Crossbow cocking mechanism

• US 6,705,304 B1
• Filed: 04/23/2003
• Issued: 03/16/2004
• Est. Priority Date: 04/23/2002
• Status: Expired due to Fees

• Current Assignee: Adam Cuthbert Pauluhn
• Original Assignee: Adam Cuthbert Pauluhn
• Inventors: Pauluhn, Adam Cuthbert
• Primary Examiner(s): Ricci, John A.
• Application Number:
  US10/421,211
• Time in Patent Office: 328 Days
• Field of Search: 124/25
• US Class Current: 124/25
• CPC Class Codes: F41B 5/12 Crossbows

Abstract

A crossbow including a stock having a forward end and a rearward end, a bow member mounted on the stock proximate the forward end with a bow string movable between a released position and a drawn position, a trigger mechanism including a latch for engaging and holding the bow string in the drawn position and selectively releasing the bow string into the released position when disengaged. The crossbow further includes a cocking mechanism having a string engaging member with a hook portion engaging the bow string in the released position and drawing the bow string to the drawn position in response to movement of a slide slidably mounted to an underside of the stock. A line has an end coupled to the slide and an opposing end coupled to the string engaging member. The line extends forwardly from the grip around the first guide, extending rearwardly from the first guide around the second guide and extending forwardly to couple to the string engaging member.

Claims

1. A crossbow comprising:

a stock having a forward end an a rearward end;

a bow member having a bow string, mounted on the stock proximate the forward end, the bow string movable between a released position and a drawn position;

a trigger mechanism carried by the stock, and including a trigger coupled to a latch, the latch for engaging and holding the bow string in the drawn position and selectively releasing the bow string into the released position when disengaged; and

a cocking mechanism comprising;

a string engaging member moveable between a ready position and a cocked position and including a hook portion engaging the bow string in the released position and drawing the bow string to the drawn position when moved to the cocked position;

a slide slidably mounted to an underside of the stock and movable forwardly toward the forward end and rearwardly toward the rearward end;

a first guide mounted to the stock proximate the forward end;

a second guide mounted to the stock proximate the rearward end; and

a line having an end coupled to the slide and an opposing end coupled to the string engaging member, the line extending forwardly from the grip around the first guide, extending rearwardly from the first guide around the second guide and extending forwardly to couple to the string engaging member.

2. A crossbow as claimed in claim 1 wherein the cocking mechanisms further includes a block and tackle coupling the opposing end of the line to the string engagement member.

3. A crossbow as claimed in claim 2 wherein the block and tackle includes an anchor fixing the opposing end of the line to the stock above the second guide and a pulley movably mounted in a slot defined in the stock intermediate the anchor and the latch.

4. A crossbow as claimed in claim 1 further including the line, the first guide, the second guide coupled to one side of the stock and further including:

a third guide mounted to the stock proximate the forward end on an opposing side of the stock;

a fourth guide mounted to the stock proximate the rearward end on the opposing side of the stock; and

a second line having an end coupled to the slide and an opposing end coupled to the string engaging member, the line extending forwardly from the grip around the third guide, extending rearwardly from the third guide around the fourth guide and extending forwardly to couple to the string engaging member.

5. A crossbow as claimed in claim 4 wherein the cocking mechanisms further includes a first block and tackle coupling the opposing end of the line to the string engagement member and a second block and tackle coupling the opposing end of the second line to the string engagement member.

6. A crossbow as claimed in claim 5 wherein the first block and tackle includes a first anchor fixing the opposing end of the line to the stock above the second guide and a first pulley movably mounted in a slot defined in the stock intermediate the anchor and the latch, the line extending forwardly from the anchor around the first pulley and rearwardly to the second guide and the second block and tackle includes a second anchor fixing the opposing end of the second line to the stock above the fourth guide and a second pulley movably mounted in the slot defined in the stock, the second line extending forwardly from the second anchor around the second pulley and rearwardly to the fourth guide.

7. A crossbow as claimed in claim 1 wherein the cocking mechanism further includes a biasing mechanism urging the string engaging member to the ready position.

