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| Number | Title | Issue Date |
| 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 on which a main boom and a derrick boom are arranged and having a ball... | 05/19/2009 |
| 7389888 | Mobile crane with ballasting The present disclosure relates to a mobile crane comprising an undercarriage and a superstructure arranged in a revolving manner thereon with a device for the reception of ballast. In accordance with the present disclosure, the device for the reception of ballast co... | 06/24/2008 |
| 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 and a backmast. The boom and backmast are each hinged about an associa... | 05/13/2008 |
| 7341157 | Enclosed-reeving, live-line boom A crane comprising a boom formed as an elongate tubular structure and a line assembly to extend a line from a least one end of the boom. The line assembly may include a first bank of sheaves, a second bank of sheaves, a line reeved around the first and second banks ... | 03/11/2008 |
| 7340373 | Weight detecting apparatus for crane and crane having the same A weight detecting apparatus for a crane includes a base machine comprising a lower traveling body and an upper rotating body; weights mounted on this base machine; ID (identification) tags which are installed on the respective weights and in which ID information on... | 03/04/2008 |
| 7293668 | Manual boom lift method and apparatus Manual boom lift apparatus and method involve a base having three support legs, a fulcrum configured to fixedly mount the legs, a boom member detachably mounted on the fulcrum, the boom member including on either end a counterbalance arm configured for detachably mo... | 11/13/2007 |
| 7290672 | Tower crane device A crane tower device includes a basket that supports a tower crane and sits within a bay formed by the vertical columns of a building under construction. The basket and the tower crane are supported by support stubs that are attached to the vertical columns. Because... | 11/06/2007 |
| 7290671 | Crane A crane performs a self-assembling/disassembling operation using a hoisting winch, a hoisting rope, and a hanging hook, and includes a sheave device for guiding the hoisting rope on an upper portion of a lower boom. The sheave device includes a first sheave on a rea... | 11/06/2007 |
| 7258242 | Mobile crane boom having an autarchic hydraulic power unit mounted thereon The present invention relates to a mobile crane boom having a self-sufficient energy supply arranged on it for supplying hydraulic energy to at least one hydraulic load arranged on the mobile crane boom. The supply of the hydraulic load arranged on the mobile crane ... | 08/21/2007 |
| 7213716 | Crane The within invention concerns a crane with a superstructure that rotates on a vertical axle, a boom coupled to the superstructure in such manner as to luff on a horizontal axle, luffing equipment for luffing the boom, and an operating ballast that counteracts the mo... | 05/08/2007 |
| 7168740 | Structure of mounting weight in forklift truck A structure of mounting a weight in a forklift truck which has a frame and the weight that is to be connected and fixed to the frame by a bolt and a nut includes a first hole, a second hole, a first fitting part and a second fitting part. The first hole is formed th... | 01/30/2007 |
| 7165691 | Counterweight attaching and detaching apparatus for crane In a counterweight attaching and detaching apparatus for a crane, the length of a suspension member is adjusted by an extendable member and links because the distance provided between the peak of a gantry and an upper surface of each of weights when the gantry is su... | 01/23/2007 |
| 7093729 | Ballasting device for a crane The device combines ballast blocks (3) that can be stacked onto a base frame of the crane, and a gripper (2) for handling these blocks, the gripper being designed to be connected, during use, to a handling means. This device comprises means of nonperma... | 08/22/2006 |
| 7037006 | Camera crane A camera crane has a boom arm pivotably connected to a post assembly. A track section is pivotably attached to the front end of the boom arm, and is leveled via leveling rods. The boom arm has a joggled section to provide clearance for a camera operator. A camera fr... | 05/02/2006 |
| 6688481 | Mobile crane A mobile crane, includes an undercarriage, a superstructure rotatably mounted on the undercarriage for supporting a counterweight, a slewable boom assembly and an operator's cab. At least one electric motor propels the undercarriage in an operating direct... | 02/10/2004 |
| 6631814 | Crane vehicle A crane vehicle is provided with a carrier and a rotating deck pivotable around a vertical axis thereon on which a boom swivellable around a horizontal axis is supported. Pallets are mounted at the projecting outer end of the rotating desk at both sides t... | 10/14/2003 |
| 6579016 | Camera crane A camera crane has a boom arm pivotably connected to a post assembly. The boom arm is extendible via an extension accessory kit. A track section is pivotably attached to the front end of the boom arm, and is leveled via leveling rods. The boom arm has a j... | 06/17/2003 |
| 6520358 | Crawler crane In the present crawler crane, an engine including a power plant for supplying driving pressure oil to a main winding drum, an auxiliary winding drum and a third drum is mounted on either left or right side of a revolving frame, a counterweight having a fr... | 02/18/2003 |
| 6474485 | Crawler traveling type working machine A crawler traveling type working machine, comprising: a lower traveling body provided with crawlers on left and right sides; an upper rotating body mounted on the lower traveling body through a rotating means, the upper rotating body having a first counte... | 11/05/2002 |
