Crossbow

• US 5,025,771 A
• Filed: 09/19/1989
• Issued: 06/25/1991
• Est. Priority Date: 09/19/1989
• Status: Expired due to Fees

• Current Assignee: Brooks K. Hanson
• Original Assignee: Brooks K. Hanson
• Inventors: Hanson, Brooks K.
• Primary Examiner(s): Cuomo, Peter M.
• Application Number:
  US07/408,802
• Time in Patent Office: 644 Days
• Field of Search: 124/25, 124/40, 124/35 R, 124/31, 124/87, 124/35.1
• US Class Current: 124/25
• 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 crossbow incorporates a simplified trigger and bow string release assembly which includes a single piece trigger and bow string release member pivotally mounted within the stock. A spring urges the trigger and bow string release member about its pivot axis to its bow string holding position. A safety mechanism is provided to prevent rotation of the trigger and bow string release member when the safety is "on". The crossbow stock is preferably formed of two molded stock halves which are secured together to pivotally mount the trigger and bow string release member therebetween. The crossbow also preferably includes a nose piece with an integral cocking stirrup.

Claims

1. A crossbow assembly, comprising an elongate stock having two opposing side surfaces, a relatively narrow upper surface, a relatively narrow lower surface, a front nose surface, and a rear butt surface;

a unitary trigger and bow string release member pivotally mounted within the stock so that a trigger portion of said member extends from the relatively narrow lower surface of the stock to form a trigger and a bow string release portion extends from the relatively narrow upper surface of the stock to form a bow string holding and release means;

pivot means mounting the trigger and bow string release member within the stock so that movement of the trigger portion about the pivot mounting from a cocked to released position causes movement of the bow string release portion from a bow string holding position wherein a bow string is held in a cocked position by resting against the bow string holding and release portion of the member to a bow string released position wherein the bow string holding and release portion of the member has pivoted to release the bow string; and

retraction means for urging the trigger and bow string release member to a position wherein the trigger portion is in its cocked position and the bow string release portion is in its bow string holding position.

2. A crossbow assembly according to claim 1, additionally including a nose piece secured to the nose surface of the stock, said nose piece having a passageway therethrough adapted to receive and hold a prod in operable position with respect to the stock.

3. A crossbow assembly according to claim 2, wherein the nose piece includes a T-shaped cocking stirrup integrally formed therewith having a pair of transverse elongate projections adapted to be held by at least one of a user'"'"'s feet during cocking of the crossbow.

4. A crossbow assembly according to claim 2, additionally including a front sight mounting member mounted to the nose piece for adjustable vertical positioning;

and a front sight mounted on the front sight mounting member for adjustable horizontal positioning.

5. A crossbow assembly according to claim 1, which additionally includes safety latch means for selectively latching or unlatching the trigger and bow string release member such that when latched said trigger and bowstring release member is locked in its bow string holding position.

6. A crossbow assembly according to claim 5, wherein the safety latch means includes a safety bar mounted for movement between a latched position wherein the bar is in latching engagement with the trigger and bow string release member and an unlatched position allowing pivoting of the trigger and bow string release member between cocked and released positions, said safety bar having a detent notch, and a metallic leaf spring employing a wrinkle which cooperates with the detent notch in the safety bar when the safety bar is placed in latched position to hold the safety bar in latched position.

7. A crossbow assembly according to claim 5, wherein the safety latch means comprises a slidable elongate member positioned in a receiving recess in the stock and so configured and adapted to be slidably moved between a safety "on" position where it engages a portion of the trigger and bow string release member so as to prevent pivotal motion of said member, and a safety "off" position were it does not engage said member.

8. A crossbow assembly according to claim 5, additionally including a trigger guard assembled to the lower surface of the stock and which partially surrounds the trigger;

an elongate arrow track assembled to the upper surface of the stock adapted to hold and initially guide an arrow when released for flight, and which includes an elongate recess therein which serves as a passageway for a fletching of the arrow;

a recoil pad assembled to the butt surface of the stock;

a nose piece assembled to the nose of the stock which is adapted to receive and hold in place a prod and also to receive and hold a front sight mounting member;

a front sight mounting member adapted to receive and hold in place a front sight; and

a rear sight mounting member assembled to the upper surface of the stock in the vicinity of the trigger and bow string release member and which is adapted to receive and hold in place a rear sight.

9. A crossbow assembly according to claim 5, wherein the stock comprises two elongate molded matching members adapted to be assembled together and permanently affixed together by cementing opposite edge surfaces together.

10. A crossbow assembly according to claim 9, wherein each molded matching member has cooperating recesses therein for receiving, and sealing therein, the trigger and bow string release member, the pivot means, the retraction means, and the trigger safety latch means.

11. A crossbow assembly according to claim 9, wherein the molded matching members are configured so that when assembled together they form an elongate arrow track groove extending along the upper surface of the stock forwardly of the bow string release portion of the trigger and bow string release member to accept an arrow along the top of the track with a fletch of the arrow extending into the groove.

12. A crossbow assembly according to claim 9, additionally including a rear sight mounting block secured to the upper surface of the stock rearwardly of the bow string release portion of the bow string release member.

13. A crossbow assembly according to claim 12, wherein the rear sight mounting block is secured to the upper surface of the stock adjacent the bow string release portion of the bow string release member and includes a portion extending forwardly over the bow string release portion of the bow string release member to provide a protective cover for such member.

14. A crossbow assembly according to claim 13, wherein the rear sight mounting block is adapted to receive a scope sight.

15. A crossbow assembly according to claim 9, additionally including a recoil pad secured to the rear butt surface of the stock and adapted to rest comfortably against the shoulder of a user.

16. A crossbow assembly according to claim 9, wherein each molded matching member includes a cheek piece molded into the side surface near the rear butt surface of the stock to thereby provide a cheek piece on each side of the stock whereby the same stock may be used by either a right-handed or left-handed person.

17. A crossbow assembly according to claim 9, wherein the pivot means comprises a transverse pivot pin passing through the trigger and bow string release member and having ends adapted to be rotatably received in a recess in each of the molded members when assembled together to form the stock.

18. A crossbow assembly according to claim 9, wherein the retraction means comprises a spring.

19. A crossbow assembly according to claim 9, wherein the trigger portion has a trigger pivotal crank arm extending approximately from the pivot pin to said trigger portion, and the bow string release portion has a bow string release pivotal crank arm extending approximately from said pivot pin to said bow string release portion.

20. A crossbow assembly according to claim 19, wherein the bow string release portion is substantially arcuately shaped with a radius approximately equal to the length of the bow string release pivotal crank arm.

21. A crossbow assembly according to claim 19, wherein the trigger portion has an arcuately shaped trigger near the extremity of the trigger pivotal crank arm adapted to comfortably engage the finger of a user exerting rearward pressure against said trigger.

22. A crossbow assembly according to claim 19, wherein the trigger portion is so configured and emplaced that the force of a user'"'"'s finger against the trigger portion is directed at approximately ninety degrees with respect to the trigger pivotal crank arm.

23. A crossbow assembly according to claim 19, wherein the bow string release portion is so configured and emplaced that the force of a cocked bowstring against the bow string release portion is directed at an angle lying between one hundred and fifty degrees and one hundred and eighty degrees with respect to the bowstring release pivotal crank arm.

24. A crossbow assembly according to claim 23, wherein the contact point of the cocked bowstring against the bowstring release portion is approximately adjacent the upper surface of the stock.