Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7523835 | Hydraulic crane The invention relates to a method for determining a present value of the capacity level of a hydraulic crane (1) provided with a lifting cylinder (8), the present value of the capacity level being determined by means of a processing unit (33). T... | 04/28/2009 |
| 7308337 | Crane installation, in particular container crane A crane installation, especially a container crane, for moving a load, especially a container, includes a first stored-programmable control unit which, if required, receives signals resulting in a safety-related control command to one or several electric or electro-... | 12/11/2007 |
| 7206662 | Crane installation, in particular container crane A crane installation, especially a container crane, includes at least one hoist mechanism provided with at least one motor for lifting and lowering a load suspended from the hoist mechanism. The operation of the hoist mechanism is controlled by a control unit which ... | 04/17/2007 |
| 7137771 | Method and device for recognition of a load on a lifting gear In a method for recognition of the position of a load on a lifting gear, an active light source and a camera are mounted to a trolley of the lifting gear. Both, the light source and the camera are directed towards the load. The load has attached thereto at least one... | 11/21/2006 |
| 6976599 | Multi-rail dual hoisting crane Containers are respectively loaded onto and delivered from two trolleys of a single crane at pick-up and delivery locations by guided travel along a fixed travel path on a boom between the delivery location at one end of the boom and a central structure of the crane... | 12/20/2005 |
| 6634514 | Control monitoring device for tower cranes The invention relates to a control monitoring device for tower cranes, in particular for small cranes, with integration of functions, and adapted for radio control. The device comprises, in respect of all the movements of the crane, such as hoisting, rota... | 10/21/2003 |
| 6092678 | Overhead hoist transfer In an overhead hoist transfer having a moving carriage with a hand portion, which holds a load, elevatably suspended therefrom; and a means for teaching an appointed stop position on a placement base, on which said load is placed, to said moving carriage,... | 07/25/2000 |
| 6065619 | Cargo handling path setting method and apparatus for crane A cargo handling path setting method and apparatus determine arbitrary hoisting and lowering speeds of a suspended load and the times required for hoisting and lowering to set hoisting and lowering speed patterns, determine an arbitrary traversing speed o... | 05/23/2000 |
| 6039193 | Integrated and automated control of a crane's rider block tagline system A method is provided to automatically control a cranes's rider block lifte and taglines. Current position of the crane's rider block is determined in terms of its horizontal and vertical coordinates, as well as in terms of the inhaul angle of the liftlin... | 03/21/2000 |
| 5967347 | Lowering collision avoidance device of crane A lowering collision avoidance device includes a hoisting accessory swing detector, a rope winding speed detector, an arithmetic unit, a rope winding speed controller, and if desired, a rope length detector. The arithmetic unit computes a command value fo... | 10/19/1999 |
| 5152408 | Container crane installation In a container crane installation, swinging movements during the lowering of the spreader are suppressed in that the spreader, after the reaching of the ideal position of the hoist cable carrier in each case, is brought into swing-damping contact with the... | 10/06/1992 |
| 5048703 | Container crane installation In a container crane installation, swinging movements during the lowering of the spreader are suppressed in that the spreader, after the reaching of the ideal position of the hoist cable carrier in each case, is brought into swing-damping contact with the... | 09/17/1991 |
| 4753357 | Container crane A container crane which can transport a container on a ship to a position on a land along the shortest route. The container crane comprises container transporting means for transporting a container, first and second detecting means for detecting the horiz... | 06/28/1988 |
| 4750132 | Automatic signature pack transfer apparatus Apparatus for automatically picking up and positioning packs of individual signatures comprises a rigid framework which defines a bridge crane including a pair of parallel fixed support rails for guidance of a pair of movable rails on which is slidably su... | 06/07/1988 |
| 4614274 | Control system for automatic material handling crane An automatic material handling crane system services a plurality of stations in an industrial plant. The system includes a crane which is movable on a track, a mast which is carried by the crane, and a material handling mechanism which is carried by the m... | 09/30/1986 |
