Shooting bow

• US 8,899,218 B2
• Filed: 09/19/2012
• Issued: 12/02/2014
• Est. Priority Date: 09/19/2012
• Status: Active Grant

• Current Assignee: James J. Kempf
• Original Assignee: James J. Kempf
• Inventors: Kempf, James J.
• Primary Examiner(s): Kim, Gene
• Assistant Examiner(s): KLAYMAN, AMIR ARIE
• Application Number:
  US13/622,744
• Publication Number:
  US 20140076296A1
• Time in Patent Office: 804 Days
• Field of Search: 124/25, 124/31, 124/35.1
• US Class Current: 124/35.1
• CPC Class Codes: F41B 5/12 Crossbows
• CPC Class Codes: F41B 5/1469 Bow-string drawing or releasing devices F41B5/1473 takes precedence

Abstract

A trigger assembly for a crossbow or other weapon system. The trigger assembly includes a trigger arm coupled between a trigger and a sear. The trigger arm is not parallel to the line of fire, thereby allowing for increased mechanical advantage and a smoother, safer trigger pull. The trigger assembly incorporates various safety measures, including a dry fire mechanism which prevents the unintentional damaging and potentially dangerous release of the bowstring before an arrow is positioned on the rail of the crossbow. The trigger assembly allows for various adjustments to vary the trigger length and pull, while maintaining smoothness and preventing the unintentional or inadvertent release of the bowstring.

Claims

1. A trigger assembly comprising:

(a) a frame defining a projectile path;

(b) a trigger bar journaled to said frame;

(c) a trigger provided on said trigger bar;

(d) a trigger arm coupled to said trigger bar;

(e) a sear coupled to said trigger arm wherein said sear comprises;

(i) a sear assembly journaled to said frame at a sear pivot axis;

(ii) wherein said sear assembly is coupled to said trigger arm at a connection point;

(iii) a sear face coupled to said sear assembly between said sear pivot axis and said connection point;

(f) a firing assembly coupled to said sear; and

(g) wherein the uppermost point at which said trigger arm is coupled to said trigger bar is below the lowermost point at which said trigger arm is coupled to said sear.

2. The trigger assembly of claim 1, wherein said frame is a crossbow.

3. The trigger assembly of claim 1, further comprising a safety coupled to said sear.

4. The trigger assembly of claim 1, further comprising a safety engager coupled to said sear assembly between said sear pivot axis and said connection point.

5. The trigger assembly of claim 4, further comprising a safety slidably coupled to said safety engager.

6. The trigger assembly of claim 4, further comprising a compression spring coupled to said sear.

7. The trigger assembly of claim 4, further comprising a sear engager coupled to said sear face.

8. The trigger assembly of claim 7, wherein a string retainer assembly is coupled to said sear engager.

9. The trigger assembly of claim 8, wherein said string retainer assembly comprises a U-shaped bar.

10. The trigger assembly of claim 9, wherein said U-shaped bar comprises a string engager and a string retainer.

11. The trigger assembly of claim 8, further comprising a dry fire pin coupled to said U-shaped bar.

12. The trigger assembly of claim 11, further comprising an arrow in contact with said dry fire pin.

13. The trigger assembly of claim 8, further comprising a compression spring coupled to said string retainer assembly.

14. A trigger assembly comprising:

(a) a frame;

(b) a trigger;

(c) a trigger bar coupled to said trigger;

(d) wherein said trigger bar is journaled to said frame;

(e) a sear;

(f) a trigger arm coupled to said trigger bar and pivotably coupled to said sear;

(g) a firing assembly coupled to said sear;

(h) wherein the uppermost point at which said trigger arm is coupled to said trigger bar is below the lowermost point at which said trigger arm is coupled to said sear; and

(i) wherein said firing assembly is coupled to said sear at a point rearward of said trigger.

15. The trigger assembly of claim 14, further comprising:

(a) a string coupled to said firing assembly;

(b) an arrow coupled to said string;

(c) a dry fire pin coupled to said firing assembly; and

(d) wherein said arrow is in contact with said dry fire pin.