Archery bow with ballast stabilizer

Abstract

In some embodiments, an archery bow comprises a riser, a limb assembly attached to the riser and a stabilizer. The limb assembly comprises a first limb member and a second limb member. The stabilizer is attached to the riser, and at least a portion of the stabilizer is oriented between the first limb member and the second limb member.

Claims

1. An archery bow comprising: a riser comprising a threaded cavity and a grip; a shooting axis; a first limb attached to the riser; a second limb attached to the riser; and a bowstring extending between the first limb and the second limb, the bowstring comprising a segment; wherein a central axis of the threaded cavity is oriented parallel to the bowstring segment in an undrawn condition of the archery bow and a distance from the shooting axis to the threaded cavity is greater than a distance from the shooting axis to the grip.

2. The archery bow of claim 1, the central axis oriented orthogonal to the shooting axis.

3. The archery bow of claim 2, wherein the shooting axis intersects the bowstring segment.

4. The archery bow of claim 2, the riser comprising a vibration damper, wherein a distance between the shooting axis and the threaded cavity is greater than a distance between the shooting axis and the vibration damper.

5. The archery bow of claim 1, comprising a stabilizer attached to the threaded cavity.

6. The archery bow of claim 5, a longitudinal axis of the stabilizer oriented parallel to the central axis.

7. The archery bow of claim 5, the first limb comprising a limb assembly comprising a first limb member and the second limb member, at least a portion of the stabilizer oriented between the first limb member and the second limb member.

8. The archery bow of claim 5, the limb assembly comprising a tension side and a compression side, a first end of the stabilizer oriented on the compression side, a second end of the stabilizer oriented on the tension side.

9. The archery bow of claim 5, the stabilizer comprising a spike.

10. An archery bow comprising: a riser; a limb cup attached to the riser, the limb cup comprising a threaded cavity, the limb cup supporting a first limb; a second limb attached to the riser; and a bowstring extending between the first limb and the second limb, the bowstring comprising a segment; wherein a central axis of the threaded cavity is oriented parallel to the bowstring segment in an undrawn condition of the archery bow.

11. The archery bow of claim 10, the bow comprising a shooting axis, the central axis oriented orthogonal to the shooting axis.

12. The archery bow of claim 11, wherein the shooting axis intersects the bowstring segment.

13. The archery bow of claim 11, the riser comprising a vibration damper, wherein a distance between the shooting axis and the threaded cavity is greater than a distance between the shooting axis and the vibration damper.

14. The archery bow of claim 10, comprising a stabilizer attached to the threaded cavity.

15. The archery bow of claim 14, a longitudinal axis of the stabilizer oriented parallel to the central axis.

16. The archery bow of claim 14, the threaded cavity comprising a first threaded cavity, the limb cup comprising a second threaded cavity.

17. The archery bow of claim 16, wherein a central axis of the second threaded cavity is non-parallel to the central axis of the first threaded cavity.

18. The archery bow of claim 14, the stabilizer comprising a spike.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) A detailed description of the invention is hereafter described with specific reference being made to the drawings.

(2) FIGS. 1 and 2 show different views of an embodiment of a bow.

(3) FIGS. 3 and 4 show exploded views of the bow of FIG. 1.

(4) FIGS. 5-7 show different views of another embodiment of a bow.

(5) FIG. 8 shows an exploded view of the bow of FIG. 5.

(6) FIGS. 9 and 10 show different views of another embodiment of a bow.

(7) FIG. 11 shows an exploded view of the bow of FIG. 9.

DETAILED DESCRIPTION OF THE INVENTION

(8) While this invention may be embodied in many different forms, there are described in detail herein specific embodiments of the invention. This description is an exemplification of the principles of the invention and is not intended to limit the invention to the particular embodiments illustrated.

(9) For the purposes of this disclosure, like reference numerals in the figures shall refer to like features unless otherwise indicated.

