Crossbow Cocking Crank

Patent metadata

Field	Value
Publication number	US-2016258709-A1
Application number	US-201615153549-A
Country	US
Kind code	A1
Filing date	May 12, 2016
Priority date	Aug 9, 2013
Publication date	Sep 8, 2016
Grant date	—

Abstract

In some embodiments, a crossbow crank comprises a housing and a shaft rotatable with respect to the housing. A one-way mechanism is arranged to prevent rotation of the shaft in a first rotational direction, but allow rotation in a second direction. A release mechanism is arranged to disengage the one-way mechanism from the shaft. The release mechanism has a first position and a second position, wherein the release mechanism moves along a length of the shaft between the first position and the second position.

First claim

1 . A crossbow crank comprising:
a housing; a shaft rotatable with respect to said housing; a one-way mechanism arranged to prevent rotation of said shaft in a first rotational direction; and a release mechanism having a first position and a second position, said release mechanism moving along a length of said shaft between said first position and said second position, said release mechanism rotationally engaged with said shaft in said first position, said release mechanism not rotationally engaged with said shaft in said second position.

2 . The crossbow crank of claim 1 , wherein said one-way mechanism comprises a roller clutch.

3 . The crossbow crank of claim 1 , wherein said shaft comprises a first spool and a second spool oriented on opposite sides of the shaft.

4 . The crossbow crank of claim 1 , comprising a crank arm engaged to the shaft.

5 . The crossbow crank of claim 4 , comprising a moveable pin arranged to release said crank arm from said shaft.

6 . The crossbow crank of claim 1 , said release mechanism comprising a sleeve that surrounds said shaft.

7 . The crossbow crank of claim 6 , wherein said sleeve comprises a non-circular inner surface.

8 . The crossbow crank of claim 7 , wherein said shaft comprises a non-circular portion arranged to engage said non-circular inner surface of said sleeve.

9 . The crossbow crank of claim 1 , said release mechanism comprising a release lever that extends through said housing.

10 . The crossbow crank of claim 9 , wherein said release lever pivots with respect to said housing.

11 . The crossbow crank of claim 1 , said shaft comprising a first shaft, said crossbow crank further comprising a second shaft rotationally engaged to said first shaft.

12 . The crossbow crank of claim 11 , wherein said first shaft comprises a crank arm.

13 . The crossbow crank of claim 12 , wherein said second shaft comprises a spool.

14 . The crossbow crank of claim 11 , wherein said second shaft is arranged to rotate at a different speed from said first shaft.

15 . The crossbow crank of claim 11 , wherein said first shaft comprises a first gear, said second shaft comprises a second gear, and said first gear is engaged with said second gear.

16 . The crossbow crank of claim 15 , wherein said first gear and said second gear each comprise a plurality of teeth, said first gear having a different number of teeth than said second gear.

17 . The crossbow crank of claim 1 , comprising a retraction spring arranged to bias said shaft in a second rotational direction.

18 . The crossbow crank of claim 1 , comprising a biasing member arranged to bias said release mechanism to its first position.

19 . The crossbow crank of claim 1 , comprising a guide slot in said housing, a cocking string passing through said guide slot.

20 . A crossbow crank comprising:
a housing; a shaft rotatable with respect to said housing; a roller clutch mechanism arranged to allow rotation of said shaft in one rotational direction; and a release mechanism arranged to disengage said roller clutch from said shaft.

Assignees

• Mcp Ip Llc

Inventors

• Mcpherson Mathew A
• Hayes Mark
• Ozanne Jeffrey A
• Koshollek Tom

Classifications

• F41B5/1469 Primary

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

• F41B5/123

  Compound crossbows · CPC title