Crossbow gearbox crank system

Designed to reduce crossbow draw pressure from
200 lbs. to under 12 lbs.

A crossbow manufacturer approached us with a request to design a crossbow cranking mechanism (used to cock or load the bow) which would be suitable for female and handicapped users. The rapid expansion in the popularity of crossbow hunting has opened the sport up to these population segments, yet this manufacturer did not have a crossbow cranking system that was easy enough to use. The manufacturer also wanted a gearbox design that could be quickly removed from the bow to reduce the carrying weight.


Frisella Design developed a cranking mechanism that would reduce a 200lb draw force to under 12 pounds, was ambidextrous, could be cranked with either left or right hand, and could be quickly removed from the bow after cocking.

• 3D Solid Design in SolidWorks™

• Precision Mechanisms

• Precision Linear & Rotary Motion

• Electro-Mechanical Systems

• Electro-Optical Devices

• Custom Automation Machinery

• Robotics Integration

• High Density Electronics Packaging

• Medical Devices

• Electronics Manufacturing Equipment

• Plastic Injection Molded Parts

• Rotomolded Part Design

• Rapid Prototyping

Phone: 727-446-3638

Fax: 866-611-4592

Skype calls:

Frisella Design LLC

621 Lakeview Road, Suite C

Clearwater, Florida 33756

Copyright © 2013 - 2019 Frisella Design LLC. All Rights Reserved. FRISELLA DESIGN is a trademark and service mark owned by Frisella Design LLC.  All other trademarks on this site are the property of their respective owners. All  images on this site are the property of Frisella Design LLC and/or their respective owners.  Copying and reuse is prohibited. Site design and maintenance by