Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7523570 | Vacuum truck solids handling apparatus A vacuum truck solids handling apparatus includes a truck having an internal combustion engine and a truck frame. A vacuum source, a solids collection container and a separator assembly are all mounted on the truck frame. The separator assembly is adapted to separat... | 04/28/2009 |
| 7448151 | Tool for excavating an object A tool for excavating an object comprises a jetting system having a nozzle arranged to receive a fluid and abrasive particles via an abrasive particle inlet, and arranged to impinge the object to be excavated with a jetted stream of the fluid mixed with the abrasive... | 11/11/2008 |
| 7370445 | Sludge removal A sludge removal apparatus includes a sludge removal head (10) with a sludge suction duct and an water supply duct with open end portions alongside each other, and a filter (32) adjacent to the open ends of the suction duct (36) and the water su... | 05/13/2008 |
| 7264713 | Apparatus, system and method for remediation of contamination An apparatus, system and method for removing and treating contaminated materials on a bottom of a body of water and introducing growth packets to revitalize the treated bottom of the body of water. The structure may comprise a vessel with an open face. The vessel ma... | 09/04/2007 |
| 7258242 | Mobile crane boom having an autarchic hydraulic power unit mounted thereon The present invention relates to a mobile crane boom having a self-sufficient energy supply arranged on it for supplying hydraulic energy to at least one hydraulic load arranged on the mobile crane boom. The supply of the hydraulic load arranged on the mobile crane ... | 08/21/2007 |
| 7005064 | Method and apparatus for remediating wastewater holding areas and the like A method and apparatus for remediating wastewater holding areas and the like includes a closed, foraminous dewatering membrane that is positioned adjacent to the wastewater holding area. Sludge and adjacent water on the bottom of the wastewater holding area are pump... | 02/28/2006 |
| 6979152 | Intake nozzle for vacuum conveyor An intake conduit apparatus comprises an intake conduit adapted at a downstream output end thereof for connection to an intake of a vacuum conveyor, and adapted at an upstream input end thereof to facilitate entry of granular material. Ramps slope inward and downstr... | 12/27/2005 |
| 6860042 | Excavation system employing a jet pump An excavation system comprises a bucket, defining an outlet at its base, in fluid communication with a suction tube in fluid communication with a jet pump, configured to create a suction in the suction tube. A related method of excavating comprises loading excavatio... | 03/01/2005 |
| 6835314 | Method and apparatus for remediating wastewater holding areas and the like A method and apparatus for remediating wastewater holding areas and the like includes a closed, foraminous dewatering membrane that is positioned adjacent to the wastewater holding area. Sludge and adjacent water on the bottom of the wastewater holding area are pump... | 12/28/2004 |
| 6637135 | Contaminated sediment removal vessel A method is described for removing sediments during dredging operations to minimize the release of contaminants at marine locations containing sediments that are deemed contaminated and require removal. The preferred method comprises the use of a speciall... | 10/28/2003 |
| 6432303 | Contaminated sediment excavator for subsurface sediment removal A system and method removes contaminated sediments during dredging operations to minimize the dispersion of particulate matter that normally occurs during conventional mechanical or hydraulic dredging operations. The system uses a specially designed press... | 08/13/2002 |
| 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 |
| 6138833 | Placer gold mining method, placer gold mining boat used in this method, placer gold digging and separating method and system therefor, and placer gold separating method and system therefor A placer gold separating method includes subjecting placer gold-and gold ore-containing sand and gravel layers accumulated on the bottom of the water of a river and placer gold- and gold ore-containing sand and gravel layers formed deep in the ground to e... | 10/31/2000 |
| 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 |
| 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 |
| 5428908 | Apparatus and method for subsidence deepening A method of hydraulic dredging employing apparatus and a procedure for subsidence dredging for subsurface removal of sandy strata which results in subsidence, or drop in elevation of the bottom deposits of a body of water, wherein sand is mined laterally ... | 07/04/1995 |
| 5129167 | Method of and apparatus for preventing diffusion of muddy water in sand gathering equipment A sand gathering system has a submerged sand pump capable of sucking slurry such as sand and gravel from the bottom of sea, lake, pond or the like, a sedimentation tank disposed at the discharge opening of the suction pump, and a discharge tank for discha... | 07/14/1992 |
| 5083386 | Apparatus and method for forming a crater in material beneath a body of water Dredging apparatus comprises a modular, submersible, vertically positionable crater sink mechanism operable to form a crater in a bed of material beneath a body of water. The crater sink mechanism comprises an elongated tubular housing closed at its upper... | 01/28/1992 |
| 5020858 | Method of and apparatus for forming and transporting mud clogs A method of transporting mud, in which mud agitated and fluidized is supplied, while being pressurized by a pressurizing vane, through a check valve to a mud supply portion, and in which pressurizing air is supplied to the mud supply portion in a mud tran... | 06/04/1991 |
| 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 |
| 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 |
