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Class Information
Number: 212/168
Name: Traversing hoists > With means to project load engager beyond end of boom
Description: Apparatus wherein means are provided for propelling or positioning a load-engaging means suspended by flexible cable beneath a boom* outwardly from its position under the boom toward the load.

Patents under this class:

Patent Number Title Of Patent Date Issued
8640896 Angle adjustment of a jib system Feb. 4, 2014
7926670 Truck mounted telescopic boom structure including a stowable jib boom with a stowable personnel basket Apr. 19, 2011
7878346 Adaptable boom extension for a mobile crane having a telescoping boom Feb. 1, 2011
7516858 Crane boom Apr. 14, 2009
7337912 Automatically deployable boom extension and method of deploying same Mar. 4, 2008
7258242 Mobile crane boom having an autarchic hydraulic power unit mounted thereon Aug. 21, 2007
7131548 Folding pinnacle bending device Nov. 7, 2006
6837671 Apparatus for precisely manipulating elongate objects adjacent to and such as energized overhead high voltage transmission lines Jan. 4, 2005
6672467 Articulating truss boom Jan. 6, 2004
6536615 Load moment indicator of crane Mar. 25, 2003
6336565 Articulating truss boom Jan. 8, 2002
6186346 Multi-position low profile boom nose Feb. 13, 2001
6036035 Apparatus and method for extending and storing jib of crane Mar. 14, 2000
5853150 Aircraft loading and unloading system Dec. 29, 1998
5226776 Foldable link rod for carrying an operative platform Jul. 13, 1993
5193698 Jib stretching and folding device for use in a crane Mar. 16, 1993
5143233 Jib stretching and folding device for use in a crane Sep. 1, 1992
5135118 Jib hold rod securing device for cranes Aug. 4, 1992
5115923 Method for stretching and folding a jib for crane May. 26, 1992
5111945 Boom extension alignment device May. 12, 1992
5076449 Load measurement system for boom mounted auxiliary arm Dec. 31, 1991
4967917 Jib derricking gear for a crane Nov. 6, 1990
4746024 Aerial boom with tensiometer May. 24, 1988
4595108 Method for stretching and folding extension jib in wheeled type crane Jun. 17, 1986
4437573 Boom rack for handling and positioning cargo tie down equipment Mar. 20, 1984

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