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| Number | Title | Issue Date |
| 7357263 | Articulating jib An improved boom-mounted jib unit (10) is provided having an increased range of motion and work envelope, which allows a user to lift heavier loads an otherwise work with less jib interference, as compared with prior jib units. The jib unit (10) includ... | 04/15/2008 |
| 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 |
| 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 |
| 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 |
| 7163112 | Material transloading equipment The invention concerns a material transloading equipment unit with an undercarriage and a turntable connected with this undercarriage by means of a track ring, on which an arm that can be pivoted by means of at least one hoisting cylinder is pivot-mounted. According... | 01/16/2007 |
| 7004837 | Cashless gaming apparatus, system, and method of use The invention comprises methods and apparatus for modifying or converting a gaming machine to permit fully cash-less or optional cash-less transactions in a manner which avoids changing the existing firmware or software of the gaming machine. In an optional cash-les... | 02/28/2006 |
| 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 the pivot points of the boom of a lift vehicle and its main lift cyli... | 01/31/2006 |
| 6955025 | Self-erecting tower and method for raising the tower A tall tower is divided into an upper section with a tower top and a lower section with a tower bottom. The sections are hinged together. The lower section is hinged to a tower base. A telescoping crane is attached to a lift point on the lower section. The crane is ... | 10/18/2005 |
| 6918203 | Foot operated fishing net tipper The present invention relates to a foot operated fishing net tipping apparatus releasably attached to a fishing boat comprising: a boat-attaching portion, a net-holding portion, a lock portion, a foot pedal portion and connecting members. A conventional fishing net ... | 07/19/2005 |
| 6893189 | Pipelayer A pipelayer is provided which is capable of effectively transporting pipes or the like and stably carrying out load hoisting operation on a slope. The pipelayer comprises: an undercarriage; an upper revolving superstructure mounted on the undercarriage so as to turn... | 05/17/2005 |
| 6843619 | Apparatus able typically to transform a frame mounted on crawler tracks into a pipe playing machine An apparatus transforms a motorized frame mounted on crawler tracks and having a rotatable horizontal platform, into a pipeline laying machine or the like. A first structure is hinged to the platform on a horizontal axis at one end, at its other end, has a coupling ... | 01/18/2005 |
| 6550625 | Boom arrangement for work machine A boom arrangement for moving a work head, which boom arrangement comprises a pillar mounted on a bearing around the vertical axis in a rotating manner, with mounting and rotational members; a lifting boom; a transfer boom; a lifting cylinder arranged bet... | 04/22/2003 |
| 6488161 | Boom mechanism A boom mechanism that is cooperable with a lift vehicle or base structure includes a tower boom and an upper boom liftable in a dependent relationship by a single lifting mechanism. The tower boom and the upper boom are respectively pivotally secured to a... | 12/03/2002 |
| 6405492 | Mobile working apparatus In order to be able to shift a leader (18), which is disposed on a travelling chassis (10) via a carrying mechanism (16), both towards the front and also towards the rear into a substantially horizontal position, the carrying mechanism (16) has at least o... | 06/18/2002 |
| 6390312 | Lift structures and lifting arrangement therefor Load-bearing apparatus, such as a boom lift, including first and second arm portions, in which at least one element, such as a hydraulic cylinder, is provided for selectively imparting a predetermined dependent relationship as well as a predetermined inde... | 05/21/2002 |
| 6364142 | Hydraulic oil feed plunger cylinder A crane vehicle comprising a telescopic main boom which can be hydraulically configured by means of an assembly comprising a plunger cylinder and to which a derrick mast can be secured is provided with a plunger cylinder configured as a supply and dischar... | 04/02/2002 |
| 6328173 | Crane A crane having a hydraulically actuated jib system, at least one cylinder for actuating the jib system and an apparatus for monitoring the pressure in the cylinder, which indicates the crane loading, wherein the feed flow of hydraulic fluid to the cylinde... | 12/11/2001 |
| 6283699 | Container handling systems A mechanism for loading and unloading a container onto a tray attached or attachable to a track or trailer vehicle. The mechanism includes a transverse assembly at each end of the tray, each assembly incorporating a centrally mounted telescoping boom, a l... | 09/04/2001 |
| 6129226 | Vehicle mounted mini hoist In connection with a pair of pivotally connected articulating booms there is a pair of double-acting hydraulic cylinders which control the vertical pulling of well pipe, such that a boom assembly in conjuction with an improved winch assembly willgenerate ... | 10/10/2000 |
| 6079577 | Loader A loader composed of: a turntable (2) for connecting said loader to a machine base; a mounting plate (2a) connected to the turntable; a main arm (3) having a first end connected to the turntable; a secondary arm (4) articulated to the main arm (3); a lift... | 06/27/2000 |
| 6042328 | Lifting device A lifting device for attachment to a vehicle trailer hitch or the like. The device includes a hitch bar for attachment to the trailer hitch. A lateral extension arm is mounted on the hitch bar and a riser arm is rotatably mounted to the lateral extension ... | 03/28/2000 |