8. A cocking mechanism for a crossbow including a stock having a forward end an a rearward end, a bow member having a bow string, mounted on the stock proximate the forward end, the bow string movable between a released position and a drawn position, and a trigger mechanism carried by the stock, and including a trigger coupled to a latch, the latch for engaging and holding the bow string in the drawn position and selectively releasing the bow string into the released position when disengaged, the cocking mechanism comprising:

a slide slidably mounted to an underside of the stock and movable forwardly toward the forward end and rearwardly toward the rearward end;

a string engaging member moveable between a ready position and a cocked position and including a hook portion engaging the bow string in the released position and drawing the bow string to the drawn position when moved to the cocked position;

a first guide mounted to the stock proximate the forward end;

a second guide mounted to the stock proximate the rearward end; and

a line having an end coupled to the slide and an opposing end coupled to the string engaging member, the line extending forwardly from the grip around the first guide, extending rearwardly from the first guide around the second guide and extending forwardly to couple to the string engaging member.

9. A cocking mechanism as claimed in claim 8 wherein the cocking mechanisms further includes a block and tackle coupling the opposing end of the line to the string engagement member.

10. A cocking mechanism as claimed in claim 9 wherein the block and tackle includes an anchor fixing the opposing end of the line to the stock above the second guide and a pulley movably mounted in a slot defined in the stock intermediate the anchor and the latch.

11. A cocking mechanism as claimed in claim 8 further including the line, the first guide, the second guide coupled to one side of the stock and further including:

a third guide mounted to the stock proximate the forward end on an opposing side of the stock;

a fourth guide mounted to the stock proximate the rearward end on the opposing side of the stock; and

a second line having an end coupled to the slide and an opposing end coupled to the string engaging member, the line extending forwardly from the grip around the third guide, extending rearwardly from the third guide around the fourth guide and extending forwardly to couple to the string engaging member.

12. A cocking mechanism as claimed in claim 11 wherein the cocking mechanisms further includes a first block and tackle coupling the opposing end of the line to the string engagement member and a second block and tackle coupling the opposing end of the second line to the string engagement member.

13. A cocking mechanism as claimed in claim 12 wherein the first block and tackle includes a first anchor fixing the opposing end of the line to the stock above the second guide and a first pulley movably mounted in a slot defined in the stock intermediate the anchor and the latch, the line extending forwardly from the anchor around the first pulley and rearwardly to the second guide and the second block and tackle includes a second anchor fixing the opposing end of the second line to the stock above the fourth guide and a second pulley movably mounted in the slot defined in the stock, the second line extending forwardly from the second anchor around the second pulley and rearwardly to the fourth guide.

14. A cocking mechanism for a crossbow including a stock having a first side, a second side, a forward end an a rearward end, a bow member having a bow string, mounted on the stock proximate the forward end, the bow string movable between a released position and a drawn position, and a trigger mechanism carried by the stock, and including a trigger coupled to a latch, the latch for engaging and holding the bow string in the drawn position and selectively releasing the bow string into the released position when disengaged, the cocking mechanism comprising:

a slide slidably mounted to an underside of the stock and movable forwardly toward the forward end and rearwardly toward the rearward end;

a string engaging member moveable between a ready position and a cocked position and including a hook portion engaging the bow string in the released position and drawing the bow string to the drawn position when moved to the cocked position;

a cocking cog coupled to the string engaging member and reciprocally movable within a notch formed in the stock intermediate the latch and the rearward end;

a first guide mounted to the stock proximate the forward end on the first side of the stock;

a second guide mounted to the stock proximate the rearward end on the first side of the stock; and

a first line having an end coupled to the slide and an opposing end coupled to a first anchor on the first side of the stock proximate the rearward end above the second guide, the line extending forwardly from the grip around the first guide, extending rearwardly from the first guide around the second guide extending forwardly around the cocking cog and extending rearwardly to the first anchor,

a third guide mounted to the stock proximate the forward end on the second side of the stock;

a fourth guide mounted to the stock proximate the rearward end on the second side of the stock; and

a second line having an end coupled to the slide and an opposing end coupled to a second anchor on the second side of the stock proximate the rearward end above the fourth guide, the second line extending forwardly from the grip around the third guide, extending rearwardly from the third guide around the fourth guide extending forwardly around the cocking cog and extending rearwardly to the second anchor.

15. A cocking mechanisms as claimed in claim 14 wherein the cocking cog includes a first pulley and a second pulley coupled by an axle.