Class 212/303 - Gear or screw drive to extend foot

Subclass of Class 212 - Traversing hoists
Definition: Subject matter wherein said ground engaging stabilizing
No. of patents: 24
Last issue date: 05/13/2008

Number	Title	Issue Date
7370769	Hoist for retrieving and lifting loads A hoist for retrieving, lifting and positioning a light load of up to about 1000 lbs, is described. The hoist comprises a boom support column having an attaching lower end and a boom support upper end. The boom support upper end has a boom assembly connector and a t...	05/13/2008
7328810	Crane supporting apparatus A crane support consisting of a steel square tubing pedestal having an apertured mounting plate fixedly attached to its upper end, and having an enlarged base fixedly attached to its lower end; an axle, the pedestal being mounting rotatably upon the axle; an auxilia...	02/12/2008
7178682	Traveling crane The invention pertains to a traveling crane consisting of a superstructure that can be turned about an upright axis and carries a crane jib with hoisting means, a truck with a tracklaying gear that carries the superstructure and a supporting device with several outr...	02/20/2007
7172083	Mobile hydraulic hoist A mobile hydraulic hoist unit which is readily maneuverable to a position straddling a load and then conveniently operated to lift and securely transport such load over a variety of terrains and surfaces and to safely and accurately deposit that load at a specific l...	02/06/2007
7021606	Vertical panel lift The present invention is a lightweight apparatus related generally to lifting heavy objects of construction materials by a single individual, such as panels of sheetrock to inside or outside walls, easily accommodating walls up to 12 feet in height, including angled...	04/04/2006
6926120	Masonry project kit Masonry project kits assist with building basements. In the course of building a basement, it is frequently necessary to climb over and lift equipment over walls. A wall hanger is provided to attach a ladder to the side of a wall. The ladder's height can be adjusted...	08/09/2005
6685039	Outrigger assembly for support of mobile cranes, excavators and the like on the ground An outrigger assembly for support of a mobile crane or excavator upon the ground, includes a plurality of outriggers mounted to a vehicle frame and having free ends, wherein each of the outriggers has a ground-engaging pad connected to the free ends for v...	02/03/2004
6138845	Crane vehicle An automotive vehicle, in particular crane vehicle, has a chassis comprising a framework provided in the longitudinal axis of the vehicle. A slew ring is supported on the framework, and a superstructure which can be slewed relative to the chassis rests on...	10/31/2000
5797504	Portable hoisting system A hoisting system for lifting construction items at a construction site that includes a base assembly, a telescoping pole assembly carried on the base assembly, a slidably positionable line guide assembly slidably mounted to the telescoping pole assembly,...	08/25/1998
5758785	Lifting system A lifting system for removing and installing equipment on aircraft. The lifting system comprises a base and a lifting assembly supported by the base. The lifting system also comprises linear outriggers and at least one offset outrigger. The linear outrigg...	06/02/1998
5054805	Trailer landing gear cushion foot A cushioned landing gear foot is attached to the landing gear leg by a tubular suspension axle within a housing abutment member on the lower end of the leg, and which abutment engages a resilient pad in a pocket on the foot when under compression load. Th...	10/08/1991
5022810	Gurney A transfer device is provided for moving an object from a first location to a second location, in particular a gurney for transporting a hospital patient. The device includes a litter mechanism for carrying the object to be transported thereon and a suppo...	06/11/1991
4889357	Parking stand for supporting the tongue of a parked trailer A parking stand for supporting the tongue of a parked trailer. The parking stand has a coupling ball at its upper end for engagement in the socket of a coupling part on the front end of the trailer tongue and a castor wheel or fixed base at its lower end ...	12/26/1989
4863184	Tractor-trailer landing gear mechanism and method of using same A tractor-trailer landing gear mechanism for helping support a trailer end, includes a pair of elongated extendable and retractable telescoping legs. A reversible electrical motor interconnects the legs, for causing them to be retracted or extended to a d...	09/05/1989
4815757	Rapid development surveillance vehicle and method A rapid deployment surveillance vehicle is disclosed for detecting illegal immigration across national borders and the like. An off-the-road vehicle (V) is equipped with a rapid mast erection/retraction assembly (A) which includes a carriage mechanism (24...	03/28/1989
4746263	Vehicle bumper stored crane hoist A telescoping hoist assembly normally stored in the rear bumper area of a pickup truck includes a boom telescoping into and out of a mast pivotally anchored at one end of the pickup bumper structure. A power winch operated by the pickup electrical energiz...	05/24/1988
4706825	Portable folding bridge crane A portable folding bridge crane comprises a power unit having a folding tongue assembly for enabling the unit to be towed as a trailer by a vehicle, a crane rail assembly carrying a movable bridge crane thereon, a pair of support members pivotally connect...	11/17/1987
4597498	Mobile maintenance stand and crane apparatus A mobile maintenance stand for servicing and transporting ejection seats utilized in aircraft includes a mobile platform having disposed thereon upright arms adapted to encompass an ejection seat and rotatable to expose the various portions thereof for se...	07/01/1986
4449734	Mechanical locking outrigger hydraulic jack for an outrigger assembly A mechanical locking outrigger hydraulic jack for an outrigger assembly for use with cranes and the like includes vertically disposed cylindrical fixed and movable members, the fixed member being secured to a vertically disposed external sleeve. A variabl...	05/22/1984
4419038	Bumper mounted foldable crane hoist A foldable hoist assembly has an elongated column with a boom pivotally mounted at its outer end to be moveable from a stored position alongside the column to its operating position. A spindle with radial and thrust bearings in the support column base pro...	12/06/1983
4397396	Truck crane having an elongated main frame A mobile truck crane having an elongated main frame that forms the carriage for the crane as well as forming a fore and aft elongated outrigger for stabilization in the crane operative position. A pair of transversely swingable outriggers are attached int...	08/09/1983
4394912	Mobile crane having telescoping outriggers and power operated screw means for same A mobile crane having an extensible boom which is swingable about both a vertical and horizontal axis and having telescoping outriggers that extend transversely of the main frame of the crane and which outriggers are also pivotally mounted about a vertica...	07/26/1983
4386711	Crane having stabilizer outriggers and vertically positionable jacks for same A crane having outriggers that can be extended transversely of the main frame of the crane, and a vertically positionable jack is located at the outer ends of the outriggers and include a vertical, threaded shaft having a ground engaging pad at its lower ...	06/07/1983
3989277	Motor home support A motor home support for preventing horizontal and vertical sway of a motor home. A vertical mounting plate has a fixed horizontal arm secured thereto. A rotatable screw whose axis extends parallel to the axis of the horizontal arm is secured adjacent to ...	11/02/1976

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Class 212/303 - Gear or screw drive to extend foot