Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7356948 | Cutting wheel for a trench wall cutter The invention relates to a cutting wheel for trench wall cutter, having a cutting wheel hub and at least one cutting tooth holder, which is located in substantially radially projecting manner on the cutting wheel hub. The cutting wheel according to the invention is ... | 04/15/2008 |
| 7165346 | Method and device for air-assisted moving of soil in an earth moving apparatus Devices and methods for air-assisted loading of soil in an earth-moving apparatus are disclosed. One aspect of a device includes a source of a current of air and at least one conduit for directing the current of air towards soil moved by the earth-moving apparatus. ... | 01/23/2007 |
| 7114271 | Cutting tool for digging trenches, and enabling the cutter head to be changed quickly The invention relates to a cutting tool for digging vertical trenches, the tool comprising: a jib (B); a cutter structure (34; C) suspended from the jib via a cable; a plurality of cutter me... | 10/03/2006 |
| 7083734 | Method and apparatus for cleaning a water area A method for cleaning a water area including dredging, via a dredging apparatus, waste from the water area through a suction pipe into a sedimentation basin, generating a flow of the dredged waste from the water area to the sedimentation basin via siphonage and vari... | 08/01/2006 |
| 7047676 | Rotational and positionable arm-controlled underwater bottom artifact and sample suction recovery apparatus and interchangeable bottom coring apparatus A novel rotational and positionable robotic arm-controlled underwater bottom artifact and sample suction recovery apparatus and interchangeable bottom coring apparatus, wherein the interchange is effected underwater by rotation of a common deploying arm and remote-c... | 05/23/2006 |
| 6318005 | Dredge with improved auger shroud A dredge supporting a pivotal ladder with a suction auger on its free end. A shroud assembly including front, center and rear sections surrounds a large portion of the periphery of the auger. The shroud assembly is pivotal about the axis of the auger and ... | 11/20/2001 |
| 6209965 | Marine clathrate mining and sediment separation A method and apparatus for mining of hydrocarbons from a hydrocarbon-containing clathrate such as is found on the ocean floor. The hydrocarbon containing clathrate is disaggregated from sediment by first disrupting clathrate-containing strata using contin... | 04/03/2001 |
| 5651200 | Debris exclusion devices for an augerhead type hydraulic dredge system The present invention pertains to debris exclusion devices designed for use on a small augerhead type hydraulic dredge system for operations in debris laden channels that can cause the system's pump to malfunction. Debris to be excluded by these devices i... | 07/29/1997 |
| 5267830 | Pump for abrasive materials A pump for handling abrasive materials includes a housing having two chambers. A shaft mounts a high pressure impeller and a high volume impeller in respective chambers of the housing, each chamber having a separate and opposite inlet. A channel is provid... | 12/07/1993 |
| 5212892 | Cutter head assembly for excavating machine A cutter head assembly attachable to a boom of an excavating machine. The cutter head assembly includes a frame and a cylindrical cutter drum under the frame and attached to the frame through a pair of motors and a pair of torque converters. A mounting br... | 05/25/1993 |
| 5203099 | Self-powered, submersible dredge apparatus A self-powered, self-contained mobile dredge for removing silt and other bottom sediment from the bottom surface of a body of water, such as a canal, which accumulates as a result of erosion caused by rain and irrigation. A submersible drive unit of the d... | 04/20/1993 |
| 5170576 | Cutting wheel arrangement for suction dredge A cutting wheel arrangement for a suction dredge includes a cutting wheel assembly provided with a plurality of cutting stirrups. A suction pipe is connected to a suction chamber arranged within the cutting wheel arrangement. The suction chamber has a suc... | 12/15/1992 |
| 5148615 | Dredging apparatus An improvement in a dredging apparatus for cooperating in removing a mixture of liquids and solids from a selected site. The dredging apparatus includes a frame with means for moving the frame and an arm assembly having one end movably connected to the fr... | 09/22/1992 |
| 4999934 | Dredging apparatus A floating dredge and hydraulic dredging apparatus for mining underwater mineral bearing deposits is disclosed. The dredge includes an overburden excavator and an ore excavator mounted to a pontoon for removing overburden and ore material, respectively. P... | 03/19/1991 |
| 4952179 | Salt mushroom cutting apparatus Salt mushroom cutting apparatus for removing salt mushrooms from a water body, comprises a vessel floatable on the water body, and a helical cutter carried by the vessel forwardly of its bow and extending transversely thereof for pulverizing the salt bodi... | 08/28/1990 |
| 4942682 | Dredging module for use with conventional back hoe apparatus A self-contained dredging module includes a unitary body adapted to be attached to the stick of conventional back hoe apparatus to convert it with minimum modification from dry land to sub-aqueous excavation. The body carries a dual cutter wheel, suction ... | 07/24/1990 |
| 4903419 | Method of and apparatus for dredging sludge in high density A method of and apparatus for continuously dredging sludge deposited on an underwater bed, at a high density of the sludge, according to which digging and scooping devices are placed in an airtight hood opened at its bottom, which is applied on the intend... | 02/27/1990 |
| 4896445 | Method for reducing costs and environmental impact of dredging Method and apparatus for reducing the cost and environmental impact of excavating and disposing of dredging spoils resulting from the construction and/or maintenance of waterways wherein the reaction of aerially jetting a slurry is used to at least assist... | 01/30/1990 |
| 4819346 | Dredge cutting head with shock absorber An improved cutter head for a floating dredge of the type having a lowerable boom with cutter head on the lowerable end thereof. The cutter head includes a rotatable open axis cage of cutter bars mounted adjacent to and along a rectangular suction inlet s... | 04/11/1989 |
