a slit (s) in the limb where the formed area is still attached to the limb with an elastomeric dampener affixed to the formed area.  
     
     
         4 . The device as recited in  claim 1 , wherein said device further comprises an isolated area (s) formed by making a slit (s) in the limbs or forming it independently where the formed area is attached to the limbs of the bow, by the limb pocket.  
     
     
         5 . The device as recited in  claim 4 , wherein said device further comprises an isolated area (s) formed by making a slit (s) in the limbs, or forming it independently, where the formed area is attached to the limbs of the bow, by means of elastomeric profile/channel.  
     
     
         6 . The device as recited in  claim 4 , wherein said device further comprises an isolated area (s) Completely removed out of limbs and forming apertures.  
     
     
         7 . The device as recited in  claim 4 , wherein said device further comprises an isolated area (s) completely removed out of limbs and forming apertures. Those apertures could be fit with the vibration dampeners/weights made out of suitable elastomeric materials in the shape of loosely fit grommets or concentric spring like weighted membranes  
     
     
         8 . An archery bow dampening device, said device comprising: counter-balance means for offsetting the amplitude of the longitudinal and torsional vibrational forces caused by the release of the archery arrow; and energy absorbing means for absorbing the energy of the vibratory oscillations through expansion and contraction of said energy absorbing means, said energy absorbing means being juxtapose to said counter-balance means, whereby said counterbalance means oscillates at a natural frequency out of phase of the natural frequency of the limbs, parts of the limb, of the archery bow until said energy absorbing means negating the energy stimulated by the release of the archery arrow, thereby accelerating the decay of the vibration amplitude.

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