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| Number | Title | Issue Date |
| 7686174 | Vehicle crane with a telescopic boom, as well as process for assembling and disassembling the anchor supports of the telescopic boom The within invention concerns a vehicle crane with a telescopic boom that can move on a horizontal axle and rotate on an upright axle with a pivot section, telescoping sections that can telescope out of the pivot section, and also with two anchor supports flexibly h... | 03/30/2010 |
| 7624882 | Tie-back system for cranes, in particular heavy load offshore cranes The invention relates to a tie-back system for a crane comprising a rotatable base with a generally vertical support frame and a lifting arm which is with a lower end hingedly connected to the base in a hinge point, an upper part of the frame carrying a displacement... | 12/01/2009 |
| 7565982 | Crane and boom hoisting device thereof A boom hoisting device comprising a mast having a pivotable front end portion connected to a front end portion of a boom through a guy line, a mast-side spreader provided at the front end portion of the mast, a frame-side spreader removably mounted to an upper rotat... | 07/28/2009 |
| 7380677 | Crane, as well as a process for raising its boom The within invention concerns a crane with a rotating platform that can rotate on a vertical axle, a boom that is connected to the rotating platform and which can luff on a luffing axle, guying connected on the one hand with the boom and on the other hand with a guy... | 06/03/2008 |
| 7311213 | Crane A crane including a cabin provided on the left or right side, a boom raised and lowered around a pair of boom feet provided on the left and right sides of the base of the boom, and a gantry provided behind the boom. The boom foot on the side of the cabin is located ... | 12/25/2007 |
| 7216774 | Crane The present invention provides a crane where a spreader retainer is disposed on a rear surface of an extreme end of the lowest boom portion used both for a tower boom and a normal boom, a distance between an upper spreader, which constitutes a boom raising/lowering ... | 05/15/2007 |
| 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 |
| 7213717 | Telescopic boom The within invention concerns a telescopic boom of a crane with a pivot section, telescopic sections that can telescope out of the pivot section, and a guying that has at least one guy stand housed to pivot on one of the sections, and at least one guy cable supporte... | 05/08/2007 |
| 7172082 | Mobile crane with a telescopic main boom A mobile crane includes an under carriage, a superstructure that is rotatably mounted on the superstructure, and a main boom, which is composed of a base body and several telescopic lengths up to a predetermined maximum number, which slide into one another and can b... | 02/06/2007 |
| 7111745 | Boom for a load handling machine A boom for a load handling machine, the boom has a mounting by which the boom is mounted on a body of the machine, and at least first and second telescoped sections. In use, the boom carries a load handling implement at or towards its outermost end. The first boom s... | 09/26/2006 |
| 7086547 | Travelling working machine This invention provides with a travelling working machine comprising an upper rotating body with a rotating frame and winches, a pair of right and left boom support frames formed in the rotating frame, and axial portions of the winches mounted inside rear portions o... | 08/08/2006 |
| 7014172 | Electric hoist The present invention is to provide an electric hoist using a suspended electric winch that maintains a horizontal posture in any cargo handling operation. A hoist in one aspect includes a winch including a drum axially connected to a drive shaft of a motor, a suspe... | 03/21/2006 |
| 6941666 | Forklift mast position indicator A device which is attachable to the mast of a forklift for indicating to the forklift operator the tilt angle of the mast in a vertical plane centered on the forklift includes a pivotably supported weighted pendulum, and an elongated activating arm secured to the up... | 09/13/2005 |
| 6695158 | Crane with self-raising mast An apparatus and method of self-raising a mast for a crane having an upper works rotatably mounted on a lower works and a boom pivotally mounted on the upper works, the boom being supported by boom hoist rigging and a mast pivotally connected to the upper... | 02/24/2004 |
| 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 |
| 6481587 | Pendant-supported telescoping boom crane A telescoping boom crane having a multi-sectioned, telescopically extending boom and an extensible pendant support system. The extending boom includes boom sections that are extensibly receivable within the adjacent boom section. The boom sections are mad... | 11/19/2002 |
| 6474487 | Ring lifting crane A ringlift crane having a ring which can be elevated and forms an annular track. Arranged within the ring is a standardized undercarriage from a first crane class and a standardized upper carriage, which is connected for stewing action to the undercarriag... | 11/05/2002 |
| 6089388 | Mobile crane A counter-jib on which ballast can be hung and a hydraulic ram which can swivel said counter-jib both being falcrumed on a supporting frame. The frame is bolted at at least two connecting points to the rotating deck in such a way that after the creation o... | 07/18/2000 |
| 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 relatively restricted space without interference from obstacles ad... | 05/23/2000 |
| 6062405 | Hydraulic boom hoist cylinder crane A crane having an upper works rotatably mounted on a lower works, a boom pivotally mounted on the upper works, and a hydraulic boom hoist cylinder to control the angle of the boom. The crane further comprises a mast and a hydraulic cylinder pivotally conn... | 05/16/2000 |
| 5960970 | Multiple position wire rope guide A crane having an upper works rotatably mounted on a lower works, a boom comprising a boom butt and a boom top, a load hoist line, and a wire rope guide connected to the boom butt. The wire rope guide is pivotable between a first position on the end of th... | 10/05/1999 |
