Matches 1 - 50 out of 176 1 2 3 4 >


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8910325 Lift apparatus and system  
A lifting apparatus for a lift system is disclosed. The apparatus includes a) a motor adapted for providing a lifting force, b) at least one connector operatively connected to the motor, the...
8831787 Power sensor  
Disclosed is an apparatus, system, and method for sensing the current supplied to a motorized hoist for raising a maintenance platform and providing an estimate of the operating status of the...
8708171 Boom for receiving loads on the end thereof, boom assembly with at least two such booms and method of manufacturing such a boom  
A boom (1) is used for receiving loads on the end thereof. The boom (1) has a metal boom hollow profile (2) extending along a boom longitudinal axis (3), and also a reinforcing layer (7) made of a...
8651301 Method of controlling rotation speed of motor of speed-controllable hoist drive, and hoist drive  
A method according to the invention of controlling a rotation speed of a motor of a speed-controllable hoist drive comprises receiving a lift speed instruction; forming a final speed instruction...
8646629 Crane jib construction comprising biased tensile elements  
A jib part (10) for a crane, in particular a mobile crane, a includes an inner shaping shell (15), tensile elements (11) within hollow profiles (12) and a sheathing, made from a layer of...
8272521 Crane moment load and load delivery system control and method  
The present invention is a crane operating system and method which monitors the crane moment load in order to keep the crane within the safe operating envelope. In determining the current crane...
8235230 Method for controlling the slewing movement of the rotary part of a tower crane  
A rotary part of a crane is associated with an electric slewing mechanism including at least one geared electric motor unit of which the electric motor is powered in such a way as to produce a...
8200401 Determining and reconstructing changes in load on lifting gear  
The invention relates to a method of determining changes in loads on lifting gear, whereby a change in load is determined within load curve data at a transition point of the load curve gradient,...
8177081 Lattice mast crane and lattice mast boom  
This invention relates to a lattice mast crane with a lattice mast boom to be luffed up in a vertical luffing plane, which comprises a pivot piece, a plurality of lattice pieces releasably...
8070413 Control system for a load handling apparatus  
A control system for a machine which includes a load handling apparatus for moving a load relative to a body of the machine. The machine includes a pivot about which a tipping moment is produced...
7970520 System arrangement of a lifting device, in particular for a container crane for the lifting of loads and moving for the operation of the system arrangement  
The lifting gear comprises two motors (1, 1′) that are connected to a transmission (6) via respective drive shafts (2, 2′), couplings (3, 3′), with fitted brake disks (4, 4′) or brake drums,...
7677401 Load monitoring and control system with selective boom-up lockout  
A method is disclosed for controlling a crane which comprises a boom that may be raised or lowered by angular adjustment of the boom about a base portion of the crane. The method prevents...
7558645 Overhead travelling carriage system  
A height sensor 26 and an image recognizing section 28 are installed in a teaching unit 24; the height sensor 26 contacts a pin 30a on a load port 4 to detect the height position of the pin 30a...
7490728 Crane  
A crane, in particular to an offshore crane, having a hoist rope winch, a hydraulic hoist winch drive and an overload protection which is connected to the hoist winch drive and which, when a...
7353959 Variable-speed load-dependent drive and hoist system  
In an embodiment, a crane including a hoisting (i.e., load-lifting) mechanism is provided with a variable-speed load-dependent control system and method for operating functions of the crane. An...
7267241 Device for determining a load on a hoist  
The invention relates to a device for determining a load on a hoist of a crane for handling a container, including rope drum, drive motor as well as hoist transmission disposed between drive motor...
7252203 Mobile crane having a superlift device  
A mobile crane with a carrier and a superstructure which is slewably arranged thereon has a superlift device with an SL counterweight for increasing lifting capacity. The SL counterweight can be...
7014054 Overturning moment measurement system  
A stability measurement system is provided for a lifting vehicle including a vehicle frame, a turntable secured to the vehicle frame and supporting lifting components of the vehicle frame, and a...
6994223 Diagnostic readout for operation of a crane  
A programmable control system for a crane that senses a hydraulic pressure of the lift mechanism, and controls the movements of the crane apparatus as a function of the magnitude of the hydraulic...
6991119 Measurement system and method for assessing lift vehicle stability  
A measurement system uses dual axis force sensor pins to effectively assess the tipping moment of a load-bearing vehicle and anticipate imminent tipping in any direction. The pins are installed in...
6985795 Material handler with center of gravity monitoring system  
A material handler that includes a frame, first and second front wheels, first and second rear wheels, and a control system. The front and rear wheels define a generally horizontal plane. The...
6843383 Jib load limiting device  
A load limiting device for a jib extension includes a pivotal insert adjacent the tip of the jib extension, a cable sheave mounted on the insert, a force measuring device for measuring forces...
6785597 Hydraulic stabilizer system and process for monitoring load conditions  
A process for monitoring load conditions on a lifting machine having a rated load moment includes determining an actual load moment of the lifting machine due a weighted load. The actual load...
6779961 Material handler with electronic load chart  
The present invention is directed to a material handler that includes a frame, a telescoping boom, a boom extension sensor, a boom angle sensor, and a control system. The telescoping boom is...
6735486 Side load detection and protection system for rotatable equipment  
A side load detection and protection system (10) operable using pressure sensors (26, 28) to determine side load as a function of a difference in media pressure between two ports (40, 42) of a...
