Line crossbow conversion kit and hybrid compound bow

• US 8,622,050 B2
• Filed: 05/27/2011
• Issued: 01/07/2014
• Est. Priority Date: 06/15/2010
• Status: Active Grant

• Current Assignee: Jerry Goff, Sherwood L. Goff
• Original Assignee: Jerry Goff
• Inventors: Goff, Jerry, Goff, Sherwood L.
• Primary Examiner(s): RICCI, JOHN A
• Application Number:
  US13/117,666
• Publication Number:
  US 20110303205A1
• Time in Patent Office: 956 Days
• Field of Search: 124/23.1, 124/24.1, 124/25.6, 124/35.2, 124/86, 124/88, 124/40, 124/25
• US Class Current: 124/25
• CPC Class Codes: F41B 5/12 Crossbows

Abstract

A kit is provided to convert a compound archery bow into a left or right handed inline (vertical limb) crossbow. The conversion kit includes a mounting plate attachable to a side of the bow riser section to hold a socket to receive a draw-lock bar which can be removed for take-down and storage. The draw-lock bar has a series of laterally spaced bolt holes to attach a grip with a trigger release latch assembly at a selectable draw length. The bar can be rotated and attached to either side of the bow, and the trigger and grip can be reposition within the trigger housing for left, right or horizontal shooting. The string latch assembly has an anti-dryfire lever that is only moved from the blocking position when an arrow is nocked. The kit also provides a hinged cocking stirrup, and a front hand vertical grip on the riser side opposite the draw-bar socket. Also disclosed is a dedicated hybrid compound bow for dedicated use with kit as an inline or traditional crossbow. The hybrid compound bow is made especially. The hybrid bow has no forehand grip, and has a shoot through riser to provide vertical and horizontal centering of the arrow to the string.

Claims

1. A kit for converting a compound archery bow into a vertical limb or horizontal limb crossbow, the kit comprising:

a socket to receive a draw-lock bar, the socket being adopted for attachment to a mounting plate located on a side of the bow, a draw-lock bar with one end adapted to be inserted into the socket, and a trigger and string release assembly adapted to be bolted to the opposite end of the draw-lock bar, the trigger and release assembly including a string release section containing a string latch, a trigger section containing a pistol grip and a trigger for actuating the string latch to release the string, and an anti-dryfire mechanism that blocks the string latch from releasing the bow string when the trigger is pulled if there is no arrow nocked onto the string, wherein the blocking mechanism is moved out of the blocking position by the presence of an arrow, and further comprising a foot stirrup attached to the mounting plate to which the socket is attached, the stirrup having a hinged connection to the plate that allows the stirrup to extend forward of the bow in an open hinged position and be folded back along the bow in a closed hinge position.

2. A kit as in claim 1, further comprising the draw-lock bar having at its opposite end a series of laterally spaced bolt holes along its length, and the trigger and release assembly being mounted to the bar at selected bolt holes to establish a power stroke length for the bow.

3. A kit as in claim 1, wherein the draw-lock bar socket can be mounted on a mounting plate located on either left or right hand side of the bow such that the draw lock bar can be mounted either side of the bow, the trigger and string release assembly can be mounted on the inside of the bar when the bar is either on the left or right side of the bow, and the trigger and pistol grip can be individually relocated within the trigger section for right or left hand shooting.

4. A kit as in claim 3, further comprising the draw-lock bar having at its opposite end a series of laterally spaced bolt holes along its length, and the trigger and release assembly being mounted to the bar at selected bolt holes to establish a power stroke length for the bow.

5. The kit of claim 1 further comprising a second mounting plate for attachment to the bow on the side of the bow opposite the drawlock bar socket for mounting a vertical hand grip.

6. The kit of claim 1 further comprising the foot stirrup been capable of stopping at intermediate positions to allow the stirrup to functions as a kickstand or a shooting rest.

7. In combination with the kit of claim 1, a hybrid compound bow having a shoot through riser and no integral handgrip in the riser area.

8. The combination of claim 7, the bow further comprising a contained arrow rest positioned in the shoot through riser to give a nocked arrow essentially vertical and horizontal centering on the bow.

9. A kit for converting a compound archery bow into a vertical limb crossbow, the kit comprising:

a drawlock bar configured as a hollow tube with square cross section, the bar having a series of bolt holes spaced along left and right lateral sides its length, the bar also having one end adapted to be inserted into a socket attached to a side of the riser section of a compound bow, and

a trigger and string release assembly adapted to be bolted to the bar through at least a pair of the bolt holes, the trigger and release assembly including a string release section containing a string latch, and a trigger section containing a pistol grip and a trigger for actuating the string latch to release the string.

10. A kit as in claim 9, further comprising a mounting plate for attaching said socket to the bow, wherein the mounting plate has a bolt hole and a bolt slot for bolting the socket to the bow at an adjustable angle to offset the bar so that the bar does not interfere with the drawstring.

11. A kit as in claim 9, wherein the draw-lock bar can be mounted either side of the bow, the trigger and string release assembly can be mounted on the inside of the bar when the bar is either on the left or right side of the bow, and the trigger and pistol grip can be individually relocated within the trigger section for right or left hand shooting.