Patent Publication Number: US-4732135-A

Title: Laterally adjustable arrow rest

Description:
CROSS REFERENCE TO RELATED APPLICATION 
     This application is a continuation-in-part of my earlier application, Ser. No. 482,186, filed Apr. 5, 1983, to issue as U.S. Pat. No. 4,548,188, Oct. 22, 1985. 
    
    
     BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     This invention relates to an arrow rest for an archery box, and more particularly to a laterally adjustable arrow rest with an arrow support that moves away from the fletching upon release of an arrow and automatically returns to its initial position after discharge. The lateral adjustment of the arrow rest may be readily achieved in the field and without the use of tools due to the nature of the mounting of the arrow rest through the handle area of the bow. The entire arrow rest of the present invention may be replaced in the field with assurance of correct positioning and alignment. 
     2. Description of the Prior Art 
     An arrow rest is generally secured to the handle area of an archery box, and often includes a rigid notch or ledge which supports and guides an arrow as it is discharged from the bow. However, rigid arrow rests may introduce an undesirable vertical and horizontal force component to the arrow when the shaft and fletching passes over the arrow rest, causing an unwanted deflection of the arrow and damage to the fletching. 
     Flexible arrow rests which deflect both vertically and horizontally by spring action when the arrow passes over the arrow rest decrease this undesired deflection, as described in U.S. Pat. Nos. 4,074,674, 3,871,352, and 3,935,854. Spring biased arrow rests deflecting in a generally horizontal plane are described in U.S. Pat. Nos. 3,769,956 and 3,828,757. Also, arrow rests may be mechanically deflected away from the arrow when the arrow is shot, as described in U.S. Pat. No. 3,504,659. 
     An arrow may travel laterally with respect to the bow if the arrow rest is not properly aligned on the handle. Prior arrow rests which may be laterally adjusted require the use of tools or are rigid rests, as described in U.S. Pat. Nos. 3,285,237, 3,871,352, 3,232,286 and 3,757,764. A spring-biased plunger for lateral placement of an arrow on a fixed rest is described in U.S. Pat. No. 3,482,563. 
     Prior arrow rests have been secured to the bow handle area with adhesive, screws, or the like, and when replacement of the arrow rest is necessary due to breakage or wear, there is no assurance that the new arrow rest, even if of the same style as the old arrow rest, will be properly positioned for shooting without essentially complete realignment. The prior art does not suggest an arrow rest which may be easily laterally adjusted in the field without the use of tools and provide a movable arrow support arm which automatically returns to its initial position after discharge of the arrow. 
     SUMMARY OF THE INVENTION 
     It is an object of one embodiment of this invention to provide an arrow rest having an arrow support which may be deflected by movement of the shaft and fletching of an arrow and automatically returns to its initial position after discharge of the arrow. 
     Another object of this invention is to provide an arrow rest which may be adjusted laterally without the use of tools. 
     Yet another object of this invention is to provide an arrow rest which may be mounted and remounted in the same position with respect to the bow. 
     Another object of this invention is to provide an arrow rest which may be easily laterally adjusted in the field without tools and provide a deflectable arrow support which automatically returns to its initial position. 
     Still another object of this invention is to provide a laterally adjustable arrow rest wherein complete lateral adjustment can be achieved, that is, all the way to the bow handle without the thickness of a back plate or return mechanism. 
     Yet another object is to provide an arrow rest having an adjustable lateral plunger depression and return action. 
     The above objects are achieved in the present invention by an arrow rest having a receiving sleeve which has a first portion fixedly attachable within a transverse hole in the bow handle and an outer second portion sized to extend outwardly from the bow handle on the side away from the arrow rest when fixedly attached within the hole, the sleeve having a through opening. An elongated mounting means is adapted to fit nonrotatably but freely longitudinally movable within the sleeve through opening. The elongated mounting means has a first end adaptable to receive an arrow support means and an opposite second end extending from the receiving sleeve second portion through opening. An arrow support means is attached to the mounting means first end. An adjustment means engages the second end of the mounting means and the second portion of the receiving sleeve extending outwardly from the bow handle whereby movement of the adjustment means causes longitudinal movement of the mounting means within the receiving sleeve. The arrow support means may be a one-piece biased wire mounted in the end of the mounting means or a flat plate having a pivotable arrow support arm mounted on one side and the plate being removably attachable to a mating mounting attached to the end of the mounting means. 