| 5799807 | Mobile crane The present invention relates to a mobile crane with a telescoping jib hinged to its superstructure which jib can be luffed by a luffing ram which is hinged to the telescoping jib and the superstructure, with a guy pole hinged on the rear side of the tele... | 09/01/1998 |
| 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 |
| 5443169 | Crane backhitch A crane gantry assembly includes a gantry pivotally connected to a crane bed, a backhitch pivotally connected to the gantry and detachably connected to the crane bed, and a control link pivotally connected to the backhitch and to the crane bed. The contro... | 08/22/1995 |
| 5393194 | Game handling apparatus A game-handling apparatus which is mounted on a four-wheel all-terrain vehicle having a winch fixed to the vehicle with a winch line wound on a winch drum in the winch, the game-handling apparatus including a first roller mounted on the front of the vehic... | 02/28/1995 |
| 5240129 | Heavy duty crane with self-retracting/erecting live mast A traveling crane incorporates a self-retracting/erecting live mast or the like, pivotally mounted on the base unit and capable of moving to and from a flipped, stowed position on the opposite side of vertical from the positions of the normal operating mo... | 08/31/1993 |
| 5137161 | Boom support assembly A boom support assembly for an earth working machine, which includes a winch, a pair of tension members and a pendant pin link interposed between tension members. The first tension member is a boom support pendant secured to a boom point of a boom and the... | 08/11/1992 |
| 5020962 | Apparatus for dismantling buildings A building is rapidly and inexpensively dismantled by dropping a heavy inverted U-shaped tool on a building or other structure from an elevation thereabove as from the upper outer end of a boom on a crane, the tool is initially suspended from a cable lead... | 06/04/1991 |
| 4982853 | Reinforcement mechanism for multi-stage telescopic boom A multi-stage boom having a plurality of boom members including a first boom member, at least one intermediate boom member and a last boom member, each being slideably inserted into its subordinate boom member to undergo telescopic expansion and contracti... | 01/08/1991 |
| 4892201 | Jib system for cranes, especially mobile cranes A telescopic outrigger is swivel mounted and disposed so that it can be moved in the longitudinal direction in an jib trough. When the telescopic jib is in its horizontal or slightly inclined operating position, it is situated in the jib trough. In order ... | 01/09/1990 |
| 4708251 | Method and apparatus for removing a crashed aircraft Crane for lifting and removing aircraft wreckage that is immobilized on a landing strip. Two twin beams are provided bevel-hinged at one of their ends. A gantry including legs which are affixed to the free ends of the beams. The gantry is shaped like an i... | 11/24/1987 |
| 4651884 | Portable and collapsible derrick structure A pickup truck derrick assembly includes a base frame, a derrick A-frame pivotally mounted on the base frame, a derrick frame erection subassembly, a frame support and locking subassembly and a cable compensation system. In one form, the frame erection su... | 03/24/1987 |
| 4582205 | Modularized pedestal-mount crane and method of disassembly A modularized pedestal mount crane having a base frame with a pair of fore and aft extending flanges with a boom pinned to the forward end of the flanges and an engine is mounted on the rearward portion of the flanges. A winch frame, carrying a plurality ... | 04/15/1986 |
| 4579234 | Self-erecting mobile crane A self-erecting traveling crane having a machinery platform rotatably mounted with respect to a carbody utilizes a concentric support ring, a boom foot carrier pivotably mounted to the platform and rolling on the support ring, and a counterweight carrier ... | 04/01/1986 |
| 4574964 | Breakaway bail A breakaway bail for a pedestal mount crane pivotally attached to the gantry by a pin extending through bushings secured to a pair of parallel plates with a spacer between the plates aligned with the bushings. A beam having an upright flange is secured be... | 03/11/1986 |
| 4557391 | Method of controlling the angle of a pivotal boom with extensible sections A method and apparatus is disclosed for controlling the angle of a pivoted, pendant supported extensible boom and the mast-boom angle between working positions and a transport position. The structure for controlling the angle includes a wire rope driven b... | 12/10/1985 |
| 4557390 | Suspended counterweight control system An apparatus is disclosed for counterbalancing a load carried by a crane by a counterweight suspended from the mast of the crane. A counterweight height control system is provided for maintaining the counterweight a few inches above the ground during oper... | 12/10/1985 |
| 4544071 | External pendant pay-out system with anti-droop control An apparatus is disclosed for maintaining a predetermined mast-boom working angle of a pendant supported boom substantially constant during extension and retraction of the boom. One embodiment of the invention includes control means connected between the ... | 10/01/1985 |
| 4492312 | External pendant pay-out system with anti-droop control An apparatus is disclosed for maintaining a predetermined mast-boom working angle of a pendant supported boom substantially constant during extension and retraction of the boom. One embodiment of the invention includes control means connected between the ... | 01/08/1985 |
| 4492311 | Coupling and latching mechanism for extensible boom A coupling and latching mechanism for a multisection extensible boom that includes a manual section and is operable from a remote location such as the cab of a crane. The mechanism includes pairs of spaced jaw type couplings secured to adjacent boom secti... | 01/08/1985 |
