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| Number | Title | Issue Date |
| 7891508 | Crane radial support bearing The present invention, in one embodiment, is a system for receiving and delivering into a base the radial loads imposed on a crane where the crane has a center post operably connected to the base with a generally cylindrical outer bearing surface and the crane rotat... | 02/22/2011 |
| 7419064 | Working machine At an inner circumference side of a lower ring and an upper ring, flange pars are formed respectively, and a ring-shaped clamp device is arranged at the inner circumference side, and separated at four points, into a front side, back side, left side, and right side, ... | 09/02/2008 |
| 7413092 | Construction machine A construction machine includes a vertical separating/connecting device interposed between a lower traveling body and a swing bearing that supports an upper rotating body. The device includes an externally toothed ring member fixed to the swing bearing with a first ... | 08/19/2008 |
| 7383906 | Rotatable and telescopic work machine The present invention is a rotatable work machine that includes a lower frame assembly having a recessed area in which the operator portion of an upper frame assembly and power source are at least partially positioned. Further, a method of manufacturing and assembli... | 06/10/2008 |
| 7367462 | Billboard advertising copy hoist system A hoist system can be used to raise articles. The hoist system can include a mounting structure attachable to a billboard structure, a pole member fastenable to a mounting structure and a winch assembly. The winch assembly has at least one component coupled to the p... | 05/06/2008 |
| 7350650 | Crane bearing assembly An upper bearing assembly for a pedestal crane comprises a partially dome-shaped kingpost head operably engaged by a bearing having a concave bearing face shaped to conform to a segment of said kingpost head, the bearing enclosed within a bearing retainer, the beari... | 04/01/2008 |
| 7338081 | Truck frame for a construction machine A left fore leg (31) is formed to shape by a casting means, integrating an inner joint portion (31A), an outer joint portion (31B) and an intermediate tubular portion (31C) into an unitary tubular structure. In this case, a joining end ( | 03/04/2008 |
| 7338080 | Truck frame for construction machine A vehicular body oscillating mechanism (31) is provided between a frame (3) of an automotive vehicular body (2) and a stabilizer (18) thereby to sway the vehicular body (2) arcuately in a rightward and/or leftward direction about a... | 03/04/2008 |
| 7293375 | Crawler frame for construction machine In a crawler frame in which legs in a center frame are formed from cast steel, a simple structure is achieved by reducing the number of components. To this end, the crawler frame, which has a center frame composed of a central frame section for supporting a swing be... | 11/13/2007 |
| 7293374 | Crawler frame for construction machine A crawler frame includes a center frame and right and left track frames disposed at right and left sides of the center frame so as to extend in a back and forth direction, wherein legs for connecting a central frame section of the center frame to the track frames ar... | 11/13/2007 |
| 7264129 | Device for slewing the column of a crane The invention relates to a device dedicated for slewing a crane column, which device comprises a fastenable crane base formed by a house which is open at the top and at the bottom and in which a lower tubular part of the crane column is rotatably journalled by means... | 09/04/2007 |
| 7204519 | Construction machine A construction machine where an operating load is transferred to a location having good rigidity, thereby ensuring the strength of a vehicle body and increasing the load-withstanding strength in relation to running loads. The frame of the lower traveling body of the... | 04/17/2007 |
| 7204518 | Construction machine A construction machine where a load acting on a vehicle body during an operation is transferred to ensure the strength of the vehicle body, thereby improving reliability including welding reliability. In the construction machine, at least one of the height differenc... | 04/17/2007 |
| 7111744 | Crane mount assembly for utility truck A crane mount assembly having a mounting base and tower, the base having a pair of longitudinal members in parallel spaced alignment with transverse members positioned therebetween, and a top and bottom plate secured between the longitudinal members and the transver... | 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 |
| 7025218 | Billboard advertising copy hoist system A hoist system can be used to raise articles. The hoist system can include a composite pole member having a bend, a mounting structure attachable to the composite pole member and a winch assembly. The winch assembly has at least one component attached to the pole. T... | 04/11/2006 |
| 6983856 | Portable crane The present invention discloses a portable crane having an elongated boom which attaches at one end to a lower end of a base frame member wherein the upper end of the boom has a stabilizer member attached thereto which stabilizer attached to the upper end of the bas... | 01/10/2006 |
| 6695157 | Rotary crane The foregoing invention concerns a rotary crane, especially an offshore crane of the king post type. The rotary crane has a pylon that can be permanently anchored on a floor plate, platform, or similar equipment, a turntable mounted to revolve on the long... | 02/24/2004 |
| 6631815 | Turntable of a rotary crane The present invention concerns a turntable of a rotary crane of the king post type having a pylon anchored to a base plate, platform, or similar base. The turntable has a support frame that can slide above and is suspended from the pylon, coupling devices... | 10/14/2003 |
| 6557713 | Rotary crane This invention concerns a rotary crane, especially an offshore crane of the king post type. The rotary crane has a pylon which can be anchored on a floor plate, platform, or similar equipment, a turntable housed to revolve around the longitudinal axis of ... | 05/06/2003 |