     An important aspect of this invention is provision of an arrow rest having a pivotable arrow support arm which is moved out of the way by the arrow fletching and automatically returns to its initial position after discharge of the arrow. This is achieved by an elongated mounting means having means for retaining an arrow support wire in pivotable relation and means for retaining bias means for biasing the arrow support wire toward and at an initial predetermined position. A one-piece arrow support wire is provided which may have a generally vertical pivot portion or a pivot portion at up to 45° to the vertical retained in the support wire retaining means and an arrow support portion extending beyond the end of the mounting means. Bias means are retained in the bias means retaining means and upon contacting the bias portion of the arrow support wire biases the bias portion toward a predetermined position. This construction provides an arrow support wire which deflects either horizontally or both horizontally and vertically due to movement of the arrow shaft and fletching across it and automatically returns to its initial position after discharge of the arrow. This invention provides an arrow rest with full lateral adjustment, prior rests requiring thickness for spring mechanism and mounting body preventing lateral adjustment to the bow surface. 
     In one embodiment, pressure on the end of the arrow support mounting means by an arrow urges the mounting means inwardly. The mounting means is returned by spring action. The force opposing urging the mounting means in such depression and return action is adjustable. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The above mentioned and other features of this invention and the manner of obtaining them will become more apparent, and the invention itself will be best understood by reference to the following description of specific embodiments of the invention taken in conjunction with the accompanying drawings, in which: 
     FIG. 1 is a cross-sectional view through a bow handle from the side of the archer showing one embodiment of an arrow rest of this invention; 
     FIG. 2 is a cross-sectional view along line 2--2 in FIG. 1 showing one embodiment of a mounting means and receiving sleeve; 
     FIG. 3 is a cross-sectional view of another embodiment of a mounting means and receiving sleeve; 
     FIG. 4 is a bottom view of a mounting means cap; 
     FIG. 5 is a side view of the mounting means shown in FIG. 1; 
     FIG. 6 is a top, partially sectioned view of the mounting means shown in FIG. 5; 
     FIG. 7 is a side view of another embodiment of a mounting means showing a differently shaped arrow support wire; 
     FIG. 8 is a side sectional view of another embodiment of the adjustment screw cap portion of an arrow rest providing longitudinal biased movement of the mounting means; 
     FIG. 9 is a partial cross-sectional view showing another embodiment of an arrow rest according to this invention; 
     FIG. 10 is a perspective rear view of the mating mounting shown in FIG. 9; 
     FIG. 11 is a top cross-sectional view of another embodiment of an arrow rest according to this invention; 
     FIG. 12 is a front view of the arrow rest shown in FIG. 11; 
     FIG. 13 is a front view of another embodiment of a mating mounting according to this invention; 
     FIG. 14 is a side sectional view of another embodiment of an arrow rest providing adjustable lateral plunger depression and return action; 
     FIG. 15 is an exploded side sectional view of the arrow rest shown in FIG. 14; 
     FIGS. 15a and 15b are sectional view as indicated in FIG. 15; 
     FIG. 16 is a side view of another embodiment of a mounting means showing a different mounting of an arrow support wire; and 
     FIG. 17 is a top view of the embodiment shown in FIG. 16. 
    
    
     DESCRIPTION OF PREFERRED EMBODIMENTS 
     FIG. 1 shows a laterally adjustable arrow rest having a movable arrow support which automatically returns to its initial position installed in through opening 11 in the handle-riser portion 10 of an archery bow. Receiving sleeve 15 is secured and maintained in fixed relation to the bow by sleeve external threads 17 engaging internal threads of through opening 11. Receiving sleeve 15 may be firmly held in position by receiving sleeve holding nut 40 having internal threads 41 engaging receiving sleeve external threads 17 and screwed tightly against the side of the bow handle. The exterior of receiving sleeve holding nut 40 may have flats for engagement of a wrench for tightening. When receiving sleeve holding nut is screwed tightly against the bow handle-riser portion, both receiving sleeve 15 and receiving sleeve holding nut 40 are firmly attached in fixed relation to the bow. It is preferred that receiving sleeve 15 extend at least halfway through the thickness of the bow handle to provide rigidity to the receiving sleeve and to provide longitudinal bearing surface for mounting means 20. 
     Mounting means 20 is of an elongated shape adapted to fit non-rotatably but freely longitudinally movable within receiving sleeve 15. Receiving sleeve 15 is provided with longitudinal through opening 16 which may be any suitable shape to provide non-rotatable fit and free longitudinal movement to mating elongated mounting means 20. Mounting means 20 extends beyond receiving sleeve 15 on both ends. Various shaped mounting means 20 and mating receiving sleeve through opening 16 may be used, as shown more clearly in the sectional views of FIGS. 2 and 3. The non-circular cross-sectional shape of mounting means 20 provides it non-rotatble and freely longitudinally movable fit within receiving sleeve through opening 16. FIG. 2 shows mounting means 20 to have a truncated circular cross section and FIG. 3 shows a splined shape for mounting means 20. It is readily apparent that other non-circular shapes would also be suitable. 
