Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7204378 | Goods transshipment apparatus A goods transshipment apparatus having a mobile substructure with a superstructure mounted so as to be rotatable relative to said substructure and having a driver's cab and engine compartment and a jib or jib system jointed to the superstructure wherein the superstr... | 04/17/2007 |
| 7093382 | Power diversion system for a hydraulic dredge A power diversion system for a hydraulic dredge diverts any or all available prime mover power to slurry production. An electronic control module (ECM) on the dredge continuously communicates with the prime mover ECM to determine the current available power of the d... | 08/22/2006 |
| 6053663 | Device for creating a local water flow A device for creating a localized water jet within a body of water allows for the displacement of material from the floor of the body of water. The device includes two powered screws within a jet pipe. The screws are arranged coaxially and their direction... | 04/25/2000 |
| 5887667 | Method and means for drilling an earthen hole An earthen hole drilling device has an elongated tube having first and second ends. A source of vacuum pressure is connected to the first end of the tube. A rotary fluid nozzle is attached to the second end of the tube and is adapted to direct a rotary je... | 03/30/1999 |
| 4945661 | Dredging apparatus Mud is taken into a vertical screw conveyor while an inlet device is rotating or without the use of such an inlet device. The mud is sent from the discharge port of the conveyor into a transport pipe. The mud is forcibly sent by a compressed air. Screens ... | 08/07/1990 |
| 4914841 | Dredging with a pressurized, rotating liquid stream An apparatus for dredging using a pump which forms a highly pressurized, rotating stream of liquid which is directed down the inlet conduit to a discharge and the momentum and energy of the rotating stream is transferred to the solids and liquids, suspend... | 04/10/1990 |
| 4680879 | Underwater dredging apparatus and cutter head therefor A boom pivotally mounted for rotation about a vertical axis on a support vehicle which may be a floating barge or heavy truck. The boom is extensible and retractable in the radial direction and mounts, at a distal end, a cable supporting a dredging appara... | 07/21/1987 |
| 4615645 | Pipeline trenching A hollow curved auger is provided for simultaneously laying and trenching a pipeline, as from the surface of an ice-covered body of water. The pipeline passes through the auger which comprises rotary teeth encircling the pipeline and turning in opposed di... | 10/07/1986 |
| 4593484 | Method of dredging with a pivotally mounted cutter head A method and apparatus for efficiently and economically hydraulically dredging to a level bottom. The method includes the use of a cutter head which is pivotally mounted to the end of a dredging ladder. The cutter head is swung through its cutting arcs wi... | 06/10/1986 |
| 4470209 | Dredge swinging apparatus A dredging apparatus including a spud barge and a dredging barge. A hollow pivot sleeve is located at the stern of the dredging barge. A hydraulically extendable arm is mounted on the spud barge and is pivotally connected to the pivot sleeve. A large diam... | 09/11/1984 |
| 4374420 | Method of accurately dredging a desired profile contour The method of dredging accurately to a desired profile contour with a cutting dredger involves the operation of a cutting assembly, the cutting tools of which describe a predetermined cutting envelope, and swinging the cutting assembly while the dredger i... | 02/15/1983 |
| 4327507 | Rotary cutter head with jet flushing blades A cutter having a plurality of cutting blades for a suction-dredger which in operation is driven into rotation so that said cutting blades are capable to cut loose the soil which, mixed with water is subsequently sucked up by means of suction tube, one or... | 05/04/1982 |
| 4312762 | Method and apparatus for removing sediment or other flowable solid material from a bed underlying a body of water This invention relates to a method and apparatus for removing settled sediment from a water-covered bed such as a silt pond. It also relates to a method and apparatus for the transfer of the removed sediment to a disposal site.... | 01/26/1982 |
| 4305214 | In-line centrifugal pump A ladder pump for use with a hydraulic dredge to increase the main pump efficiency comprises a casing and a vaned impeller located in the casing and mounted for rotation about a normally horizontal axis transverse to the ladder. The casing has an inlet an... | 12/15/1981 |
| 4242816 | Dredger having a two-part boom The invention described consists of a dredger having a floating hull and a two-part boom attached to the hull and extending forwardly therefrom. The rear end of the first part of the boom is hinged to the hull about a horizontal axis, while its front end ... | 01/06/1981 |
| 4204347 | Device for cutting loose hard ground material Hard ground beneath a water surface is controllably cut away by a device ch includes a buoyant body having a work support depending therefrom and forced against the hard ground so as partially to support the weight of the body. A cutter assembly is relea... | 05/27/1980 |
| 4177585 | Method and apparatus for dredging In order to accurately control the cutter head of a cutter head suction dredger anchored by means of ropes, the tension in at least one of the two longitudinal ropes is measured and the winch of at least one of the two longitudinal ropes is actuated in de... | 12/11/1979 |
| 4149251 | Dredge profile computer for a cutter suction dredge A dredge profile computer for a cutter suction dredge converting the measured swing angle into the width of the cut in feet and the measured cutter-ladder angle to the depth of the cut in feet, being provided with an indicating unit to show the position o... | 04/10/1979 |
| 4133033 | Dredge profile computer for a cutter suction dredge A dredge profile computer for a cutter suction dredge converting the measured swing angle into the width of the cut in feet and the measured cutter-ladder angle to the depth of the cut in feet, being provided with an indicating unit to show the position o... | 01/02/1979 |
| 4026049 | Articulating dredge An articulating dredge comprising a barge with a spud arrangement to maneuver the barge and an articulated hull section pivotally secured to the bow of the barge by a trunnion such that the hull section pivots between the port and starboard sides of the b... | 05/31/1977 |
| 3978679 | Method and apparatus for underwater trench excavation and pipeline laying In the excavation of a trench on the seabed for receiving a pipeline, the pipeline is first laid on the seabed and subsequently the trench is excavated by an excavation machine which moves along side the pipeline and digs out material from beneath the pip... | 09/07/1976 |
