Crossbow with draw string coupled to fixed location

Patent metadata

Field	Value
Publication number	US-12460893-B2
Application number	US-202418970051-A
Country	US
Kind code	B2
Filing date	Dec 5, 2024
Priority date	Dec 6, 2023
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

A crossbow includes a frame, a first flexible limb, and a second flexible limb. The first flexible limb includes a first end and a second end, the first end coupled to the frame. The second flexible limb includes a first end and a second end, the first end coupled to the frame. A first pulley assembly is coupled to the second end of the first flexible limb and includes a first pulley. A second pulley assembly is coupled to the second end of the second flexible limb and includes a second pulley. A draw string is engaged with the first pulley and the second pulley, the draw string configured to move between a released position and a drawn position. The draw string includes a first loop coupled to a first attachment point on the frame; and a second loop coupled to a second attachment point on the frame.

First claim

What is claimed is:

1 . A crossbow, comprising:
a frame defining a projectile axis; a first flexible limb including a first end and a second end, the first end coupled to the frame; a second flexible limb including a first end and a second end, the first end coupled to the frame; a first pulley assembly coupled to the second end of the first flexible limb, the first pulley assembly comprising:
a first lever arm rotatably coupled to the first flexible limb proximate the second end of the first flexible limb, the first lever arm defining a first opening; and
a first pulley rotatably coupled to the first lever arm;
a second pulley assembly coupled to the second end of the second flexible limb, the second pulley assembly comprising:
a second lever arm rotatably coupled to the second flexible limb proximate the second end of the second flexible limb, the second lever arm defining a second opening; and
a second pulley rotatably coupled to the second lever arm; and
a draw string engaged with the first pulley of the first pulley assembly and the second pulley of the second pulley assembly, the draw string configured to move between a released position and a drawn position, the draw string extending through the first opening and the second opening, the draw string including:
a first end portion coupled to a first attachment point on the frame; and
a second end portion coupled to a second attachment point on the frame.

2 . The crossbow of claim 1 , wherein the first pulley includes a first draw string groove, the draw string engaged with the first draw string groove; and
wherein the second pulley includes a second draw string groove, the draw string engaged with the second draw string groove.

3 . The crossbow of claim 1 , further comprising:
a first column rigidly coupled to the frame, the first column including the first attachment point; and a second column rigidly coupled to the frame, the second column including the second attachment point.

4 . The crossbow of claim 3 , wherein the first column includes a first post extending radially from the first column, the first post defining the first attachment point; and
wherein the second column includes a second post extending radially from the second column, the second post defining the second attachment point.

5 . The crossbow of claim 1 , wherein the draw string includes a first loop and a second loop, wherein first loop includes a first portion and a second portion;
wherein the second loop includes a first portion and a second portion; wherein the first pulley includes:
a first draw string groove, the first portion of the first loop engaged with the first draw string groove of the first pulley; and
a second draw string groove, the second portion of the first loop engaged with first draw string second groove of the first pulley; and
wherein the second pulley includes:
a first draw string groove, the first portion of the second loop engaged with the first draw string groove of the second pulley; and
a second draw string groove, the second portion of the second loop engaged with the second draw string groove of the second pulley.

6 . The crossbow of claim 5 , further comprising:
a first column including a first post extending radially from the first column, the first loop engaged with the first post; and a second column including a second post extending radially from the second column, the second loop engaged with the second post.

7 . The crossbow of claim 1 , further comprising:
a first column including the first attachment point; and a second column including the second attachment point; wherein the frame includes a first plate and a second plate, the second plate positioned substantially parallel to the first plate and spaced apart from the first plate to define an opening; wherein the first column is coupled with the first plate and the second plate and positioned at least partially within the opening; and wherein the second column is coupled between the first plate and the second plate and positioned at least partially within the opening.

8 . The crossbow of claim 1 , wherein the frame includes a first plate and a second plate, the second plate substantially parallel to the first plate and spaced apart from the first plate to define an opening; and
wherein the draw string is configured to move between the released position and the drawn position at least partially within the opening.

9 . A crossbow, comprising:
a frame defining a projectile axis; a first flexible limb coupled to the frame; a second flexible limb coupled to the frame; a first pulley assembly coupled to a distal end of the first flexible limb, the first pulley assembly comprising:
a first lever arm rotatably coupled to the first flexible limb proximate the distal end of the first flexible limb, the first lever arm defining a first opening; and
a first pulley having a first draw string groove and a second draw string groove, the first pulley rotatably coupled to the first lever arm;
a second pulley assembly coupled to a distal end of the second flexible limb, the second pulley assembly comprising:
a second lever arm rotatably coupled to the second flexible limb proximate the distal end of the second flexible limb, the second lever arm defining a second opening; and
a second pulley having a first draw string groove and a second draw string groove, the second pulley rotatably coupled to the second lever arm; and
a draw string configured to move between a released position and a drawn position, the draw string extending through the first opening and the second opening, the draw string including:
a first loop engaged with the first pulley, the first loop including a first portion engaged with the first draw string groove and a second portion engaged with the second draw string groove, the first loop coupled with a first static mounting feature of the frame; and
a second loop engaged with the first pulley, the second loop including a first portion engaged with the first draw string groove and a second portion engaged with the second draw string groove, the second loop coupled with a second static mounting feature of the frame.

10 . The crossbow of claim 9 , wherein the frame includes a first column and a second column, the first column extending along a first column axis that extends substantially perpendicular to the projectile axis and is fixed relative to the frame, the second column extending along a second column axis that extends substantially perpendicular to the projectile axis and is fixed relative to the frame;
wherein the first column includes the first static mounting feature; and wherein the second column includes the second static mounting feature.

11 . The crossbow of claim 10 , further comprising:
a trigger box slidably engaged with the frame and configured to move between a forward position and a rearward position, the trigger box configured to selectively engage the draw string to move the draw string from the released position to the drawn position.

12 . The crossbow of claim 9 , wherein the frame includes a first plate and a second plate, the second plate substantially parallel to the first plate and spaced apart from the first plate to define an opening; and
wherein the draw string is configured to move between the released position and the drawn position at least partially within the opening.

13 . A crossbow, comprising:
a frame defining a projectile axis, the frame including:
a first column extending along a first column axis, the first column axis extending substantially perpendicular to the projectile axis and fixed relativ

Assignees

• Ravin Crossbows Llc

Inventors

• Yehle Craig

Classifications

• F41B5/10

  Compound bows {(compound crossbows F41B5/123)} · CPC title

• F41B5/12

  Crossbows · CPC title

• F41B5/1469

  Bow-string drawing or releasing devices (F41B5/1473 takes precedence) · CPC title

• F41B5/143 Primary

  Arrow rests or guides · CPC title

• F41B5/123 Primary

  Compound crossbows · CPC title