     In one embodiment of the invention, arrow support wire having an arrow support portion 30 is pivotably mounted in the end of mounting means 20 extending from receiving sleeve 15 toward the desired position of arrow shaft 13. In another embodiment shown in FIGS. 9-13 mating mounting plate 80 is retained on the end of mounting means 20 by tubular fitting means 81 and a retractable arrow rest 90 having a flat plate 91 is firmly and replaceably retained in desired position on mating mounting plate 80. The opposite end of mounting means 20 extends sufficiently far to provide holding means, such as holding sleeve 24 for engagement with adjustment drive retainer ridge 52. Mounting means holding sleeve 24 is retained in fixed relation to mounting means 20b by any suitable locking means, such as locking screw 25. 
     Adjustment drive 50 has internal threads 51 engaging receiving sleeve external threads 17. Rotation of adjustment drive 50 causes lateral movement of the adjustment drive and due to holding means on the end of mounting means 20 being engaged with adjustment drive retainer ridge 52 causes mounting means 20 to move longitudinally within receiving sleeve 15. One suitable means of retaining adjustment drive 50 in a desired position is by providing locking screw 43 through a side wall of receiving sleeve holding nut 40. Receiving sleeve holding nut 40, as shown in FIG. 1, also provides receiving sleeve chamber 42 for general protection of the threaded portions of the arrow rest from the elements. 
     To provide easy replacement and assembly and disassembly of the arrow rest, adjustment drive 50 is provided with removable cap 55 which may be removed allowing access to removal of locking screw 25 and mounting means holding sleeve 24. After removal of mounting means holding sleeve 24, mounting means 20 may be readily pulled out of the opposite end of receiving sleeve 15. Adjustment drive removable cap 55 may be locked in position by any suitable means such as locking screw 57. 
     In the embodiment shown in FIG. 1, mounting means holding sleeve 24 allows rotation of adjustment drive 50 about it but substantially fills the length of holding sleeve chamber 53. Thus, longitudinal movement of mounting means 20 is controlled solely by longitudinal movement of adjustment drive 50 by engagement with the external threads of receiving sleeve 15. FIG. 8 shows another embodiment of retaining mounting means holding sleeve 24. As shown in FIG. 8, adjustment drive 50 is provided with removable cap 55 which forms chamber 58. The end of removable cap 55 has a hole with internal threads 50 for engagement with second adjustment means in the form of adjustment screw 60 provided with knurled hand portion 61. Spring 65 engages adjustment screw spring seat 62 at one end and the end of mounting means 20 or mounting means holding sleeve 24 at the other end. In this embodiment, in addition to mounting means 20 being adjustable longitudinally with respect to receiving sleeve 15, pressure on the opposite end of mounting means 20 may urge mounting means 20 longitudinally compressing spring 65 which returns mounting means 20 to its original position when the force on the other end is removed. The force necessary to urge mounting means against spring 65 is adjustable by rotation of adjustment screw 60. 
     One important embodiment of this invention provides a pivotable arrow support wire at one end of the elongated mounting means providing deflection upon an arrow shaft and fletching passing over the arrow support portion of the wire and a bias automatically returning the support wire to its initial predetermined position after discharge of the arrow. One embodiment is shown in a side view in FIG. 5 and a top view in FIG. 6 with the arrow support wire in its initial predetermined position denoted by I and deflected position denoted by the dashed shape of the wire in position II. The arrow support wire has generally vertical pivot portion 31 separated from generally vertical bias portion 33 by separation portion 32. Arrow support portion 30 of the support wire extends beyond the end of mounting means 20 and beyond the side of the bow 10 to receive arrow shaft 13. The bias spring has stationary portion 37 and movable portion 36 which the bias spring retained by pin 35 between these two portions. Bais spring stationary portion 37 rests upon spring holding face 22 in mounting means 20 and bias spring movable portion 36 is urged against bias portion 33 of the arrow support wire. The force of the bias may be controlled by the gauge of spring wire used or the flexibility of a sheet leaf-type spring. Pivoting of the arrow support portion of the arrow support wire from position I to position II increases the bias force in the spring. When the force of the arrow passing over the arrow support wire is terminated, the bias force in the spring applies force to bias portion 33 sufficient to return arrow support portion 30 to its original predetermined position adjacent arrow support wire return face 23. 
