Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7845503 | Pipe-laying machine A pipe-laying machine includes a self-propelled tracked vehicle, on one side of which is fitted a crane designed for lifting and laying pipes. The machine is also fitted with a counterweight constituted by a plate made of a heavy material that moves between a rest p... | 12/07/2010 |
| 7371039 | Slat replacement system A slat replacement system for removing damaged slats and inserting new slats in an animal pen. The slat replacement system includes a base assembly for resting on a floor of the animal pen. A frame member is rotatably coupled to the base assembly. A motor assembly i... | 05/13/2008 |
| 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 |
| 7239106 | System and method for facilitating fluid three-dimensional movement of an object via directional force A reeving system for filming movies, sporting events, or any other activity that requires fluid movement of a camera or other object to any position within a defined volume of space. To accomplish positioning embodiments move an object throughout three-dimensional s... | 07/03/2007 |
| 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 |
| RE38765 | Combination screen/conveyor device removably attachable to a vehicle In combination a screen, a shaker, a conveyor and carbody device which is attachable to a vehicle of choice, such as an hydraulic excavator, a backhoe, etc., and when installed thereon allows the vehicle to perform as a padding machine. ... | 08/02/2005 |
| 6845872 | System for lifting and moving an object A system for lifting and moving an object includes a vertical post (2), having a transversal lifting arm (38) rotatably connected thereto for rotation about a vertical axis thereof. The vertical post includes a weight (5) acting as a piston conn... | 01/25/2005 |
| 6568547 | Crane, especially a self-propelled crane A crane, especially a self-propelled crane, with a base structure and a revolving superstructure mounted thereon, a boom and a mast being hinged to the superstructure. The tip of the mast is connected on one side via adjustable-length guying to the head o... | 05/27/2003 |
| 6540095 | Pipe-laying vehicle The pipe-laying vehicle 1 includes a lower vehicle body 2, a driver's cab, and a jib 10 which is supported on the lower vehicle body 2, can be raised and lowered about a horizontal axis 11, and can be swivelled about a vertical pivot axis by a live ring. ... | 04/01/2003 |
| 6386322 | Method and apparatus for oil well pumping A walking beam pumping system is disclosed wherein the pumping system's prime mover is gravity. In one embodiment, the system comprises a walking beam pivotally coupled to a support structure at a pivot point substantially central along the length of the ... | 05/14/2002 |
| 6138837 | Combination screen/conveyor device removably attachable to a vehicle In combination a screen, a shaker, a conveyor and carbody device which is attachable to a vehicle of choice, such as an hydraulic excavator, a backhoe, etc., and when installed thereon allows the vehicle to perform as a padding machine.... | 10/31/2000 |
| 6098823 | Stabilizing arrangements in and for load-bearing apparatus An arrangement in or for a boom lift or other type of lift or load-bearing apparatus, in which a stabilizing moment is imparted based on at least one state of at least a portion of the boom or other portion of the lift or load-bearing apparatus. Also cont... | 08/08/2000 |
| 5697757 | Counter-balanced load carriers The disclosure relates to a counter-balanced load carrier comprising a multi-stage telescopic arm (10). One stage (24) adjacent one end of the arm is mounted for rotation about a horizontal axis (29) in a carrier (17,21) mounted for rotation by a vertical... | 12/16/1997 |
| 5653350 | Grapple carriage A remote-controlled grapple carriage picks up and transports logs along a skyline cable. The grapple carriage is designed to enable logs positioned laterally with respect to the skyline cable without any assistance from a logger at the logs. The grapple c... | 08/05/1997 |
| 5598935 | Frame structure for lift crane machinery A lift crane having enhanced lifting capability includes a self-installing counterweight system which utilizes actuators forming part of a counterweight assembly for raising the counterweight to an operative position with respect to the rear of the crane.... | 02/04/1997 |
| 5425464 | Palletizing apparatus A palletizing apparatus has a horizontally displaceable carriage movable on a horizontal member of a frame. A counter-weight is received in one or each of a pair of uprights and is connected via a cogged belt to the lifting slider which is provided with a... | 06/20/1995 |
| 5265741 | Boom extension for gantry cranes An apparatus and method for providing a boom extension for retractable booms of gantry cranes which does not require lowering the boom during attachment of the extension, or increasing the lift capacity of the boom hoist machinery, nor does the boom exten... | 11/30/1993 |
| 5203837 | Balanced lifting crane A crane has a generally horizontally disposed main boom arm centrally pivotally mounted on a turret supported for rotation atop a central column. The main boom arm supports a load at one end and a counterweight at its other end. The main boom arm load sup... | 04/20/1993 |
| 5151007 | Industrial use robot with horizontal multiple articulated arms with means to minimize or eliminate interference among driving portions Robots for industrial use having an arm mechanism of a horizontal multiple articulated type. The load movement mechanism and the arm expansion mechanism, which are provided within the robot arms in advance with respect to the change condition through the ... | 09/29/1992 |
| 5141195 | Counterweight removal device A counterweight handling device for construction equipment such as cranes in which a counterweight can be elevated to a predetermined height by using particulate hydraulic components then supported on a mounting frame. The counterweight may be supported b... | 08/25/1992 |