| 4854058 | Dredging apparatus having a diver-operated hand-held dredge head for quasi-closed loop system Dredging apparatus including a diver-operator controlled and hand-held dredge head which permits the diver to move about freely in the water bed being dredged, and provides for continuously dredging the mixture of water and solids from a first body of wat... | 08/08/1989 |
| 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 |
| 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 |
| 4760656 | Placer mining apparatus with puddling nozzle A placer mining apparatus for intaking a slurry of water and ore bearing soils and directing the slurry to an ore separating mechanism is provided with a suction nozzle for intaking slurry and an integral puddling nozzle for selectively supplying water to... | 08/02/1988 |
| 4541927 | Environmental protection dredging system for separating solids and liquid An environmental protection floating dredging system for removing material from the bottoms of bodies of water, separating it into liquid and semi-solid and solid components by the action of co-acting on-board centrifugal separators and dryers of the soli... | 09/17/1985 |
| 4521305 | Rotating self-cleaning screen A rotating self-cleaning screen capable of functioning as a dredge cutterhead, and also usable to screen debris from a conduit. A motor-driven rotating drum screen having openings defined in the periphery thereof includes a debris ejector rotating about a... | 06/04/1985 |
| 4503629 | System for collecting and conveying undersea mineral resources A system for collecting mineral resources on the ocean floor, having an automotive collector for collecting mineral resources, a collection vessel which is connected to the automotive collector so that the collected mineral resources are fed to the collec... | 03/12/1985 |
| 4412394 | Dredging suction-jet head A placer stream dredging head including a relatively short section of open end pipe coaxially secured to the depending end of a boat supported gangue tube. A closed bottom cage is connected with the depending end of the pipe section. A first force pump su... | 11/01/1983 |
| 4407716 | Liquid flow system including multi-axial liquid flow screening means for excluding oversized slender objects carried by a liquid A liquid flow system which comprises means to screen long slender objects from a liquid flowing in a conduit. The screening means comprises a set of opposed, aligned, undulating surfaces, each having axes of curvature extending in at least two directions.... | 10/04/1983 |
| 4399622 | Fluid intake openings for a suction dredger A dredging apparatus is afforded having the improvements of a wedge-shaped dredge foot housing both a fluid opening and a filter member, the intake opening being located on the underside of the dredge foot and the filter member being located above the flu... | 08/23/1983 |
| 4387518 | Separable liquid flow screening means for excluding oversized, slender objects carried by a liquid, and dredge means including same This invention provides means to screen long, slender objects from a flowing fluid, and more particularly provides means to clear jammed objects therefrom. The screening means comprises a set of opposed, aligned, undulating surfaces, preferably formed as ... | 06/14/1983 |
| 4367601 | Separable means for excluding oversized slender objects For screening oversized objects and especially long slender particles wherein the long dimension of the particle is aligned in the direction of flow through a fluid-flow conduit, there is provided a screen comprising a pair of opposing corrugated surfaces... | 01/11/1983 |
| 4352251 | Hand operated suction dredge head and hydraulic submersible pump assembly A portable and lightweight suction dredge head which is held by a diver and is hand operated so as to be easily moved about in the working position. These heads are, for example of sizes from three inches to eight inches in intake diameter. The dredge hea... | 10/05/1982 |
| 4347675 | Dredging means having means for excluding oversized slender objects This invention provides dredging means having means to screen long slender particles wherein the long dimension extends in the direction of flow through a fluid-flow conduit. The screening means comprises a pair of opposing corrugated surfaces, the folds ... | 09/07/1982 |
| 4346937 | Dredging apparatus including suction nozzles There is provided a dredge vehicle supporting a dredge assembly for collecting ore particles from the ocean floor. The dredge assembly includes several nozzles extending forwardly of the supports for the vehicle, pump means for developing a suction flow i... | 08/31/1982 |
| 4318233 | Powered liquid inlet screen A liquid inlet adapted to fit over the intake end of a suction hose for a portable dredging machine. The inlet is elbow shaped, having a discharge end mountable to the dredging machine suction hose. The opposite end of the inlet includes a set of spiral-s... | 03/09/1982 |
| 4264105 | Siphon dredge mining system A dredging system operates entirely by siphon action and includes a completely sealed conduit system having the intake end disposed upstream or at an upper level from the outlet end which is disposed sufficiently below the inlet end to maintain a flow of ... | 04/28/1981 |
| 4178704 | Suction nozzle dredge head To mechanically assist the suction action of a dredge head in dislodging particles embedded, e.g., on the ocean floor, a plurality of fingers extend downwardly from along the upper edge of an obliquely downwardly and forwardly facing nozzle opening. The f... | 12/18/1979 |
| 4170079 | Dredge with rotatable cutter discs In a vessel-mounted dredging device in which material freed by revolving cutters is pumped through a suction mouth and discharge pipe to a place remote from the cutters, a submersible dredge pump is mounted on a platform which supports cutter discs spaced... | 10/09/1979 |