     It is readily apparent upon reading this disclosure that many embodiments using the principles desribed above for the pivotable arrow support would be suitable. For example, the arrow support wire may be pivoted on the portion of the wire denoted in FIG. 5 as 33 and return bias may be supplied to the portion of the arrow support wire denoted in the figure as 31. Likewise, separation portion 32 may be at the bottom of mounting means 20 instead of the top as shown. The bias spring means may be any suitable means supplying a bias force to the generally vertical portion of the arrow support wire which is not acting as the pivot portion for the pivotable arrow support. For example, it is only important that bias spring movable portion 36 be retained at one end to some type of retaining means, such as pin 35. 
     Another embodiment of the arrow support wire according to this invention is shown in FIG. 7 wherein pivot portion 31 and bias portion 33 of the arrow support wire are at about a 20° angle to the vertical. This configuration is especially preferred since as arrow support portion 30 of the arrow support wire pivots toward position II a downward movement is induced to arrow support portion 30. By the terminology &#34;generally vertical pivot portion&#34; and &#34;generally vertical bias portion&#34; as used throughout this disclosure and in the appended claims, I mean within about 45° of the vertical and preferably within about 30° of the vertical, when the bow is in a vertical shooting position. 
     The shape of the arrow support wire as shown in FIGS. 5 and 7 allows for some vertical deflection of arrow support portion 30 due to a thin spring-type wire being used. Arrow support portion 30 may be any desired shape to hold the arrow. Arrow support portion 30 of the arrow support wire may be covered by a sleeve or by material to reduce the frictional drag of the arrow shaft across the arrow support wire. Suitable materials include friction reducing plastics, such as fluorinated hydrocarbons (Teflon) or any other friction reducing materials known to the art. 
     One feature of the embodiments described above is the full lateral adjustment which is provided by the arrow rest of these embodiments. When deflected into position denoted as II in FIG. 6, arrow support arm 30 is against the side of the bow and there is no mechanism of the arrow rest projecting beyond the surface of the side of the bow. 
     Cap 70 provides a closure for the end of through opening 11 and by abutting against the end of mounting means 20 serves as a cushion and low friction surface for the arrow shaft. As shown in FIG. 4, cap 70 has longitudinal slot 71 to allow placement over bias portion 33 of arrow support wire and slot 72 allowing the desired movement of the arrow support wire. It is apparent that the shape and size of the slots may be altered to fit the desired arrow support wire motion. Cap 70 fits within the end of through opening 11 by friction and seats firmly against the end of mounting means 20 and may be maintained in position by a screw into the end of mounting means 20. Cap 70 may be made of plastic and end surface 73 coated with any suitable material to reduce the frictional drag of the arrow shaft. 
     In another embodiment of this invention shown in FIGS. 9 through 13, the arrow support means may be a conventional retractable arrow rest 90 mounted on flat plate 91, many such suitable arrow rests being well known to the art and previously adhered or otherwise fastened to the side of a bow. In this invention the flat plate of the arrow rest is removably, rigidly attached to one side of mating mounting plate 80, the other side of mating mounting plate 80 having tubular fitting means 81 snugly fitting over the end of mounting means 20 and may be maintained firmly in position by a screw into the end of mounting means 20. One embodiment of a suitable mating mounting plate is shown in FIGS. 9 and 10 wherein mounting plate 80 has lip holding means 82 along the bottom edge and undercut bottom holding means 83 extending through elongated holes in flat plate 91 to hold the retractable arrow rest flat plate 91 firmly in position. Thus, the retractable arrow rest may be readily replaced and assured positioned in the same position on mating mounting plate 80. any suitable means for holding the retractable arrow rest to mounting plate 80 may be used. Another means of holding retractable arrow rest flat palte 91 is shown in FIGS. 11 and 12 wherein opposing sides have undercut edges 84 which mate with opposing sides of flat plate 91. In a similar fashion as shown in FIG. 13, the retractable arrow rest may be slid sideways into mating mounting plate having undercut top and bottom edges 84 and front stop 85. Utilizing this embodiment of attachment of conventional arrow rests to the end of mounting means 20 provides a wide variety of choice in use of conventional arrow rests which may be laterally adjusted, the different types of retractable arrow rests being fitted by modification of mating mounting plate 80 in any appropriate method which will be readily apparent upon reading of this disclosure. 
     The embodiment of the arrow rest shown in FIGS. 14 and 15 achieves generally the same function as the arrow rest shown in FIG. 8. 