| 4456132 | Control system for automatic material handling crane An automatic material handling crane system services a plurality of stations in an industrial plant. The system includes a crane which is movable on a track, a mast which is carried by the crane, and a material handling mechanism which is carried by the m... | 06/26/1984 |
| 4363585 | Bale level control system for mechanical hopper feeder Apparatus for removing fiber portions from a selected plurality of bales and delivering the fiber to a receiver, such apparatus including a head that is lowered into contact with the top surface of such bales to grasp fibers therefrom. A control system is... | 12/14/1982 |
| 4284978 | Conveying system control A control scheme is used in a conveying system which is preferably a programmable conveying system of the station searching type including a wagon with a hoist that is capable of traveling between a number of different stations in the system. One or more ... | 08/18/1981 |
| 4261119 | Method for digging and transporting material In digging and hauling soil, rocks, minerals and the like by the use of a dragline the invention provides a novel combination of said dragline, a conveyor for hauling the materials dug, and a hopper disposed over and movable along the conveyor whereby mat... | 04/14/1981 |
| 4172685 | Method and apparatus for automatic operation of container crane A container crane system comprises a storage area on a crane for storing containers temporarily, a main spreader adapted for conveyance of the containers between the storage area and a ship so constructed that the containers are guided by a cell guide and... | 10/30/1979 |
| 4153165 | Scraper This disclosure relates to an automatically controlled scraper for moving particulate material onto a radial or star feeder for distribution thereby. The scraper includes a scraper bucket suspended from a radially extending arm. The bucket is connected to... | 05/08/1979 |
| 4146998 | Position responsive valve for controlling the retraction rate of a lower boom in an articulated boom assembly In an articulated boom having a platform and comprised of upper and lower booms respectively, there are hydraulic actuators controlling the movements of the upper and lower booms. Control means are necessary in association with the lower boom to control i... | 04/03/1979 |
| 4099631 | Scraper This disclosure relates to an automatically controlled scraper for moving particulate material onto a radial or star feeder for distribution thereby. The scraper includes a scraper bucket suspended from a radially extending arm. The bucket is connected to... | 07/11/1978 |
| 4053999 | Automatic grab crane A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied... | 10/18/1977 |
| 4047311 | Automatic grab bucket with pressure responsive solenoid control A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied... | 09/13/1977 |
| 4044902 | Aerial lifting equipment Aerial lifting equipment having a platform, a support structure and means rotatably mounting the support structure upon the platform for rotation about a substantially vertical axis. A boom structure is mounted on the support structure for movement about ... | 08/30/1977 |
| 4037742 | Programme controlled hydraulic loading crane In a hydraulically operated loading crane of the kind comprising a rotatable crane post, an inner crane boom pivotally mounted at the upper end of said post, a jib pivotally mounted to said boom, and an extension boom mounted for longitudinal displacement... | 07/26/1977 |
| 4032020 | Article exchanging apparatus An article exchanging apparatus for withdrawing a consumed article from a processing unit and replacing it with a fresh article is provided in which the fresh article is easily placed on the same level in the processing unit by incorporating weight actuat... | 06/28/1977 |
| 3983946 | Automatically repositionable rotary platform, and method A derrick-type augur drill machine mounted on a carrier, including a rotary platform having both a memory device and an automatic latching means associated with the memory device, the memory means being operable for storing information indicating a select... | 10/05/1976 |
| 3967736 | Boom control system A boom is disclosed comprising a pivotable structure including an upright support having wheels rotably supported on a rail and a truss supported above the rail by the upright support. A grapple is suspended from the truss and a winch mounted to the pivot... | 07/06/1976 |
| 3967394 | Automatic grab crane A time saving automatic hydraulic control for that sequence in operations in which a grab excursioning out of sight of the operator, is sequentially lowered open to engage work material, closed to pick up a load, and then hoisted with its load and emptied... | 07/06/1976 |