| 5058911 | Swivel tool tray A swivel tool tray is provided and consists of an arm adjustably retained within a sleeve that is vertically affixed to an upper outside corner of a wheeled cart. A horizontal extension member is swivably attached to the top of the arm so that it can swiv... | 10/22/1991 |
| 4969789 | Machine for handling modular building components An apparatus for handling and positioning building components of the type which are used in retaining walls or the like includes a vehicular support having an articulatable boom extending therefrom, and a gripper assembly at the end of the boom. The vehic... | 11/13/1990 |
| 4958815 | Table equipment Table equipment which comprises a frame, a table that can fix an object and move relative to the frame, a table guide for guiding the movable table on the frame, in a line inclined to the horizontal plane, a power source for driving the table along the ta... | 09/25/1990 |
| 4953722 | Crane and lift enhancing beam attachment with moveable counterweight A crane and an attachment comprising a counterweight support beam including a plurality of connected segments movable relative to each other, and having a fore end adapted to be connected to the crane upper works, and an aft end rearward from the rear por... | 09/04/1990 |
| 4907768 | Telescoping crane A crane having a plurality of telescoping beams for supporting and positioning a camera or the like. The crane includes a counterweight structure which balances the crane about its fulcrum point. As the beams of the crane telescope outward, the movement o... | 03/13/1990 |
| 4729486 | Lift enhancing beam attachment with movable counterweights An attachment for increasing the lifting capacity of a crane having a mobile lower works with an upper works including a rear portion rotatably mounted thereon and having a pivotally mounted boom and an upwardly and rearwardly projecting mast carried on t... | 03/08/1988 |
| 4679336 | Earth moving machine A machine comprises a body (10) having a ground engaging propulsion means (11) and a base frame (14) mounted on the ground engaging means (11), the base frame (14) being movable relative to the ground engaging propulsion means (11) about a first generally... | 07/14/1987 |
| 4567990 | Self-balancing crane A pivoted arm counterbalance system for a self balancing crane provides a counterbalancing moment exactly equal to the overturning moment of the crane by the utilization of a dynamic balancing system in which a drive cable having a tension related to the ... | 02/04/1986 |
| 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 |
| 4524874 | Tower crane with overbooming protection A tower crane with a counterweighted luffing boom has its counterweight lines and pulleys so arranged that, in normal operating positions of the boom, the counterweights and lines tend to swing the boom upwardly, but when the boom angle is steep, beyond a... | 06/25/1985 |
| 4494906 | Earthmoving machine An earthmoving machine primarily for land drainage and irrigation purposes has a pivotally mounted boom (8) carrying an arm (12) pivoted at one end to one end of the boom and having a bucket (14) or the like attached at its other end. At the end of the ar... | 01/22/1985 |
| 4402413 | Counterweight arrangement A counterweight arrangement for mobile vehicles including a pair of transversely spaced support members having notches formed therein. The counterweight has a pair of transversely spaced rod members secured thereto which are selectively received in the no... | 09/06/1983 |
| 4280627 | Heavy-duty crane with counterweight In a heavy-duty crane particularly suitable for lifting heavy loads over tall buildings, a substructure supports a rotatable main boom. A jib for carrying the load and a secondary spar for carrying a counterweight by means of a cable are hinged to the tip... | 07/28/1981 |
| 4258852 | Auxiliary counterweight arrangement for mobile crane An auxiliary counterweight arrangement resists lateral as well as forward tipping of a mobile crane that has a platform rotatable about a vertical axis and a boom mounted on the platform to swing in a vertical plane containing said axis. The boom normally... | 03/31/1981 |
| 4215972 | Transfer mechanism employing swingable arm formed as a parallelogram linkage A transfer apparatus comprising an object-suspending rod, upper and lower support rods whose one ends are pivotally connected to the object-suspending rod, and a connecting rod pivotally connecting the other ends of the support rods. The object-suspending... | 08/05/1980 |
| 4204603 | High-capacity crane with counter-weight device A high capacity crane comprises a structure which is rotatable about a vertical axis on a corner frame supported on the ground and which supports a jib for raising a load and a counter-jib from which is suspended a counter-weight, the counter-weight being... | 05/27/1980 |
| 4204664 | Winch mechanism for crane A winch mechanism includes a first and a second drum each having multiple grooves therein. A frame supports the first drum spaced from the second drum with the axis of rotation of the first drum canted relative to the rotational axis of the second drum su... | 05/27/1980 |
| 4172529 | Crane The specification discloses a crane including a base having a boom pivotally supported at one end from the base. The opposite end of the boom is adapted for receiving the load to be carried by the crane. A mast and upper tension member system are affixed ... | 10/30/1979 |
| 3998336 | Crane with compensating counterweight The weight of a pivotally mounted boom in a crane is compensated for in part by a counterweight which is suspended from one end of a compensating cable trained over a deflecting pulley at the top of the supporting crane structure. The other end of the cab... | 12/21/1976 |
| 3955684 | Rotary crane structure with a selective drive on power unit A rotary crane assembly of the type which is stationarily supported on the ground and which assembly includes a large mounting ring on which a revolvable frame is supported for revolving about a generally vertical axis. The revolvable frame has an upwardl... | 05/11/1976 |
