Bow

• US 7,708,001 B2
• Filed: 03/22/2006
• Issued: 05/04/2010
• Est. Priority Date: 03/22/2006
• Status: Active Grant

• Current Assignee: James J. Kempf
• Original Assignee: James J. Kempf
• Inventors: Kempf, James J.
• Primary Examiner(s): RICCI, JOHN A
• Application Number:
  US11/386,653
• Publication Number:
  US 20070221184A1
• Time in Patent Office: 1,504 Days
• Field of Search: 124/23.1, 124/25, 124/25.6, 124/86, 124/88
• US Class Current: 124/25.6
• CPC Class Codes: F41B 5/10 Compound bows compound crossbows F41B5/123
• CPC Class Codes: F41B 5/105 Cams or pulleys for compound bows

Abstract

A bow having an increased powerstroke allowing for reduced draw weight and increased speed. The bow is provided with a riser and a pair of limbs. A pulley is coupled to one limb and a cam is coupled to the other at a first journal point and second journal point respectively. The powerstroke is increased by locating the bowstring on the pulley and cam between the riser and the journal points.

Claims

1. A shooting bow comprising:

(a) a bow comprising;

(i) a riser;

(ii) a first limb extending from said riser in a direction away from a direction of shooting; and

(iii) a second limb extending from said riser in a direction away from a direction of shooting;

(b) a first string guide;

(c) means for journaling said first string guide to said first limb;

(d) a second string guide;

(e) means for journaling said second string guide to said second limb;

(f) a first string coupled to said first string guide and to said second string guide;

(g) a second string coupled from a first point on said first string guide forward of said first journaling means to a second point on said second string guide forward of said second journaling means;

(h) a nock point provided on said second string, and

(i) wherein said first string is integrally formed with said second string.

2. The shooting bow of claim 1, further comprising a handle coupled to said riser.

3. A shooting bow and arrow system comprising:

(a) a bow comprising;

i. a riser;

ii. a first limb extending from said riser in a direction away from a direction of shooting; and

iii. a second limb extending from said riser in a direction away from a direction of shooting;

(b) a first string guide;

(c) means for journaling said first string guide to said first limb;

(d) a second string guide;

(e) means for journaling said second string guide to said second limb;

(f) a first string coupled to said first string guide and to said second string guide;

(g) a second string coupled from a first point on said first string guide forward of said first journaling means to a second point on said second string guide forward of said second journaling means;

(h) an arrow extending from said second string to said riser, and

(i) wherein said arrow is coupled to said second string at a point rearward of said first string guide and said second string guide.

4. The shooting bow and arrow system of claim 3, wherein said arrow is coupled to said second string at a point rearward of said first string guide and said second string guide, and wherein said first point on said first string guide and said second point on said second string guide are located between said first journaling means and said second journaling means.

5. A shooting bow comprising:

(a) a bow comprising;

(i) a riser;

(ii) a first limb extending from said riser in a direction away from a direction of shooting; and

(iii) a second limb extending from said riser in a direction away from a direction of shooting;

(b) a first string guide, wherein said first string guide is a cam;

(c) means for journaling said first string guide to said first limb;

(d) a second string guide;

(e) means for journaling said second string guide to said second limb;

(f) a first string coupled to said first string guide and to said second string guide;

(g) a second string coupled from a first point on said first string guide forward of said first journaling means to a second point on said second string guide forward of said second journaling means;

(h) a nock point provided on said second string; and

(i) wherein said second string guide is a pulley.

6. A shooting bow comprising:

(a) a bow comprising;

(i) a riser;

(ii) a first limb extending from said riser in a direction away from a direction of shooting; and

(iii) a second limb extending from said riser in a direction away from a direction of shooting;

(b) a first string guide;

(c) means for journaling said first string guide to said first limb;

(d) a second string guide;

(e) means for journaling said second string guide to said second limb;

(f) a first string coupled to said first string guide and to said second string guide;

(g) a second string coupled from a first point on said first string guide forward of said first journaling means to a second point on said second string guide forward of said second journaling means; and

(h) means for retaining said second string in a cocked position.

7. The shooting bow of claim 6, further comprising a trigger coupled to said second string.

8. The shooting bow of claim 7, further comprising a projectile track coupled to said riser.

9. A shooting bow comprising:

(a) a bow comprising;

(i) a riser;

(ii) a first limb extending from said riser in a direction away from a direction of shooting; and

(iii) a second limb extending from said riser in a direction away from a direction of shooting;

(b) a first string guide;

(c) means for journaling said first string guide to said first limb;

(d) a second string guide;

(e) means for journaling said second string guide to said second limb;

(f) a first string coupled to said first string guide and to said second string guide;

(g) a second string coupled from a first point on said first string guide to a second point on said second string guide;

(h) wherein said first point is located between said riser and said first string guide journaling means;

(i) wherein said second point is located between said riser and said second string guide journaling means

(j) a nock point provided on said second string; and

(k) wherein said first string is integrally formed with said second string.

10. A shooting bow comprising:

(a) a bow comprising;

(i) a riser;

(ii) a first limb extending from said riser in a direction away from a direction of shooting; and

(iii) a second limb extending from said riser in a direction away from a direction of shooting;

(b) a first string guide;

(c) means for journaling said first string guide to said first limb;

(d) a second string guide;

(e) means for journaling said second string guide to said second limb;

(f) a first string coupled to said first string guide and to said second string guide

(g) a second string coupled from a first point on said first string guide to a second point on said second string guide;

(h) wherein said first point is located between said riser and said first string guide journaling means;

(i) wherein said second point is located between said riser and said second string guide journaling means;

(j) a nock point provided on said second string; and

(k) wherein said first point is located at the point where said second string first contacts said first string guide, wherein said second point is located at the point where said second string first contacts said second string guide, and wherein said first string guide is a cam.

11. The shooting bow of claim 10, wherein said second string guide is a pulley.

12. A shooting bow comprising:

(a) a bow comprising;

(i) a riser;

(ii) a first limb extending from said riser in a direction away from a direction of shooting; and

(iii) a second limb extending from said riser in a direction away from a direction of shooting;

(b) a first string guide;

(c) means for journaling said first string guide to said first limb;

(d) a second string guide;

(e) means for journaling said second string guide to said second limb;

(f) a first string coupled to said first string guide and to said second string guide;

(g) a second string coupled from a first point on said first string guide to a second point on said second string guide;

(h) wherein said first point is located between said riser and said first string guide journaling means;

(i) wherein said second point is located between said riser and said second string guide journaling means;

(j) wherein said second string guide is a cam; and

(k) wherein said first point is located at the point where said second string first contacts said first string guide, wherein said second point is located at the point where said second string first contacts said second string guide, and wherein said first string guide is a cam.

13. A shooting bow comprising:

(a) a riser;

(b) a first limb extending from said riser;

(c) a second limb extending from said riser;

(d) a cam journaled to said first limb at a first journal point;

(e) a pulley journaled to said second limb at a second journal point;

(f) a first string coupled to said cam and to said pulley;

(g) a second string coupled from a first string point on said cam to a second string point located on said pulley;

(h) wherein when said second string is uncocked, said first string point is located between said riser and said first journal point and said second string point is located between said riser and said second journal point, and

(i) wherein when said second string is cocked, said first string point and said second string point are located between said first journal point and said second journal point.