Crossbow cocking apparatus
View Patent ↗A cocking mechanism is disclosed. The cocking mechanism comprises an actuator assembly, a hand crank assembly, and a bow string hook assembly. The actuator assembly further comprises clutch assembly having a bearing housing, a bearing cage, a support axle and bearing elements. The bearing housing is defined by an inner peripheral surface having a plurality of inwardly extending annular ramps, wherein the bearing elements contact a portion of the ramps to prevent rotation of the support axle in a first direction, but allows for rotation of the support axle in a second direction when the actuator assembly is in a locked configuration. This provides for immediate braking action against any unforeseen forward motion of the bow string of a crossbow such as when inadvertently or accidently releasing the removable hand crank assembly during the cocking operation.
1. A cocking mechanism, comprising:
an actuator assembly comprising:
a main body;
a clutch assembly housed within the main body;
a support axle extending through the clutch assembly;
a pair of take-up spool housings disposed on opposite sides of the main body;
a pair of take-up spools disposed on the support axle and housed within respective take-up spool housing;
a cable eyelet mount comprising a pair of eyelets, the cable eyelet mount secured to the main body such that the eyelets are on opposite sides of the main body; and
a pulley mount comprising a pair of pulleys, the pulley mount disposed adjacent the cable eyelet mount such that the pulleys are on opposite sides of the main body;
a hand crank assembly removable mounted on the support axle; and
a bow string hook assembly.
2. The cocking mechanism of claim 1 , wherein the clutch assembly comprises:
an actuator lever;
a bearing housing;
a bearing cage disposed within the bearing housing; and
a plurality of roller bearings disposed within the bearing cage.
3. The cocking mechanism of claim 2 , wherein:
the actuator lever comprises an attachment portion having an opening;
the bearing cage and the opening in the attachment portion comprise one or more complimentary features configured for securing the attachment lever to the clutch assembly; and
the bearing housing and the main body comprise one or more complimentary features configured for inhibiting rotation of the bearing housing within the main body.
4. The cocking mechanism of claim 3 , comprising:
a collar integral with the support axle and seated within the bearing cage; and
a pair of axle bearings disposed on the support axle on opposite sides of the collar.
5. The cocking mechanism of claim 4 , wherein:
the bearing housing comprises an opening defined by an inner peripheral surface;
the inner peripheral surface comprises a plurality of annular ramps; and
the actuator lever comprises an actuator return spring configured to bias the actuator lever to a locked position when the actuator lever is released.
6. The cocking mechanism of claim 5 , wherein:
the support axle is rotatable in either direction when the actuator lever is moved to an unlocked position;
the support axle is rotatable only in a first direction when the actuator lever is in the locked position; and
the support axle is inhibited from unhindered rotation in a second direction when the actuator lever is in the locked position.
7. The cocking mechanism of claim 6 , wherein rotation in the second direction is inhibited by the interaction of the plurality of roller bearings, the inner peripheral surface of the bearing housing, and the integral collar on the support axle with one another.
8. The cocking mechanism of claim 5 , wherein the plurality of roller bearings operatively cooperate with the inner peripheral surface of the bearing housing and the integral collar on the support axle to inhibit unhindered rotation of the support axle in a second direction when the actuator lever is in the locked position.
9. The cocking mechanism of claim 1 , wherein the bow string hook assembly comprises:
a pair of hook members; and
a tension cable extending through the pair of hook members, wherein:
a section of the tension cable between the pair of hook members extends through the pair of pulleys; and
opposite ends of the tension cable extend through the pair of eyelets and are secured to the pair of take-up spools.
10. The cocking mechanism of claim 9 , wherein the pair of hook members are configured for being removably attached to a bow string on opposite sides of a crossbow; and
the cocking mechanism imparts substantially equal force onto the bow string when the tension cable is wound onto the take-spool.
11. The cocking mechanism of claim 1 , configured for being removably attached to a crossbow.
12. The cocking mechanism of claim 11 , comprising:
an alignment member extending from the cable eyelet mount; and
a mounting channel in the crossbow;
wherein the alignment member and the mounting channel comprise complimentary features.
13. The cocking mechanism of claim 1 , wherein the hand crank assembly is mountable on either side of the actuator assembly.
14. A crossbow assembly, comprising a cocking mechanism comprising:
an actuator assembly comprising:
a main body;
a clutch assembly housed within the main body;
a support axle extending through the clutch assembly;
a pair of take-up spool housings disposed on opposite sides of the main body;
a pair of take-up spools disposed on the support axle and housed within respective take-up spool housing;
a cable eyelet mount comprising a pair of eyelets, the cable eyelet mount secured to the main body such that the eyelets are on opposite sides of the main body; and
a pulley mount comprising a pair of pulleys, the pulley mount disposed adjacent the cable eyelet mount such that the pulleys are on opposite sides of the main body;
a hand crank assembly removable mounted on the support axle; and
a bow string hook assembly.
15. The crossbow assembly of claim 14 , wherein the clutch assembly comprises:
an actuator lever, comprising:
an actuator return spring configured to bias the actuator lever to a locked position when the actuator lever is released; and
an attachment portion having an opening;
a bearing housing comprising an opening having a plurality of annular ramps on a peripheral surface of the opening;
a bearing cage disposed within the bearing housing; and
a plurality of roller bearings disposed within the bearing cage;
wherein,
the bearing cage and the opening in the attachment portion comprise one or more complimentary features configured for securing the attachment lever to the clutch assembly; and
the bearing housing and the main body comprise one or more complimentary features configured for inhibiting rotation of the bearing housing within the main body.
16. The crossbow of claim 15 , wherein
the support axle is rotatable in either direction when the actuator lever is moved to an unlocked position;
the support axle is rotatable only in a first direction when the actuator lever is in the locked position; and
the support axle is inhibited from unhindered rotation in a second direction when the actuator lever is in the locked position.
17. The crossbow of claim 16 , wherein rotation in the second direction is inhibited by the interaction of the plurality of roller bearings, the inner peripheral surface of the bearing housing, and the integral collar on the support axle with one another.
18. The crossbow of claim 17 , wherein the bow string hook assembly comprises:
a pair of hook members configured for being removably attached to a bow string on opposite sides of the crossbow;
a tension cable extending through the pair of hook members, wherein:
a section of the tension cable between the pair of hook members extends through the pair of pulleys; and
opposite ends of the tension cable extend through the pair of eyelets and are secured to the pair of take-up spools; and
the cocking mechanism imparts substantially equal force onto the bow string when the tension cable is wound onto the take-spool.
19. The crossbow of claim 18 , wherein the cocking mechanism is removably attached to the crossbow.
20. The crossbow of claim 19 , comprising:
an alignment member extending from the cable eyelet mount; and
a mounting channel in the crossbow;
wherein the alignment member and the mounting channel comprise complimentary features.