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Class Information
Number: 212/901
Name: Traversing hoists > Dolley-type cranes
Description: A collection of art comprising a wheeled base supporting a mast, a boom, and a hoist means whereby the apparatus is sized to be pushed by the operator.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8407831 Patient positioning apparatus Apr. 2, 2013
7762757 Workpiece transfer system and workpiece transfer method Jul. 27, 2010
7544035 Manhole cover lift Jun. 9, 2009
7503743 Manhole cover lift Mar. 17, 2009
7428759 Patient lift with support legs that spread over two ranges of motion Sep. 30, 2008
7381024 LPG tank insertion apparatus for automobiles Jun. 3, 2008
7377741 Articulating loader with twin control arms, and methods of constructing and utilizing same May. 27, 2008
7371039 Slat replacement system May. 13, 2008
7210590 Transportation cart primarily for use in an animal barn May. 1, 2007
7172083 Mobile hydraulic hoist Feb. 6, 2007
7086820 Apparatus for the lifting and placement of loads Aug. 8, 2006
6910846 Slat replacement system Jun. 28, 2005
6899238 Methods and apparatus for supporting a davit arm May. 31, 2005
6821075 Hoist with trailer hitch attachment Nov. 23, 2004
6732871 Cargo transport and handling device May. 11, 2004
6694545 Lifting apparatus Feb. 24, 2004
6599078 Assembly for removably supporting cargo on a vehicle Jul. 29, 2003
6561367 Portable hoist and method May. 13, 2003
6499610 Portable hoist system Dec. 31, 2002
6371314 Hoisting device for all terrain vehicle Apr. 16, 2002
6321398 Multipurpose body-turn-over apparatus Nov. 27, 2001
6302581 Support system for a radiation treatment apparatus Oct. 16, 2001
6286695 Engine lifting and positioning assembly Sep. 11, 2001
6089809 Apparatus for lifting walls to a vertical position Jul. 18, 2000
6065621 Portable and towable lift mechanism May. 23, 2000
5993106 Restrainable manhole cover, handhole cover and the open/close device therewith Nov. 30, 1999
5946748 Multipurpose body-turn-over apparatus Sep. 7, 1999
5934490 Combination engine hoist and stand Aug. 10, 1999
5797504 Portable hoisting system Aug. 25, 1998
5758785 Lifting system Jun. 2, 1998
5690240 Dolly with detachable boom Nov. 25, 1997
5667352 Locking system for extension members on portable lifts Sep. 16, 1997
5584363 Locking system for stabilizers Dec. 17, 1996
5505578 Transportable hoist for lifting large vehicle wheels Apr. 9, 1996
5375963 Multipurpose lifting apparatus Dec. 27, 1994
5269501 Vehicle and vehicle parts transportation system Dec. 14, 1993
5259721 Apparatus for transporting/mounting a building material Nov. 9, 1993
5211297 Foldable crane May. 18, 1993
5211526 Mobile crane May. 18, 1993
5195726 Portable luggage carrier Mar. 23, 1993
5188247 Lifting apparatus Feb. 23, 1993
5082127 Collapsible lift trolley Jan. 21, 1992
5076448 Portable hydraulic crane Dec. 31, 1991
5064078 Combination portable hoist, crane, and vehicle towing apparatus Nov. 12, 1991
5064079 Knockdown hoist with double winches Nov. 12, 1991
5064334 Wheel clamp Nov. 12, 1991
5052566 Engine hoist and support apparatus Oct. 1, 1991
5011364 Portable article handling/supporting apparatus Apr. 30, 1991
4925039 Portable folding crane May. 15, 1990
4921385 Truck with a hand-operatable bed May. 1, 1990

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