Mechanical guns and projectors – Miscellaneous
Reexamination Certificate
1999-11-22
2001-04-24
Ricci, John A. (Department: 3712)
Mechanical guns and projectors
Miscellaneous
C124S086000
Reexamination Certificate
active
06220235
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a nock travel indicator and more particularly pertains to a bow tuning apparatus which allows a user to map the travel of a nock upon a bow string.
2. Description of the Prior Art
The use of bow tuning devices is known in the prior art. For example, U.S. Pat. No. 5,121,736 to Hawk discloses an archery bow sighting apparatus for use in effecting vertical alignment of the bow with the bow string. Furthermore, U.S. Pat. No. 4,993,397 to Cryar discloses an apparatus for calibrating archery bows. The apparatus allows the nocking point and other features to be adjusted to optimal positions. U.S. Pat. No. 2,763,156 to Garigal discloses a bow pull indicating machine for use in indicating the force and movement of a bow string attached to a resilient bow. The use of bow presses is also known in the art. For example, U.S. Pat. No. 5,222,473 to Lint; U.S. Pat. No. 5,433,186 to Corwin; and U.S. Pat. No. 5,370,103 to Desselle each disclose bow press devices for use in securing a bow during adjustment and/or maintenance.
Finally, applicant's prior patent, U.S. Pat. No. 5,954,041 entitled “Bow Calibrating Device”, the contents of which are incorporated herein by reference, discloses a device for calibrating the draw of an archery bow.
Although the devices described in conjunction with the above-referenced patents achieve their individual objectives and requirements, none of them pertain to a bow tuning apparatus with a nock travel indicator. In this respect, the bow tuning apparatus of the present invention substantially departs from those of the prior art.
BRIEF SUMMARY OF THE INVENTION
The use of bow and arrows has increased in popularity over the years. This popularity comes both in the form of target shooting and bow hunting. The most popular forms of bows today are compound bows. These bows provide an inherent mechanical advantage which reduces the pull force required at full draw. This mechanical advantage, in turn, results in increased accuracy. Those familiar with compound bows will understand the necessity to keep such bows properly calibrated. Improperly calibrated bows result in loss of accuracy and premature wear of the pulleys and wheels. Premature degradation of the bow limbs can also occur as a result of improper calibration. The present invention overcomes the problems inherent in keeping a bow properly calibrated by providing a tuning apparatus which includes a visual nock travel indicator. To this end, the present invention essentially comprises a bow tuning apparatus with a nock travel indicator. The apparatus has, as a first component, an outer frame with measuring indicia formed along the length of the outer frame. A second component is an inner frame slidably positioned within the outer frame. A first winch assembly is secured along a length of the outer frame. Cabling is secured about the first winch and has a distal end secured to the inner frame. In this manner, rotation of the winch causes inward movement of the inner frame with respect to the outer frame. A second winch assembly is secured along a length of the outer frame. Cabling is secured about the second winch assembly. An implement securing means is coupled to the distal end of the cabling of the second winch assembly. Further, a writing implement is positioned within the implement securing means. Lastly, a rigid sheet is removably coupled to the outer frame assembly.
Furthermore, it is an object of the present invention to provide an apparatus whereby a user can easily calibrate a bow.
It is a further object of the present invention to provide a device whereby the travel of the bow string can be recorded for subsequent reference.
An even further object of the present invention is to provide a calibrating device which employs winches and pulleys such that the bow can be drawn with minimal user energy.
It is still yet another object of the present invention to provide a device whereby the initial draw of the bow can be recorded, both in terms of distance and in stress.
Another object of the present invention is to provide a writing implement interconnected with the peak of the bow string such that the travel of the bow string can be recorded and non-linear bow paths may be detected.
These objects of the present invention can be achieved by providing a bow tuning apparatus with a nock travel indicator. The bow tuning apparatus has, as a first component, a mounting platform with first and second sides and a central extent. First and second deflection measuring apparatuses are located on the first and second sides of the platform respectively. An outer frame is secured to the central extent of the mounting platform. Measuring indicia is formed along the length of the outer frame. An inner frame is slidably positioned within the outer frame. The inner frame has a hollow interior. A bow press with associated rollers integral with a forward extent of the inner frame is also provided. The fourth component of the present invention is a first winch assembly secured along a length of the outer frame. A first pulley is rotatably secured at a rearward extent of the outer frame. Cabling is secured about the first winch, the first pulley, and extends within the outer frame with a distal end secured to the interior of the inner frame. In this manner, rotation of the winch causes inward movement of the inner frame with respect to the outer frame. A second winch assembly is secured along a length of the outer frame. A second pulley is secured to the rearward extent of the outer frame. Cabling is secured about the second winch assembly and the second pulley. A strain measuring device is coupled to a distal end of the cabling. An implement securing means is secured to the strain measuring device with a writing implement positioned within the securing means. Lastly provided is a sheet of plexiglass which is removably coupled to the outer frame assembly. A sheet, which has graduations marked thereon, is removably coupled to the plexiglass such that movement of the writing implement corresponds with the movement of a bow string being measured and wherein movement of the writing implement makes marks upon the sheet.
REFERENCES:
patent: 5222473 (1993-06-01), Lint
patent: 5370103 (1994-12-01), Desselle
patent: 5433186 (1995-07-01), Corwin
patent: 5628300 (1997-05-01), Wallendorff
patent: 5954041 (1999-09-01), Sands
patent: 5983879 (1999-11-01), Gifford
LandOfFree
Bow tuning apparatus with a nock travel indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Bow tuning apparatus with a nock travel indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bow tuning apparatus with a nock travel indicator will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2555332