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 |
| 7326020 | Multi-purpose vessel and method for recovering, storing and/or offloading material in a dredging operation A method of building a levee or an island is disclosed. The method includes dredging material from a surface of a body of water with a dredge assembly mounted to a hull and supporting a hopper with the hull. The hopper is adapted to receive the material. The hopper ... | 02/05/2008 |
| 7308821 | Arrangement for determining the penetration depth on putting in place supporting elements into a water bed With an arrangement for determining the penetration depth (10) when putting in place supporting elements (2) into a water bed (5), according to the invention, there is provided a pressure sensor (7) for measuring the water pressure which ... | 12/18/2007 |
| 7207127 | Hook-on grab bucket, in particular motor-driven underwater grab bucket A grab bucket, in particular motor-driven underwater grab bucket, has first and second half-scoops. The scoops can be moved relative to on another from an open position into a closed position by a hydraulic cylinder. The opening angle of the half-scoops is monitored... | 04/24/2007 |
| 7089693 | Dredging method and apparatus An improved hydraulic dredging apparatus for removing a sediment layer from an underlying substrate lying below a water surface includes a receptacle having an open-front portion through which is sediment is collected, means for attaching the dredging apparatus to t... | 08/15/2006 |
| 7000903 | Wireline subsea metering head and method of use A system and method to measure positioning with respect to deploying a subsea load, the system comprising a subsea metering head having a position sensor; a controllable winch operatively connected to the winch flexible cable; and a controller operatively in communi... | 02/21/2006 |
| 6953006 | System and method for clam farming A system and method for clam farming includes a supply ship coupled to a clam planter via a supply tube bundle having a plurality of individual tubes. The supply ship has a separation station configured for introducing individual clams into the individual supply tub... | 10/11/2005 |
| 6918801 | Amphibious vehicle A vehicle adapted to operate on dry land, in soft terrain, and while floating. The vehicle includes a chassis formed by two interconnected pontoon sections sized such that the chassis and equipment will float. The pontoons are fitted with a track system providing pr... | 07/19/2005 |
| 6364119 | Screening device and apparatus including same A screening device including a screen having a first side for presentation to material to be screened and a second side, a plurality of screen openings in the screen extending between the first and second side thereof, a plurality of tines mounted on a su... | 04/02/2002 |
| 6134815 | Monitoring device for motor-driven underwater grab bucket dredge gear A monitoring device for motor-driven underwater grab bucket dredges contains a bucket gear suspended on a cable. The device ensures reliable monitoring and controlling of the operating condition of the bucket gear 4. There is at least one sensor connected... | 10/24/2000 |
| 6126016 | Screening device and apparatus including same A screening device including a screen includes a first side for presentation to a body of material to be screened and a second side. A plurality of elongate screen openings are formed in the screen extending between the first and second sides thereof. A p... | 10/03/2000 |
| 5172497 | Slurry density control system A suction dredge for mining solids from a water bottom, includes a floating barge, an elongated tubular suction line extending between the barge and the water bottom, a boom for raising and lowering the elongated tubular suction line, a valve in the elong... | 12/22/1992 |
| 4995175 | Pneumatic extraction head A pneumatic extraction head for underwater debris, in particular sand and gravel, has a joint or connecting pipe extending inside the housing between the base plate and the flange plate and surrounding the debris inlet opening, this connecting pipe formin... | 02/26/1991 |
| 4926571 | Connection for connecting compressed-air lines A connection for connecting compressed-air lines arranged on the body of a floating dredge leading to measuring devices, control devices or the like, with measuring air lines mounted on a suction pipe of the floating dredge used for suction pipe position ... | 05/22/1990 |
| 4911831 | Slow sand filters The invention relates to an apparatus for cleaning a slow sand filter for a body of liquid while the liquid is in situ, in which there is a carrier adapted to traverse the body of liquid, and a device carried by the carrier and adapted to skim successive ... | 03/27/1990 |
| 4804095 | Cutoff device for crane systems The cutoff device is provided for crane systems, especially a dredger to which a grab 1 is attached. Grab 1 has a cable 5 connected to it, which is guided over pulleys 4, 7 and kept under tension with the help of a weight 9. One of the two pulleys 4 is pr... | 02/14/1989 |
| 4713896 | Inshore submersible amphibious machines A submersible unit comprises a portable, open or closed bottomed pneumatic chamber mounted on flexible drive tracks controlled by personnel from the chamber for operation along the bottom of a body of water, on the surface, at intermediate levels, in the ... | 12/22/1987 |
| 4622766 | Hand held suction nozzle with metal detector A device connecting a suction dredge to a metal detector search coil, providing a movable suction tube held perpendicular to the search coil, and centered approximately over the coil's area of maximum sensitivity, further allowing said suction tube to be ... | 11/18/1986 |
| 4600338 | Mud removal process and apparatus A process and a stationary dredging apparatus for periodically removing marine or river sediment of relatively high density from the bottom of an arm of the sea, a channel or a harbor basin by means of a stationary dredging means consisting of a substanti... | 07/15/1986 |