(10) FIG. 1 shows an embodiment of an archery bow 10 that comprises a riser 12 and a stabilizer 40. In some embodiments, a first end 41 of the stabilizer 40 is attached to the riser 12. In some embodiments, the stabilizer 40 extends away from the riser 12 in a downward direction, for example in a direction orthogonal to the shooting axis 14, or in a substantially downward direction. In some embodiments, the stabilizer 40 comprises one or more weights 48, which may be provided a second end 43 of the stabilizer 40 and spaced away from the riser 12 as much as desired.

(11) In some embodiments, the stabilizer 40 concentrates weight 48 as far as possible from the shooting axis 14 and the weight 48 increases a moment of intertia of the bow 10. The stabilizer 40 provides mass that acts as a ballast placed in the lowest location of the bow 10 structure, which lowers the center of gravity and resists torqueing about three orthogonal axes at the grip contact point/area 18. As shown in FIG. 1, the weight 48 provides a high amount of resistance to twisting of the bow 10 about an axis parallel to the shooting axis 14 (e.g. roll) and against rocking in the fore and aft directions (e.g. pitch).

(12) In some embodiments, the stabilizer 40 is attached to the riser 12 using any suitable method. In some embodiments, the riser 12 comprises a threaded cavity 16 arranged to engage the stabilizer 40. In some embodiments, the stabilizer 40 comprises a threaded stud 50 configured to engage the threaded cavity 16. In some embodiments, a central axis of the threaded cavity 16 is oriented orthogonal to the shooting axis 14. In some embodiments, a central axis of the threaded cavity 16 is oriented in a vertical direction. In some embodiments, a central axis of the threaded cavity 16 is oriented parallel to a portion of the bowsting 15 in a brace condition.

(13) In some embodiments, a limb assembly 30 or limb cup 20 is attached to the riser 12 by a limb bolt 26. In some embodiments, a limb bolt 26 engages bolt threadings that may be provided in the riser 12 or in a limb nut 28. As shown in FIGS. 1 and 2, the limb nut 28 comprises a barrel nut having limb threadings and capable of rotating within the riser 12. In some embodiments, the threaded cavity 16 configured to receive the stabilizer 40 is located farther away from the shooting axis 14 than the limb nut 28 and/or the bolt threadings.

(14) In some embodiments, the limb assembly 30 comprises a first limb member 32 and a second limb member 34. In some embodiments, the limb cup 20 supports the first limb member 32 and the second limb member 34. In some embodiments, the limb cup 20 comprises features as disclosed in U.S. Pat. No. 8,453,635. In some embodiments, the limb cup 20 comprises a first cavity 22 and a second cavity 24. In some embodiments, the first cavity 22 receives the first limb member 32 and the second cavity 24 receives the second limb member 34.

(15) In some embodiments, the stabilizer 40 extends between the first limb member 32 and the second limb member 34. In some embodiments, the first limb member 32 and the second limb member 34 support a rotatable member 19. In some embodiments, the first limb member 32 and the second limb member 34 are separated by a gap 33, and a portion of the stabilizer 40 is oriented in the gap 33.

(16) In some embodiments, a limb member 32, 34 or a limb assembly 30 comprises a tension side 36 and a compression side 38. In some embodiments, the first end 41 of the stabilizer 40 is oriented on the compression side 38, and the second end 43 of the stabilizer is oriented on the tension side 36.

(17) FIGS. 3 and 4 show exploded view of the bow 10 of FIG. 1. In some embodiments, the stabilizer 40 comprises a shaft 42, a first end adapter 44 and a second end adapter 46. In some embodiments, it is desirable for the shaft 42 to be as light as possible and as stiff as possible. In some embodiments, the shaft 42 is made from carbon fiber or another material that may not be desirable for forming threadings to engage a mounting stud 50. In some embodiments, an end adapter 44, 46 is used to terminate the shaft 42 and provide threadings to engage a mounting stud 50. In some embodiments, the second end adapter 46 engages a mounting stud 50 and the mounting stud 50 engages the weights 48. The weights 48 can have any suitable size, shape, mass and configuration. In some embodiments, a weight 48 comprises a spike 49. In some embodiments, a spike 49 can be used to pierce the ground, and the stabilizer 40 can be used as a stand for the bow 10.

