Michael A Wisniewski

52578917, Nov 2, 1993

Sep 30, 1992

7/954946

James A. Baumann - Orland Park IL
Michael A. Wisniewski - Blue Island IL

Mi-Jack Products, Inc. - Hazel Crest IL

B66C 1306

414460

A crane and lift apparatus for controlling the lifting and lowering of large cargo containers. A trolley assembly includes a hoist drum from which is suspended a system of cable or rope reevings connected to material securing assembly. The apparatus is effective to unload containers stacked one above another from one location to an alternate location. The system of cable reevings permits the raising and lowering of containers in planes defined by X, Y, and Z axes. The cables are deployed from the hoist drum on the trolley assembly to sheaves disposed at the four corners of the material securing assembly and then returned to anchor assemblies secured to an undercarriage of the trolley assembly. The sheaves are selectively angled and located in headblock assemblies positioned on the material securing assembly. A system of brakes controls movement of the cables through the sheaves.

20160332846, Nov 17, 2016

May 13, 2015

14/711320

- Hazel Crest IL, US
Michael Wisniewski - Mokena IL, US
Robert P. Marcinski - Glenwood IL, US
Eric Van Gorp - Schererville IN, US

B66C 19/00
B66C 9/12

According to one aspect, a supporting truck for a crane comprises a load bearing member and a frame rigidly coupled to the load bearing member. A plurality of substantially equally spaced and substantially equally sized wheels is rigidly journaled in the frame at substantially equal heights such that the wheels have a single degree of freedom comprising rotational movement with respect to the frame and the load bearing member. The load bearing member and the frame have a moment of inertia of at least a particular value to cause the wheels to experience substantially equal loading by forces applied to the load bearing member.