| 6019569 | Excavation machine A swing type front working mechanism 7 is provided, the front working mechanism 7 having a foot portion of a lower boom 8L of a boom 8 pivotally supported on brackets 12a through a pin 18. A cross-link 40 is connected between the bracket 12a and an upper ... | 02/01/2000 |
| 5944204 | Hydraulic boom compensation system for aerial devices An upper boom compensation system for an aerial device having an articulating boom assembly. The lower boom is raised and lowered by a special double cylinder having two pistons and a common piston rod. A hydraulic circuit is arranged to transfer fluid be... | 08/31/1999 |
| 5853283 | Vehicle lifting and towing method and apparatus A lifting apparatus is provided that is especially suited for mounting on a towing vehicle and for lifting a vehicle. The invention comprises an L-shaped member with a boom leg. The L-shaped member pivots on a base frame pivot and an upper pivot. Linkage ... | 12/29/1998 |
| 5494117 | Metal fence post driver A metal fence post driving apparatus is formed by a platform rearwardly supported by the three point hitch of a conventional tractor and having a fluid pressure generating unit on the platform driven by the tractor power takeoff. A mast having a top end p... | 02/27/1996 |
| 5423655 | Working machine for hydraulic excavator A hydraulic excavator includes a boom comprising an articulated first and second boom member, an arm, a bucket, a boom cylinder for operating the boom, an arm cylinder for operating the arm; and a bucket cylinder for operating the bucket. The boom cylinde... | 06/13/1995 |
| 5402898 | Crane having boom rest A truck mounted crane assembly includes a turntable lock, a boom rest which interacts with the piston and cylinder device, and a swing away hoist mount. The turntable lock includes a pin which is manually retractable upon rotation of a handle from a posit... | 04/04/1995 |
| 5282714 | Crane, particularly for material handling A crane for material handling is constituted by a boom (1) and a fixed column (2) for supporting the boom (1). The boom (1) is articulated for vertical swinging movement on and relative to a rotating device (3), mounted for rotation about a vertical axis ... | 02/01/1994 |
| 5240366 | Loader vehicle A loader vehicle comprising, a body having a front end and a rear end and provided with ground engageable propulsion means, an operator's compartment and a boom assembly which is pivotally mounted, at an inner end thereof, on the body, adjacent the rear e... | 08/31/1993 |
| 5216930 | Power work arm A device with a pivoting work arm for carrying and positioning a tool which is moved by a modified Watts linkage powered by a linear actuator having a true straight line motion. The modified Watts linkage has relatively short links resulting in the center... | 06/08/1993 |
| 5197615 | Crane A crane comprising a rigid column pivotally mounted on a support structure, an arm section connected to the column and comprising two arm portions which extend substantially parallel with one another, a maneuvering device which acts between the arm portio... | 03/30/1993 |
| 5188247 | Lifting apparatus A lifting apparatus that permits an object to be precisely lifted in a highly safe manner along a number of selected paths. The object to be lifted can be vertically raised along selected transversely spaced paths by vertically raising the lifting arms of... | 02/23/1993 |
| 5100278 | Railroad locomotive crane boom apparatus An improved locomotive crane boom generally indicated at 10 has of a first member 11, second member 12, and third member 13 each pivotally connected at various pivot points to one another and to locomotive crane 14. A series of pistons and cylinders, 19, ... | 03/31/1992 |
| 5082127 | Collapsible lift trolley The invention relates to a collapsible lift trolley capable of occupying a compact collapsed position and a deployed in-use position. In accordance with the invention, the collapsible lift trolley comprises a base unit having a turnable wheel, two longitu... | 01/21/1992 |
| 5076448 | Portable hydraulic crane The crane having a generally trapezoidal frame with a caster wheel at each corner. A mast is mounted on the front of the frame with a brace between each rear corner and top of the mast. Spring loaded pins are used for these connections. A lifting ram is p... | 12/31/1991 |
| 5064334 | Wheel clamp An apparatus for lifting a large tractor wheel includes a frame defined by feet and a post, which carries a bracket for rotation around the longitudinal axis of the post; a boom pivotally connected at one end to the bracket for rotation around a horizonta... | 11/12/1991 |
| 5034892 | Apparatus for suppressing vibratory or quaky movements of mobile type crane An apparatus for suppressing vibratory or quaky movements in travel of mobile type cranes, which facilitates the operation of re-starting the vehicle after temporarily stopping the engine, for example, at a gas station for fuel replenishment as well as op... | 07/23/1991 |
| 5029717 | Crane A crane or lifting device includes a base assembly with a telescopic and rotatable column mounting a boom assembly including a telescopic boom arm. A strap is connected at one end thereof to the base assembly, extends through the boom arm, and is connecte... | 07/09/1991 |
| 5016767 | Boom articulation mechanism with, simultaneously operable, cylinders A boom articulation mechanism for interconnecting and displacing a pair of boom members. The mechanism comprises a connector link having a pair of opposed external boom pivot connections. Each of the booms has a pivot end connected spaced apart to a respe... | 05/21/1991 |
| 5014863 | Vehicle mounted crane The possibility of the end 26 of a boom 20 of a vehicle mounted crane being moved downwardly into engagement with part of the crane or the vehicle on which it is mounted and causing damage thereto during elevation of a mast 18 for the crane from a stowed ... | 05/14/1991 |
