Limb mounting system

• US 8,047,189 B2
• Filed: 11/16/2007
• Issued: 11/01/2011
• Est. Priority Date: 11/16/2006
• Status: Active Grant

• Current Assignee: MCP IP, LLC
• Original Assignee: MCP IP, LLC
• Inventors: McPherson, Mathew A.
• Primary Examiner(s): RICCI, JOHN A
• Application Number:
  US11/941,918
• Publication Number:
  US 20080127961A1
• Time in Patent Office: 1,446 Days
• Field of Search: 124/23.1, 124/25.6, 124/86, 124/88
• US Class Current: 124/23.1
• CPC Class Codes: F41B 5/10 Compound bows compound crossbows F41B5/123

Abstract

An apparatus and method for reducing stress in a bow limb of an archery bow connected to a handle/riser of the bow by allowing a butt end of the bow limb connected to a forward end of the handle/riser by a limb bolt to flex forwardly when the bow is drawn and/or allowing the bow to flex rearwardly at the rearward end of the handle/riser when the bow is drawn.

Claims

1. A bow limb positive positioning system having a limb cap connected to a butt of a bow limb connected to a forward end of a handle/riser of a bow by a limb bolt with a curved washer positioned between a recess in said limb cap and an underside of a head of the limb bolt, said limb cap comprising a flange that abuts a sidewall of said limb.

2. The bow limb positive positioning system as set forth in claim 1, wherein said curved washer, said recess of said limb cap and said underside of said head of the limb bolt each comprises a generally spherical configuration.

3. The bow limb positive positioning system as set forth in claim 1, further including a bow limb fulcrum pivotally connected to a rearward end of said handle/riser.

4. The bow limb positive positioning system as set forth in claim 3, wherein said bow limb fulcrum comprises a pocket that receives a limb pad upon which rests the lower surface of the bow limb.

5. The bow limb positive positioning system as set forth in claim 3, wherein said bow limb fulcrum further comprises vertical surfaces which prevent any lateral movement of the bow limb with respect to the bow limb fulcrum.

6. A bow limb positive positioning system having a limb cap connected to a butt of a bow limb connected to a forward end of a handle riser of a bow by a limb bolt with a curved washer positioned between a recess in said limb cap and an underside of a head of the limb bolt, and a bow limb fulcrum member comprising a pivot plate positioned between an underside thereof and a corresponding pivot point at the rearward end of the handle riser, said fulcrum member arranged to pivot with respect to said handle riser as the bow is drawn.

7. A bow limb fulcrum member pivotally connected to a rearward end of a handle riser of a bow that received a bow limb, said fulcrum member arranged to pivot rearwardly on the rearward end when the bow is drawn, said rearward end comprising a peak that is convex with respect to said limb, said fulcrum pivotally connected to said peak.

8. The bow limb fulcrum member as set forth in claim 7, further comprising a pocket that receives a limb pad upon which rests a lower surface of the bow limb.

9. The bow limb fulcrum member as set forth in claim 7, wherein said bow limb fulcrum member further comprises vertical surfaces which prevent any lateral movement of the bow limb with respect to the bow limb fulcrum member.

10. The bow limb fulcrum member as set forth in claim 7, further comprising a pivot plate positioned between an underside thereof and the peak of the handle riser.

11. The bow limb fulcrum member as set forth in claim 7, further comprising a bow limb positive positioning system.

12. The bow limb fulcrum member as set forth in claim 11, wherein said bow limb positive positioning system comprises a limb cap connected to a butt of the bow limb connected to a forward end of the handle riser of the bow by a limb bolt with a curved washer positioned between a recess in said limb cap and an underside of a head of the limb bolt.

13. The bow limb fulcrum member as set forth in claim 12, wherein said curved washer, said recess of said limb cap and said underside of said head of the limb bolt each comprises a generally spherical configuration.

14. An archery bow having a brace condition and a drawn condition, the archery bow comprising:

a riser;

a limb;

a limb bolt attaching a butt end of said limb to said riser;

a limb cap positioned between said limb bolt and said limb, said limb cap comprising a flange that abuts a sidewall of said limb;

a pivot washer having a conical portion and a spheroidal portion, said limb cap comprising a spheroidal cavity; and

a fulcrum member positioned between said limb and said riser, said fulcrum member offset from said limb bolt along a length of said limb;

wherein said fulcrum member pivots with respect to said riser as the bow is drawn from the brace condition to the drawn condition.

15. The archery bow of claim 14, wherein said limb comprises an unsupported portion located between said fulcrum and said limb bolt.

16. The archery bow of claim 14, wherein said limb cap does not contact an underside of said limb.

17. An archery bow having a brace condition and a drawn condition, the archery bow comprising:

a riser;

a limb;

a limb bolt attaching a butt end of said limb to said riser;

a limb cap positioned between said limb bolt and said limb, said limb cap comprising a flange that abuts a sidewall of said limb; and

a fulcrum member positioned between said limb and said riser, said fulcrum member offset from said limb bolt along a length of said limb;

wherein said fulcrum member pivots with respect to said riser as the bow is drawn from the brace condition to the drawn condition; and

wherein said flange comprises an arcuate shape.

18. An archery bow having a brace condition and a drawn condition, the archery bow comprising:

a riser;

a limb;

a limb bolt attaching a butt end of said limb to said riser; and

a fulcrum member positioned between said limb and said riser, said fulcrum member offset from said limb bolt along a length of said limb;

wherein said fulcrum member pivots with respect to said riser as the bow is drawn from the brace condition to the drawn condition; and

wherein said fulcrum member comprises a concave cavity positioned upon a convex peak of said riser.