| 4808305 | Apparatus for sludge pond treatment Disclosed is a mixing valve for use in sludge treatment and solidification of sludge ponds. The valve has a main body into which the sludge suspension is pumped. Located within the main body of the valve is a flexible hose through which the sludge treatin... | 02/28/1989 |
| 4780972 | Wheelmotor drive for rotary cutterhead A wheelmotor direct-drives the bucketwheel for wet underwater service in dredging. This eliminates the combination of an intervening gear box and a watertight chamber to house the rotating shaft hydraulic motor of conventional dry underwater service pract... | 11/01/1988 |
| 4765071 | Dredge cutter head with shock absorber An improved cutter head for a floating dredge of the type having a lowerable boom with cutter head on the lowerable end thereof. The cutter head includes a rotatable open axis cage of cutter bars mounted adjacent to and along a rectangular suction inlet s... | 08/23/1988 |
| 4702023 | Cutter wheel for a dredge A cutter wheel for a cutter wheel type dredge has a pair of axially spaced wheel parts each carrying peripherally mounted scoops and a centrally mounted hopper. The scoops have open sides, bottoms and rear ends and the hopper has open sides with which the... | 10/27/1987 |
| 4646449 | Bucket wheel dredging device A bucket wheel cutting device with two cutting wheels for a floating dredge with suction tube conveyance, has its suction tube arranged to end in two suction chambers separated by a central partition, one of the cutting wheels being provided at each of th... | 03/03/1987 |
| 4628623 | Turbidity control system for dredge cutterheads A turbidity control system for dredging operations wherein turbidity adjacent the dredge head is controlled by one or more operating characteristics of the dredging operation. The dredge head includes water jets for agitating, slurrying, loosening the mat... | 12/16/1986 |
| 4575960 | Dredge cutterhead Dredge head and method of using the same in which the solids of the interface between the consolidated soil and the water source are released as a slurry into the atmosphere adjacent the swath cut by the dredge head to deposit the solids remote from the s... | 03/18/1986 |
| 4517754 | Cutterhead attachment for a dredge An attachment for underwater dredging cutterheads mounted above and preceding the cutterhead for digging, breaking up and transferring upland material toward the cutterhead for removal thereby. The attachment includes a shaft above and preceding the dredg... | 05/21/1985 |
| 4445290 | Appliance for dredging the bottom of a body of water A working head which is in contact with the bottom of the body of water is mounted at one end of an arm hingedly connected at its other end to a carriage. The carriage is vertically displaceable on the anchoring device, at least in the lower portion of th... | 05/01/1984 |
| 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 |
| 4397106 | Dredge bucket wheel structure An improved bucket wheel for a dredge having a flush jet arrangement for clearing the buckets of sticky material, an improved divider arrangement for preventing entrance of oversized objects into the buckets and means for expelling air trapped in buckets ... | 08/09/1983 |
| 4395833 | Sealing and lubricating system for a dredge The dredge is of the type having a bucket wheel, driven by a hydraulic motor through a gearbox, on the front of a bucket wheel carrier hinged at its rear to the dredge hull, and lowered to or raised from working depth by a cable engaged with a lifting she... | 08/02/1983 |
| 4373276 | Device for conveying a slurry, such as sand or gravel or the like, lying under water A dredger device for conveying sand or gravel or the like lying under water in which the material enters a conveyor head and is conveyed through a variable length tube into a receptacle on the dredger. In the interior of the variable length tube there is ... | 02/15/1983 |
| 4344239 | Dragging type head for a suction dredger The invention relates to a dragging type head (1) of a suction dredger, the head having a driven cutting device in front of the suction tube mouth, which cutting device (5) rotates about a horizontal transverse axis and has cutting blades at its outer cir... | 08/17/1982 |
| 4302893 | Digging wheel for a suction dredger vessel A digging wheel for a suction dredger vessel which digging wheel rotates about a horizontal axis and has at its circumference a plurality of closely spaced partly overlapping scoops while the suction mouth in the interior of the wheel has an extension whi... | 12/01/1981 |
| 4301606 | Apparatus for excavating a trench underneath a pipeline installed on the sea bottom An apparatus for excavating a trench underneath a pipeline installed at the sea bottom, which apparatus is provided with rotating excavators, means for guiding the excavator relative to the pipeline, as well as means for advancing the excavator along the ... | 11/24/1981 |
| 4267652 | Dredging system and apparatus A dredging assembly pivotally suspended by a boom from a floating vessel includes an underwater frame that is propelled by rotation of spaded wheels to exert a forward propelling force on excavating drums mounted at a forward end of the frame. The drums a... | 05/19/1981 |
| 4259795 | Dragging type cutter head for a suction dredger A dragging type cutter head for a suction dredger has a cutting member that rotates about a horizontal axis and has at its periphery a series of cutting teeth disposed side-by-side in the axial direction. At the lowermost point in their rotation, the cutt... | 04/07/1981 |
| 4255882 | Dragging type cutter head for a suction dredger A dragging type suction head for a suction dredger having a suction tube which extends downwardly and rearwardly from a vessel at the lower end of which the suction head is mounted. In this suction head, enclosed by a housing which at least at a rear side... | 03/17/1981 |
| 4242814 | Cutter wheel for a dredging apparatus A cutter wheel for a dredging apparatus mounted for rotation about a shaft and having outwardly projecting cutting blades mounted on openings formed in the cylindrical peripheral plane of said wheel, while a stationary suction mouth is provided inside sai... | 01/06/1981 |
| 4150502 | Method and apparatus for breaking up lumps of stone from a subaqueous soil When breaking up lumps of stone from a subaqueous stony ground, the lumps are loosened by means of at least one chisel inserted into the ground and being moved along the ground surface. In order to break up lumps of stone by low power and to main a predet... | 04/24/1979 |
