USA As Represented by Secretary of the Navy

Garrett W Leavitt

James Sovel

Darryl G Updegrove

A slewing crane is assembled and installed at the end of a shipping and stowage container having block-shaped corner fittings. Left and right rotatable mounts engage top corner fittings on the container, and a cross piece section engages the rotatable mounts. A boom section has upper and lower hinges rotatably mounting it on the cross piece section via the hinges' axially aligned pins to extend outwardly from the cross piece section. A hoist on the boom section lifts and moves loads, and first and second displacement mechanisms connected to the boom section linearly displace the hoist and angularly displace the hoist and boom section in a slewing motion around the axis of the axially aligned pins. An element connected between the cross piece section and a corner fitting is tensioned by a turnbuckle to securely engage both rotatable mounts and hold the slewing crane on the container.

Removable externally mounted slewing crane for shipping containers

An X-Y bridge crane can be assembled and erected by workmen to lift and move loads at the end of a shipping and stowage container having block-shaped corner fittings at top corners and bottom corners. Rotatable top securing brackets engage the top block-shaped corner fittings and rotatable bottom securing brackets engage the bottom block-shaped corner fittings. Inner end portions of brace members are rotatably connected to the rotatable bottom securing brackets. A framework having inner extensions, outer projecting parts and a laterally extending hoist-traveling beam has inner extensions connected to the top securing brackets and outer projecting parts connected to the outer end portions of the brace members. A hoist is mounted on the hoist-traveling beam to lift and move loads on the framework, and first and second chainfalls connected to the hoist linearly displace the hoist in orthogonal directions.

Growing community of inventors

Panama City Beach, FL, United States of America

Garrett W Leavitt