Mechanical guns and projectors – Element – For archery projector
Reexamination Certificate
2000-01-06
2001-10-09
Ricci, John A. (Department: 3712)
Mechanical guns and projectors
Element
For archery projector
C267S136000
Reexamination Certificate
active
06298842
ABSTRACT:
TECHNICAL FIELD OF THE INVENTION
The present invention relates to archery bows, and more particularly, to novel, improved bows with accessories which improve accuracy by modifying the decay pattern of the vibrations set up in the bow when an arrow is released.
BACKGROUND OF THE INVENTION
The release of an arrow from even a modern bow sets up significant vibrations in the limbs of the bow, and these are in large part transmitted to the riser of the bow and from there to the archer's hand. The result is a significant adverse effect on accuracy.
A variety of stabilizers have been employed in an effort to reduce the adverse effect of this vibration on the accuracy of the bow. At best, such devices have proved to be of limited value.
SUMMARY OF THE INVENTION
There have now been invented and disclosed herein certain new and novel vibration decay pattern modifiers which significantly reduce the adverse effect on accuracy of the vibrations generated when an arrow is released. Different ones of these decay pattern modifiers are fixed to the limbs of the bow and/or to the end of the hydraulic stabilizer typically attached to the riser of a compound bow.
Decay pattern modifiers in accord with the principles of the present invention are fabricated from a soft visco-elastic polymer and have a mushroom-like configuration provided by a head and an integral stem. The head and stem of the decay pattern modifiers are so configured and dimensioned that: (1) the modifier can vibrate or oscillate toward and away from the longitudinal axis of the modifiers at any and all locations around the 360° circumference of the modifier, and (2) peripheral portions of the decay pattern modifier head can oscillate in directions generally parallel to the longitudinal modifier axis at any (and all) locations around the circumference of the decay pattern modifiers. Motions are also set up in the material of the damper. The combined result of these motions is a wiggle and jiggle which significantly alters the pattern of vibrations set up in the bow when an arrow is released, effectively minimizing the effect on accuracy of those vibrations
Yet another, particularly important advantage of the present invention is that there is only a small, two foot per second (typical) loss in arrow velocity appurtenant to the use of decay pattern modifiers embodying its principles.
Another important attribute of the novel decay pattern modifiers disclosed herein is that they are light and small enough that they do not interfere with the normal drawing of the bow string and subsequent release of an arrow.
Other important objects, features, and advantages of the invention will be apparent to the reader from the foregoing and the appended claims and as the ensuing detailed description and discussion of the invention proceeds in conjunction with the accompanying drawing.
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patent: 5362046 (1994-11-01), Sims
patent: 5595168 (1997-01-01), Martin
patent: 5720267 (1998-02-01), Walk
patent: 5937843 (1999-08-01), Troncoso
Multer Richard D.
Ricci John A.
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