| 6450706 | Camera crane A camera crane has a boom arm pivotably connected to a post assembly. A track section is pivotably attached to the front end of the boom arm, and is leveled via leveling rods. The boom arm has a joggled section to provide clearance for a camera operator. ... | 09/17/2002 |
| 6296436 | Multipurpose counterweight housing and counterweight Construction equipment such as an excavator is provided with a counterbalance assembly positioned at the aft end of the construction equipment. The counterbalance assembly includes a pair of enclosures and a counterweight. The pair of enclosures is separa... | 10/02/2001 |
| 6293415 | Railborne mobile crane A railborne mobile crane mounted on a chassis with a superstructure, a counterweight and a boom which are arranged so as to be swivelable about a vertical axis of the superstructure. The superstructure is contoured so as to be within a prescribed clearanc... | 09/25/2001 |
| 6290009 | Swivel working vehicle When a conventional swivel working vehicle is constructed such that a real part of a swivel body is not extended beyond a traveling device in order to improve an operability at a small site, a balance weight must he significantly increased in weight so as... | 09/18/2001 |
| 6279764 | Hoisting device A hoisting device (1) comprises at least a hoisting mast (7), a foot (4) arranged on the underside and connected to the hoisting mast, and a lifting device (6) connected at least to the top of the hoisting mast (7). The hoisting device (1) is assembled fr... | 08/28/2001 |
| 6250484 | Counterweight for monorail hoists A counterweight for a monorail hoist. The monorail hoist includes a single support beam and a suspended hoist assembly which is supported for movement along the support beam. The hoist assembly includes a support member which is transverse to the support ... | 06/26/2001 |
| 6131751 | Counter weight handling system and boom parking device A crane having an upper works rotatably mounted on a lower works and a boom pivotally mounted on the upper works, wherein the crane further comprises an apparatus and method for lifting, positioning, and assembling a counter weight to the upper works. The... | 10/17/2000 |
| 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 primary cylinder includes a first rod connected to a first pisto... | 04/18/2000 |
| 5941401 | Counterweight handling system for ring supported cranes A ring-supported lift crane is provided with a counterweight handling system to facilitate repositioning of the crane. The ring-supported crane includes a ring, a crane upper works and a crane lower works, a boom supported on rollers on the ring and a cou... | 08/24/1999 |
| 5899347 | 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 offset from the pivot axis. The counterweight has a cente... | 05/04/1999 |
| 5884785 | 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 offset from the pivot axis. The counterweight has a cente... | 03/23/1999 |
| 5833268 | Counterweight hoisting mechanism The invention provides a self-mounting counterweight device which is mounted to one end of the chassis frame of the vehicle. The counterweight is U-shaped having two vertical sides and an outward wall defining an internal enclosure. The counterweight incl... | 11/10/1998 |
| 5799806 | 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 offset from the pivot axis. The counterweight has a cente... | 09/01/1998 |
| 5690360 | Supplementary weight for a vehicle A supplementary weight for ballasting a vehicle can be adapted to be hooked onto a carrier component. The weight includes an entry opening which is bordered by an upper leg and a lower leg. The upper leg is supported on the carrier component which project... | 11/25/1997 |
| 5690359 | Supplementary weight for vehicle ballasting A supplementary weight for ballasting a work vehicle includes locating pins which project therefrom. The weight has a pin bore which receives the locating pins and the locating pins are at least partially retractable into the weight. The supplementary wei... | 11/25/1997 |
| 5671932 | Camera crane A camera crane for use in motion picture and television productions, has a mast on a wheeled chassis. A weight bucket on the chassis around the mast securely holds counterweights used to balance arm. The steering section of the mobile base can be pivoted ... | 09/30/1997 |
| 5615784 | Crane counterweight installation and removal apparatus A counterweight installation and removal apparatus for a truck-mounted crane includes a counterweight having a bottom surface, a plurality of rollers attached to either the bottom surface of the counterweight or to a crane carrier deck, and at least one i... | 04/01/1997 |
| 5603239 | Gyroscopic virtual counterweight for cranes A large gyroscope adapted to be used in place of, or in addition, to the counterweights normally used on a crane to keep it from tipping when hoisting a load. The gyroscope is of fixed mass such that all road permits and restrictions can be satisfied with... | 02/18/1997 |
| 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 such that, upon the imposition of a load on the main boom of ... | 12/24/1996 |
| 5524777 | Lifting apparatus for a transfer device A lifting apparatus mountable on a rotatable platform for transferring counterweights. The lifting apparatus includes a lifting element having an upper, stationary cage, and a lower cage rotatable relative to the upper cage, each being composed of a tube ... | 06/11/1996 |
| 5462309 | Stackable counterweight arrangement Counterweights are useful in stabilizing a work machine to increase the traction to a pair of wheels on one end when a implement is attached to the opposite end of the machine. The subject counterweight arrangement includes a base weight which is removabl... | 10/31/1995 |