6655662 Method for controlling crane brake operation  
The invention relates to a method for controlling the operation of a crane brake, the crane comprising an electric motor (2) controlled by means of a frequency converter (10) for hoisting and...
6634514 Control monitoring device for tower cranes  
The invention relates to a control monitoring device for tower cranes, in particular for small cranes, with integration of functions, and adapted for radio control. The device comprises, in...
6587795 Method for the overload protection of a mobile crane  
The invention relates to a method for the overload protection of a mobile crane, in particular of a crawler-mounted crane, in which component-related geometrical data are stored in a memory. In...
6578441 Crane testing apparatus and associated load testing method  
Two groups of test weights are stacked on a horizontal base frame transported to an aligned position underlying a crane to be tested for loading capacity. Such base frame is loaded with the test...
6536615 Load moment indicator of crane  
An load moment indicator, in a crane provided with hoist means of a main side and an auxiliary side, including a calculator in which a reference value if a rated load determined by the stability...
6527130 Method and system for load measurement in a crane hoist  
The invention provides a load measurement in a crane hoist system. A parameter adaptation process uses a model of the system in order to measure the lifted load. A controller monitors hoist speed...
6474922 Remote operation auxiliary hoist control and precision load positioner  
An electromechanical, remotely operated Auxiliary Hoist Control and Precision Load Positioner system and device is disclosed utilizing a Radio Frequency Hand Controller transceiver Unit distal to...
6405114 Aerial work platform boom having ground and platform controls linked by a controller area network  
An aerial work platform supported by a riser boom, a telescoping main boom, and a jib boom. Boom movement may be controlled by a platform control module or a ground control module connected to a...
6170681 Swing type machine and method for setting a safe work area and a rated load in same  
A method for setting a safe work area and a rated load in a swing type work machine, as well as a swing type work machine which utilizes the said method, are disclosed. An area where a...
6079576 Control device for a hoist mechanism of a crane  
The present invention relates to a control device for a hoist mechanism of a crane, preferably for a crane with a jib which can be varied in length and be luffed, with a hydraulic motor driving...
6062106 Side load sensor  
A side load sensor is provided for sensing the longitudinal load on a rotary worm which is used to rotate a turret on a utility vehicle and wherein a boom is mounted on the rotatable turret. The...
6050430 Automatic leveling and synchronization system for counterweight removal and installation  
The automatic leveling and synchronization system for raising and lowering a counterweight includes at least a primary and secondary cylinder connected in series hydraulic communication. The...
6044991 Load measuring apparatus for aerial booms and jibs  
A load measuring device for an aerial machine having a boom or jib which handles loads. A load bearing sheave has a winch line passed over it to raise and lower the load. A guide sheave maintains...
5992655 Caterpillar sideboom replacement assembly  
A replacement assembly is provided for retrofitting old, discontinued, mechanically-operated, low-drive, Caterpillar sidebooms with a hydraulically-operated fail-safe sideboom system. Conversion...
5877693 Method and apparatus for measuring the length of a multi-section telescopic boom  
The boom length measurement includes a transmitting unit mounted on the fly section of a multi-section telescopic boom, and a receiving unit mounted on the base section of the multi-section...
5813551 Crane vehicle  
The present invention relates to a crane vehicle with a jib, preferably a telescoping jib, hinged to its superstructure which jib can be luffed by a luffing ram which is hinged to the jib and the...
5803278 Overhead traveling carriage  
An overhead travelling carriage is provided wherein three drums are arranged on a base of a hoist unit along the sides of an imaginary equilateral triangle. Two motors and a brake are arranged...
5732835 Crane control device  
An object of this invention is to improve safety in a crane. A boom control signal αr and a winch control signal βr are simultaneously outputted to, respectively, a boom drive portion and a winch...
5711440 Suspension load and tipping moment detecting apparatus for a mobile crane  
The present invention relates to a suspension load and tipping moment calculating apparatus for a mobile crane which can calculate a suspension load and a tipping moment with high accuracy and use...
5597080 Snag load protection system for a crane  
A snag load protection system for a train including a guide frame, a sheave housing slidably received within the guide frame, and a hydraulic cylinder connected to the guide frame and to the...
5557526 Load monitoring system for booms  
A system for and method of monitoring the operation of a boom are disclosed. A first parameter is sensed, the first parameter being indicative of a load on a first boom component. It is determined...
5538149 Control systems for the lifting moment of vehicle mounted booms  
In a vehicle mounted digger derrick or crane, the moment applied to the boom by a lift cylinder is controlled in a customized manner to more fully utilize the structural strength of the machine at...
5392935 Control system for cable crane  
A cable crane system includes a main cable stretched between two points, a transverse trolley traveling along the main cable, a traction cable for driving the trolley, a bucket hung by a hanging...
5282136 Vertical releasing control device of crane hanging load  
For use where a hanging load 81 is vertically hung and released with a crane having either a jib or a boom which can be raised or lowered, or where a long hanging load 81 is raised from its...
5263597 Crane load instrument and method therefor  
A crane load detection system is provided having an electronic strain gage located in series with the deadline of the boom and located adjacent the gantry tie-down of the deadline of the boom. A...

Matches 1 - 50 out of 176 1 2 3 4 >