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7546928 |
Mobile lift crane with variable position counterweight
A mobile lift crane includes a carbody having moveable ground engaging members; a rotating bed rotatably connected to the carbody such that the rotating bed can swing with respect to the ground...
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7533779 |
Lattice mast crane with a derrick boom
The present invention relates to a lattice mast crane having a traveling gear, a swiveling crown arranged on the traveling gear and a revolving deck which is rotatable via the swiveling crown and...
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7370767 |
Mobile crane
The embodied mobile cranes have a travelling base structure that allows for travel of the crane over a surface. The cranes have a revolving superstructure mounted on the base structure and a boom...
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7331476 |
Lifting appliance
A machine for lifting and handling loads with an orientable articulated placing jib, comprising a mast with a rotating pivot, an articulated jib ( 16 ) comprising a jib foot ( 19 ), articulated at...
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6871427 |
Construction machine and self-attaching and-detaching method thereof
The construction machine according to the present invention comprises a lower running body, an upper turning body mounted free to turn on the lower running body, and a connecting bracket arranged...
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6860395 |
System and adding hydraulic fluid to the balancing line of a jib of a level luffing crane
A fluid supply line 13 connects the hydraulic fluid supply pump 11 to the hydraulic balancing pipe 9 , and this line 13 is fitted with a solenoid valve 15 . Position detectors 17, 18 are...
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6821081 |
Loader with extending bucket and counter balance
A small loader machine of the skid-steered type having a counterweight to balance heavy loads in the loader bucket. The bucket is automatically extended forward as the counterweight is extended in...
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6644562 |
Dynamic counterweight mechanism for one-sided sprayers
A dynamic counterweight mechanism for one-sided sprayers is vertically fastened to a chassis of a conventional sprayer with a fixed frame ( 3 ) so as to move up and down in relation to the frame (...
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6568547 |
Crane, especially a self-propelled crane
A crane, especially a self-propelled crane, with a base structure and a revolving superstructure mounted thereon, a boom and a mast being hinged to the superstructure. The tip of the mast is...
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6561546 |
Pothole protection mechanism
A pothole protection mechanism for a lift machine includes a frame that is securable to the lift machine, a pothole protection bar movably coupled with the frame via a support linkage, and an...
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6516961 |
Ringlift crane
A ringlift crane having a ring which can be elevated, forms an annular track and has a plurality of segments which can be connected to one another, there being arranged within said ring an...
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6508372 |
Method for using a revolver crane, and a revolver crane
A method for using a revolver crane, comprising the positioning of a ballast on a platform ring in accordance with the repositioning of a load which is supported by a boom, is repositioned in...
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6499611 |
Mobile harbor crane for normal and heavy load operation
The invention relates to a mobile harbor crane for normal and heavy load operation, having an undercarriage and a superstructure mounted thereon. A tower is fastened on the superstructure and a jib...
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6494330 |
Variable length crane jib with automatic balancing
The rear extremity of the auxiliary arm 7, integral with each side of a throat pulley 10′, 10 ″ is joined to the front extremity of the main arm 3 around the spindle 6 . The arms 13′, 13...
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6341665 |
Retractable counterweight for straight-boom aerial work platform
An aerial work platform apparatus includes a shiftable counterweight which shifts in response to movement of the boom in order to maintain optimum balance of the apparatus during movement of the...
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6283315 |
Crane, preferably a derrick crane
The present invention is directed to a crane, preferably a derrick crane, having a traveling chassis (1), a revolving superstructure (2) mounted thereon in rotating fashion and connected with a...
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6109463 |
Lifting device with counterweight
A lifting device which includes a frame and an elongated boom having a lower end pivotally connected to the frame along a pivot axis. The lower end of the boom has a counterweight connected thereto...
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6102220 |
Crane jib
A crane jib includes a main boom arranged on a support base for rotation about a vertical pivot axis, and an auxiliary boom extending the main boom at one end and movable with respect to the main...
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6065620 |
Movable sheave assembly for a crane
A convertible crane with a movable sheave assembly which is operable in two distinct positions. In the first position, the sheave is adjacent the body of a crane to enable it to operate in...
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5890737 |
Pothole protection mechanism for a lifting device
A mechanism for preventing tipping of a lifting device having a main frame supported by a plurality of ground engaging support elements and a lifting element raisable and lowerable with respect to...
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5685563 |
Counterbalance system for short wheelbase vehicles
A counterbalance system for a vehicle having an axis of forward movement, a frame, and front and rear wheels spaced by a wheelbase dimension. A counterweight elides axially along a rail mounted to...
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5669517 |
Articulating boom incorporating a linkage counterweight
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...
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5586667 |
Mobile crane with main and auxiliary counterweight assemblies
A mobile crane has main and auxiliary counterweight assemblies and is arranged such that the spar or mast on which the auxiliary counterweight assembly is mounted is of a two-piece construction...
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5518128 |
Crane, particularly railway crane
A crane, particularly a railway crane, with a superstructure which is arranged on an undercarriage so as to be swivelable around a vertical axis, a jib and at least one counterweight which is...
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5395200 |
Gantry crane apparatus for an array of racks storing cassettes containing rod-shaped material
A gantry crane for storing (or removing) long cassettes containing rod-shaped material on (or from) racks for supporting such cassettes at both rack ends travels on rails raised above the bottom of...