| 6530691 | Mounting of the bottom bearing ring of a rotating deck or a superstructure of a crane on a mast A mounting of the bottom bearing ring of a rotating deck or a truck of a crane on a mast comprises bearing slides, which are spaced apart and connected to the inside of the bearing ring and which support the bearing bodies, which are made of a high qualit... | 03/11/2003 |
| 6523708 | Mobile crane with a releasable coupling connecting the substructure to the superstructure A rotatably mounted ring having external teeth which mesh with a drive pinion of a fixedly mounted slewing gear, has distributed over the circumference, alternately portions of the same length with recesses and portions of the same length with radially di... | 02/25/2003 |
| 6491174 | Inverted pedestal crane An inverted pedestal crane has a base mountable to an underside of a horizontal support structure, such as for example a rig floor. A crane pedestal extends downwardly from the base, and a boom connects pivotally to the pedestal. The pedestal and the cran... | 12/10/2002 |
| 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 |
| 6367390 | Seismic isolation system for a crane A seismic isolation system is provided with a swing bearing ring consisting of an upper ring and a lower ring, which are rotatable relatively, between a crane body and a traveling means. A lower vertical shaft of a block pivotally supported on saddles of ... | 04/09/2002 |
| 6322104 | Excavator frame and method of assembly An excavator undercarriage frame is made to reduce the amount of machining necessary for supporting a swing bearing and ring gear on which an upper swing platform including the cab and operator's platform are mounted. The frame is made in two separate fra... | 11/27/2001 |
| 6082561 | Portable jib crane for panel trucks Disclosed is a novel jib crane for panel trucks, or vans wherein the crane pivots along a common axis between opposing fixed bearing mounts. In practice, one attaches a lifting apparatus ratus to a trolley of the jib. A payload is hoisted off the floor of... | 07/04/2000 |
| 6010018 | Swing lock mechanism A swing lock mechanism for machines having an upper works rotatably mounted on a lower works by a swing bearing is connected to the drive shaft of a swing bearing drive assembly and comprises a swing lock plate, an annular pin support, and a plurality of ... | 01/04/2000 |
| 6010019 | Dual beam header connector plate A gantry lift includes one or more pairs of vertically extendible lift columns and one or more horizontal lift beams supported across the upper ends of the lift columns. The lift beams are supported on header plates that permit slight pivoting or rocking ... | 01/04/2000 |
| 5993137 | Adjustable hoist for use with vehicle A hoist for raising and lowering objects may be attached to a vehicle. The hoist includes a support column and a boom attached thereto; the boom can be raised and lowered by a hydraulic double action cylinder or otherwise. Both the support column and cyli... | 11/30/1999 |
| 5901864 | Movable crane apparatus A movable pedestal or kingpost type luffing crane that includes an upperworks, having a crane boom, rotatably mounted on a crane support. The crane support extends below the upperworks. The movable crane is constructed to be selectively maintained in or r... | 05/11/1999 |
| 5848715 | Combination roll bar and crane A roll bar and crane device for use with vehicles such as a truck is adapted to be mounted to the truck bed. The device includes left and right leg members and a central beam extending therebetween and being selectively detachable thereto. A U-shaped boom... | 12/15/1998 |
| 5788095 | Offset boom and mast apparatus A boom and mast apparatus includes a transverse support member which has a proximal portion and a distal portion. A longitudinal mast assembly is connected to the distal portion of the transverse support member. The longitudinal mast assembly includes a s... | 08/04/1998 |
| 5749697 | Multi-purpose mobile hoist A boom hoist is disclosed having top and bottom mast sections joined together midway of an upstanding mast at a swivel joint defined by mating flange faces where the top mast section rotates about a central core extending into each mast section. A boom ar... | 05/12/1998 |
| 5678707 | Mechanism for rotating a crane turret through a 500° arc A crane apparatus includes an upstanding mainframe and a boom unit that is supported for rotation on the mainframe through a range of movement of about 500°. The crane is provided with a plurality of fluid transmission lines having first ends fixed relat... | 10/21/1997 |
| 5664692 | Mobile crane having a releasable coupling connecting the lower carriage with the upper carriage A mobile crane includes a releasable coupling for connecting the upper and lower carriages together in a simple and rapid manner through a holding ring connected with the lower carriage and an axial cylindrical ring extension of an externally toothed ring... | 09/09/1997 |
| 5645180 | Floor mounted rotatable jib crane A jib gantry is disclosed which has a connection between the upper end of a mast and a horizontally extending boom which allows tilting adjustment, which is secured in any adjusted position. The boom is hollow and slotted so as to be fixed at any point al... | 07/08/1997 |
| 5642577 | Dragline with high headroom between upper and lower structures Heavy machinery comprising a lower support structure having an upper surface, and an upper structure having a generally horizontal lower surface facing the upper surface of the lower structure, the upper structure being supported above the lower structure... | 07/01/1997 |
| 5615785 | In-vehicle device for moving and storing objects An in-vehicle device for lifting objects into and out of the storage areas of the vehicle in which it is installed. The device is attached to the inside wall, floor, or ceiling area of the vehicle in which it is installed. It is fixedly attached to the ve... | 04/01/1997 |
| 5522515 | Ring segment connection A ring for supporting a lift crane includes at least two ring segments each having two ends, the ends of the ring segments comprising at least one horizontal plate and at least one vertical plate. The horizontal plates and the vertical plates of adjacent ... | 06/04/1996 |