(18) FIGS. 5-8 show another embodiment of an archery bow 10 wherein a stabilizer 40 attaches to a limb cup 20. In some embodiments, the bow 10 comprises multiple stabilizers 40a, 40b, 40c, and each stabilizer 40a, 40b, 40c attaches to the limb cup 20.

(19) In some embodiments, a limb cup 20 comprises an outwardly projecting structure that comprises a stabilizer mount 60. In some embodiments, a stabilizer mount 60 is configured for attachment to multiple stabilizers 40a, 40b, 40c. In some embodiments, a limb cup 20 comprises multiple stabilizer mounts 60 (not illustrated).

(20) In some embodiments, a stabilizer mount 60 comprises a cavity 64, for example arranged to receive a threaded stud 50. In some embodiments, a stabilizer mount 60 comprises a flat surface 62 that surrounds the cavity 64, and the flat surface 62 will abut a flat surface of the stabilizer 40.

(21) In various embodiments, a bow 10 can comprise any suitable number of stabilizers 40a, 40b, 40c, and the limb cup 20 can comprise a mounting structure (e.g. cavity 64) for each stabilizer 40.

(22) In some embodiments, cavities 64 are provided to allow stabilizers 40a, 40b, 40c to extend along each of the 3 orthogonal axes (e.g. parallel to the shooting axis 14 and two axes orthogonal to the shooting axis 14).

(23) FIGS. 9-11 show another embodiment of an archery bow 10. In some embodiments, multiple stabilizers 40a, 40b, 40c, 40d extend at angles to one another and provide a stand structure comprising a bipod, tripod, quadpod, etc. In some embodiments, multiple stabilizers 40 extend at equal but opposite angles to a reference axis 66, such as a vertical axis. In some embodiments, the cavities 64a-64d and flat surfaces 62a-62d are arranged to provide such orientations to the stabilizers 40a-40d.

(24) In some embodiments, the second ends 43 of the stabilizers 40a-40d are aligned on a reference plane 68. In some embodiments, the reference plane 68 can represent the ground, and the bow 10 is supported by the stabilizers 40a-40d. In some embodiments, the stabilizers 40a-40d comprise a stable base that can support the bow 10 with the second ends 43 contacting the supporting surface/reference plane 68. In some embodiments, no object contacts or supports the bow 10 except the stabilizers 40a-40d. In some embodiments, the reference plane 68 is oriented parallel to the shooting axis 14.

(25) The above disclosure is intended to be illustrative and not exhaustive. This description will suggest many variations and alternatives to one of ordinary skill in this field of art. All these alternatives and variations are intended to be included within the scope of the claims where the term “comprising” means “including, but not limited to.” Those familiar with the art may recognize other equivalents to the specific embodiments described herein which equivalents are also intended to be encompassed by the claims.

(26) Further, the particular features presented in the dependent claims can be combined with each other in other manners within the scope of the invention such that the invention should be recognized as also specifically directed to other embodiments having any other possible combination of the features of the dependent claims. For instance, for purposes of claim publication, any dependent claim which follows should be taken as alternatively written in a multiple dependent form from all prior claims which possess all antecedents referenced in such dependent claim if such multiple dependent format is an accepted format within the jurisdiction (e.g. each claim depending directly from claim 1 should be alternatively taken as depending from all previous claims). In jurisdictions where multiple dependent claim formats are restricted, the following dependent claims should each be also taken as alternatively written in each singly dependent claim format which creates a dependency from a prior antecedent-possessing claim other than the specific claim listed in such dependent claim below.

(27) This completes the description of the preferred and alternate embodiments of the invention. Those skilled in the art may recognize other equivalents to the specific embodiment described herein which equivalents are intended to be encompassed by the claims attached hereto.