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5348172 |
Industrial carrying machine
A mobile crane has a triangular wheel arrangement with a steerable front wheel and a frame for carrying an operator and a boom which is adjustable both as to vertical angle and azimuth. Shock...
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5332110 |
Tractor mounted hydraulic pipelayer with side boom
A tractor having a pair of endless, segmented, high drive tracks includes a side boom and a side-mounted counterweight. Boom angle is controlled by a boom winch with a load winch provided for...
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5253771 |
Counter-balanced, multiple cable construction crane
The invention is a counter-balanced, multiple cable construction crane. The apparatus for hoisting payloads comprises a crane having a lifting segment and a counter-balanced segment. The lifting...
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5222613 |
Pivotally-mounted reeved counterweight system
A pivotally-mounted reeved counterweight system for a counterbalance-type crane which includes a wheeled counterweight carriage supporting a counterweight. A yoke provides the coupling means...
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5203837 |
Balanced lifting crane
A crane has a generally horizontally disposed main boom arm centrally pivotally mounted on a turret supported for rotation atop a central column. The main boom arm supports a load at one end and a...
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5192180 |
Load-relieving device for servomotors adjusting the height of cantilever arms
An apparatus including a frame, a cantilever arm movably mounted on the frame, and a servomotor operatively connected to the frame and the cantilever arm for setting a height position of the...
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5131802 |
Vehicle equipped with balancing device
The invention relates to cargo-handling vehicles and the like which comprise a handling device such as a bucket or a fork. A balancing device in equipped either at the front or the rear of the...
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5088610 |
Handling machine to be suspended from a lifting unit
So as to avoid installing a heavy remote handling machine in a containment comprising a lifting unit, such as a travelling crane, the present invention proposes an autonomous remote handling...
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5064079 |
Knockdown hoist with double winches
A portable wheeled hoisting frame includes two winches. The hoist disassembles, and the parts fit into a backpack. When assembled the frame has an open rectangular base with corner wheels, two...
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5058911 |
Swivel tool tray
A swivel tool tray is provided and consists of an arm adjustably retained within a sleeve that is vertically affixed to an upper outside corner of a wheeled cart. A horizontal extension member is...
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5035337 |
Mobile crane with counterweight and auxiliary counterweight
The disclosed mobile crane for lifting heavy loads has a base on which a platform is rotatable on a vertical axis, a boom connected to the platform to swing in a plane containing the vertical axis,...
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5005714 |
Crane, in particular a large mobile crane
A crane, particularly a large mobile crane, including an undercarriage (1); a revolving joint (3) on the undercarriage (1); and a superstructure on the revolving joint (3). The superstructure...
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4995518 |
Detachable floating counterweight
A portable crane having an outwardly-extending counterweight arm and detachable counterweight for detachment therefrom, for transport of said crane separate from transport of the counterweight. The...
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4958815 |
Table equipment
Table equipment which comprises a frame, a table that can fix an object and move relative to the frame, a table guide for guiding the movable table on the frame, in a line inclined to the...
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4953722 |
Crane and lift enhancing beam attachment with moveable counterweight
A crane and an attachment comprising a counterweight support beam including a plurality of connected segments movable relative to each other, and having a fore end adapted to be connected to the...
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4867321 |
Variable reach crane jib with automatic balancing device
The invention provides a system for automatically balancing the jib of cranes of the type with articulated arms or telescopic arms depending on the variation of the reach of this jib. The annular...
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4861069 |
Adjustable vehicle counterweight device with cylinder positioning means
An adjustable vehicle counterweight device (10) with cylinder positioning means (62). The vehicle counterweight device (10) comprises a frame (16) for being secured to a motor vehicle, such as a...
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4726732 |
Conveying apparatus for ceiling-suspended industrial robot
A conveying apparatus for an industrial robot in which a first arcuate rail is fixed to a ceiling and extends parallel to a turning locus of a robot arm suspended form a ceiling surface. A second...
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4716729 |
Hydraulic drive system for a counterweight dolly in counterbalance type crane
A hydraulic drive system for counterweight dolly in a counterbalance type crane, including dolly driving wheels supported vertically movably through wheel supporting hydraulic cylinders at the...
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4711358 |
Counterbalancing type crane
A counterbalancing type crane including a crane body provided with a travelling unit and a swing unit, a tiltable boom for hanging a load through a hoisting line, a tiltable mast, a boom guy line...
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4696613 |
Arrangement for vertically positioning plate-shaped bodies
A positioning arrangement for use with a device having a fixed or movable crane arm includes a suction device for plate-shaped bodies which hangs from the free end of the crane arm, the suction...
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4664271 |
Stacker-reclaimer including counterbalance weight
A stacker-reclaimer with a luffing and slewing mounting supporting a boom structure with a main, forwardly extending boom having a material conveyor running along it, and a rearwardly extending...
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4567990 |
Self-balancing crane
A pivoted arm counterbalance system for a self balancing crane provides a counterbalancing moment exactly equal to the overturning moment of the crane by the utilization of a dynamic balancing...
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4540097 |
Crane with outboard counterweight carrier
Disclosed is a crane wherein a trailer-like counterweight carrier has a horizontal motion transmitting connection with a platform which is swivelably mounted on a crane base and which supports the...
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4529064 |
Gravity crane
A gravity crane which is manually operated by an operator who is harnessed to one end of a cantilevered balance beam. Clockwise moments are furnished by a fixed counterweight and by a adjustable...
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