Matthew Sean Fearon
Engineers in Bellevue, WA
License number
Utah 175942-2202
Issued Date
Jul 31, 1990
Expiration Date
May 31, 1996
Category
Engineer/Land Surveyor
Type
Professional Engineer
Address
Address
Bellevue, WA
Professional information
Articulating Boom Incorporating A Linkage Counterweight
US Patent:
5669517, Sep 23, 1997
Filed:
Jun 11, 1996
Appl. No.:
8/661925
Inventors:
James A. Donaldson - Puyallup WA
Matthew S. Fearon - Issaquah WA
Matthew S. Fearon - Issaquah WA
Assignee:
Genie Industries, Inc. - Redmond WA
International Classification:
B66C 2376
US Classification:
212196
Abstract:
A linkage mounted counterweight for offsetting a load at the free end of an articulated boom crane (20). The articulated boom crane (20) includes an articulated boom (23) that includes an elevate linkage (25) and a telescoping section (24) is disclosed. The elevate linkage (25) includes a lower section (42) and a mid section (44). The counterweight (60) is located on the lower section (42) near where the lower section (42) is hingedly attached to the base of the crane (20). As the articulated boom (23) is raised from a stowed position, the counterweight moves away from the tilting fulcrum (F) of the articulated boom crane (20) to assist in maintaining the stability of the crane.