String and cable silencers for archery bows

Details String and cable silencers for archery bows String and cable silencers for archery bows

2002-04-02

2004-07-13

Ricci, John A. (Department: 3712)

Mechanical guns and projectors

Element

For archery projector

Reexamination Certificate

active

06761158

ABSTRACT:

THE FIELD OF THE INVENTION
The present invention is to improve upon previous devices for reducing the sound generated upon the release of an arrow from an archery bow, or compound archery bow.
THE BACKGROUND OF THE INVENTION
It is widely known that the archery bow string and to a lesser degree the compound archery bow cables produce a very distinct sound upon the release of the arrow.
This sound is due to the violent harmonic vibrations that take place when the arrow is departing from the string, and to a lesser degree the harmonic vibrations imposed upon the compound cables.
Previous string silencers have been designed to dampen the vibrations of the bowstring, and if possible have probably been used to help silence the compound cables as well.
The other string silencers that are widely available today are;
1) The “puff string silencers”, U.S. Pat. No. 4,080,951.
2) The “tarantula string silencers”, U.S. Pat. No. 5,016,604.
3) The “Sims string leech”, U.S. Pat. No. 6,237,584.
4) The “cat whisker silencers”.
None of the available silencers that are in use today can completely eliminate the string and cable noise, but they can drastically reduce the sound created when the arrow is released from the string. The listed string silencers each have there drawbacks and limitations.
1) The “puff string silencers”, U.S. Pat. No. 4,080,951, can absorb water and therefore increase in weight, thus reducing the performance in arrow speed and accuracy. The yarn used in the “puff string silencers” can unravel and become frayed, and under the continued stresses of shooting the bow or crossbow, the tiny strands of yarn could dislodge.
2) The “tarantula string silencers”, U.S. Pat. No. 5,016,604, are constructed of strips of polyester fleece, which although will not absorb water, is a much less effective string silencer than the last two, “Sims string leech” U.S. Pat. No. 6,237,584 and “cat whisker silencers”.
3) The “Sims string leech”, U.S. Pat. No. 6,237,584, have two arms that run opposite directions, but parallel along the bow string. The “Sims string leech” is constructed from a material called NAVCOM, a rubber like material that is also used by Sims in U.S. Pat. No. 5,362,046. Although the “Sims string leech” is highly effective in reducing the string vibration and the consequent sound, it has been observed as having a relatively short life on modern high performance compound archery bows.
4) The “cat whisker silencer”, is a cluster of live rubber strings which are fastened at their center to the bow string by means of a string. They are generally viewed as the best string silencer for reducing noise and vibration, but since the cat whiskers are thin rubber strands they are more susceptible to dry rot, ultraviolet light, and ozone decay. They need to be replaced every year.
There still exists a need for a better archery and crossbow string and cable silencer, that can achieve the objectives of such devices, while avoiding the drawbacks of previously designed string silencers.
SUMMARY OF THE INVENTION
The present invention discussed herein is certainly a new and effective string and cable silencer. It is unlike the previous inventions in that it can easily be attached to both conventional archery bow strings and cables as well as split archery bow strings and cables by the use of common zip ties. It appears to have superior noise and vibration dampening characteristics with a very small reduction in initial arrow velocity commonly associated with other string silencers.


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patent: RE36555 (2000-02-01), Tentler
patent: 6237584 (2001-05-01), Sims
patent: 6264522 (2001-07-01), Dickson
patent: 6446620 (2002-09-01), Summers et al.

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