| 4584784 | Method and device for maintaining tools at a level A tool is controlled below a water surface by carrying out a level comparison between a level-fixed measuring element postioned on land and a level-varying measuring element belonging to the tool and by adjusting the level of the tool with respect to a fl... | 04/29/1986 |
| 4444229 | Slurry concentration apparatus An apparatus for increasing the solids to fluids ratio of a slurry is constructed from a chamber which has a substantially circular cross section with a high pressure slurry inlet mounted through said chamber wall with the axis of the inlet normal to a di... | 04/24/1984 |
| 4399623 | Dredges A dredge hull carries a first spud vertically slidable through a spud frame on a longitudinally slidable carriage, and a second spud vertically slidable through a spud frame on a fixed carrier. Each spud has lifting means for raising it vertically, lockin... | 08/23/1983 |
| 4398362 | Oceanic seaplow system An oceanic seaplow system comprising a plurality of vessels forming a mini fleet wherein a flexible hose is joined at one end to a suction turbine associated with a mothership and the other end is connected to a suction stud on a seaplow travelling on the... | 08/16/1983 |
| 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 |
| 4359686 | Metal detection apparatus with basket A metal detection apparatus that detects metal objects includes a nonmetallic basket in which the metal objects are retrieved. The nonmetallic basket has a top portion, a side wall portion, an open bottom and a blade portion for scooping material into the... | 11/16/1982 |
| 4353174 | Electronic control system for pneumatic-hydraulic pump dredge A control system is disclosed for a dredging device which includes a submersible pump having one or more chambers. Each chamber defines an air port through which air can be delivered to and exhausted from the chamber, a material discharge port for dischar... | 10/12/1982 |
| 4351122 | System for controlling the position of the drag pipe of a dredge Dredge with drag pipe, consisting of a number of pipe sections interconnected by hinged joints, whereby drag lines are connected to said hinged joints and to the front and rear end of the drag pipe and furthermore the rotatably supported front end of the ... | 09/28/1982 |
| 4343102 | Method for controlling the operation of a dredging apparatus A method for controlling the operation of a dredging apparatus provided with a cutting tool according to changes in at least one parameter such as soil resistance, comprises performing a working stroke with the cutting tool, measuring that parameter durin... | 08/10/1982 |
| 4319782 | Means for controlling feed of particulate material into airlift pipe To limit the amount of solid particulate matter fed into an airlift pipeline from, especially, a suction nozzle device, the density of the suspension passing from the suction nozzle to the airlift system is measured. If the measured density is above a pre... | 03/16/1982 |
| 4280288 | Modular draging unit for collecting solid bodies on an underwater bed A modular draging unit for collecting solid bodies such as polymetallic nodules on an underwater bed such as a sea floor comprises a plurality of collecting structures and a storage structure which are intended to be applied against the sea floor, means f... | 07/28/1981 |
| 4280289 | Underwater trenching machine for burying pipeline and the like An underwater trenching machine comprising a carriage and a pair each of fore and aft pivotal frames, each of which carries a drive roller means for intimately contacting the pipeline, said front and rear frames being adapted to mutually exclusively pivot... | 07/28/1981 |
| 4242815 | Suction pipe position control Method and apparatus for controlling the position of the last section of a suction pipe with a drag head, wherein the suction pipe comprises at least two pivotally connected sections and wherein there are provided at least two independently operable hoist... | 01/06/1981 |
| 4232903 | Ocean mining system and process An ocean mining system for mining manganese nodules comprises a surface subsystem and an ocean bottom subsystem. The ocean bottom subsystem includes a mobile, maneuverable, self-propelled, miner vehicle which picks up, handles, washes and crushes nodules while... | 11/11/1980 |
| 4227323 | Hydraulic dredge suction diversion flap A flap is provided for the suction head of a hydraulic dredge to divert the dredge suction force generally in the direction that the head is swung along the bottom of a body of water and to guide material into the mouth of the suction head. The suction he... | 10/14/1980 |
| 4217709 | Submarine sand sampler A subsurface sampler which obtains samples of sand from offshore deposits. A 27 foot tube within a tube is lowered to the ocean floor while suspended from flotation tanks. The sampler is free of suspension cables and thus is detached from boat motions. Su... | 08/19/1980 |
| 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 |
| 4175342 | Suction dredger A suction dredger, comprising a vessel and a suspension conveying conduit provided with a pump and having a nozzle suspended by means of at least one cable of a lifting device on the vessel, is improved for preventing breaking of the cable or damage of ot... | 11/27/1979 |
| 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 |
| 4108499 | Method and control system for controlling a suspended implement A method and a control system for controlling the height level position and horizontal movement of a suction device which is vertically movably suspended from a horizontally movable supporting device according to variations of the inclination, or angular ... | 08/22/1978 |
| 4050171 | Depth control for endless chain type trencher The cutting depth of an endless chain type trencher is normally determined by the angle of the frame carrying the endless chain relative to the horizontal. In accordance with this invention, the angular position of the digging frame, hence the depth of th... | 09/27/1977 |