     FIG. 14 shows receiving sleeve 15 secured and maintained in fixed relation to the bow by sleeve external threads 17 engaging internal threads of through opening 11. Receiving sleeve 15 may be firmly held in position by receiving sleeve holding nut 40 having internal threads 41 engaging receiving sleeve external threads 17 and screwed tightly against the side of the bow handle. The exterior of receiving sleeve holding nut 40 may have flats for engagement of a wrench for tightening. When receiving sleeve holding nut is screwed tightly against the bow handle-riser portion, both receiving sleeve 15 and receiving sleeve holding nut 40 are firmly attached in fixed relation to the bow. 
     Mounting means 20 is fit non-rotatably but freely longitudinally movable within receiving sleeve 15. Receiving sleeve 15 is provided with longitudinal through opening 16 which may be any suitable shape to provide non-rotatable fit and free longitudinal movement to mating elongated mounting means 20, such as shown in FIGS. 15a and 15b. 
     In one embodiment of the invention, arrow support wire having an arrow support portion 130 is pivotably mounted in the end of mounting means 20 extending from receiving sleeve 15 toward the desired position of the arrow shaft as shown in FIGS. 16 and 17. The opposite end of mounting means 20 extends sufficiently far to provide holding means, such as holding sleeve 124 which is retained in fixed relation to mounting means 20 by any suitable locking means, such as locking screw 125. This allows lateral adjustment of and retention of mounting means 20 in its desired longitudinal position with respect to holding sleeve 124. 
     To provide easy replacement and assembly and disassembly of the arrow rest as well as adjustment of the force required for lateral movement or depression of mounting means 20, removble adjustment cap 160 threadedly engages internal threads 159 of receiving sleeve 15. The exterior of adjustment cap 160 may have knurled surface 161 for easy adjustment. Adjustment cap 160 may be locked in position by any suitable means such as locking screw 157. 
     As shown in FIGS. 14 and 15, spring 165 engages holding sleeve flange 126 at one end and the end of adjustment cap 160 at the other end. In this embodiment, in addition to mounting means 20 being adjustable longitudinally with respect to receiving sleeve 15, pressure on the opposite end of mounting means 20 may urge mounting means 20 longitudinally compressing spring 165 which returns mounting means 20 to its original position when the force on the other end is removed. The force necessary to compress spring 165 is adjustable by rotation of adjustment cap 160. 
     One important embodiment of this invention provides a pivotable arrow support wire at one end of the elongated mounting means providing deflection upon an arrow shaft and fletching passing over the arrow support portion of the wire and a bias automatically returning the support wire to its initial predetermined position after discharge of the arrow. One embodiment is shown in a side view in FIG. 16 and a top view in FIG. 17 with the arrow support wire in its initial predetermined position denoted by I and deflected position denoted by the dashed shape of the wire in position II. The arrow support wire has pivot portion 131 extending through bore 121 in the end of mounting means 20. Arrow support portion 130 of the support wire extends beyond the end of mounting means 20 and beyond the side of the bow 10 to the receive arrow shaft. The bias spring 122 is seated in spring chamber 136 and urges against bias portion 132 of the arrow support wire. The force of the bias may be controlled by the gauge of spring wire used or the flexbility of a sheet leaf-type spring. Pivoting of the arrow support portion of the arrow support wire from position I to position II increases the bias force in the spring. When the force of the arrow passing over the arrow support wire is terminated, the bias force in the spring applies force to bias portion 132 sufficient to return support wire bias portion 132 from the side of bias portion chamber 124 to its original predetermined position adjacent the side of bias portion chamber return face 123. 
     As shown in the embodiments in FIGS. 14-17, one important feature of my invention is mounting of the automatically returned arrow support wire in bore 121 which is on an angle of up to about 45° from vertical so that arrow support wire 130 deflects forwardly and downwardly and mounting means 20 moves inwardly upon passage of an arrow shaft and fletching when the arrow is released from a bow. The force necessary for lateral plunger depression and return is adjustable in this embodiment. 
     The components of the arrow rest of this invention may be constructed of suitable materials providing durability and weather-resistance. Suitable metals and moldable plastics will be readily apparent. The bias spring means and arrow support wire are preferably fabricated from stainless steel or other corrosion resistant material. 
     While in the foregoing specification this invention has been described in relation to certain preferred embodiments thereof, and many details have been set forth for purpose of illustration, it will be apparent to those skilled in the art that the invention is susceptible to additional embodiments and that certain of the details described herein can be varied considerably without departing from the basic principles of the invention.