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 |
| 7997298 | Device for regulation of a concentration for a product in a liquid Device for the regulation of the concentration of a product in a liquid and, most specifically, of an alcohol used in the composition of a varnish contained in a varnishing vat for optical glasses or other substrates. The vat comprises an overflow tray and a sealed ... | 08/16/2011 |
| 7392820 | Liquid shut-off valve An automatic shut-off valve suitable for watering of batteries is disclosed. The valve is formed by a chamber having an inlet and an outlet. A seat surrounds the outlet. A spring biased piston within the cylinder is movable into and out of sealing engagement with th... | 07/01/2008 |
| 7300575 | Portable filter system A filter system for receiving an aqueous-based fluid contaminated with particles and emulsified contaminant oil, removing the particles, and separating the emulsified contaminant oil from the aqueous-based fluid includes a filter media for receiving the aqueous-base... | 11/27/2007 |
| 7294120 | Automated instillation apparatus and method An automated instillation apparatus and method for instilling fluid into a patient having an intestinal stoma thereby administering an antegrade colonic enema. The automated instillation apparatus comprising in combination: a fluid reservoir, a pump, a pump control ... | 11/13/2007 |
| 7143781 | Flexible bladder apparatus for fluid flow control The present invention provides an apparatus and method for controlling the flow of fluids through a conveyance with a hydraulic valve including a flexible portion. The flexible portion is positioned in the conveyance so that fluid enters the membrane from an upper c... | 12/05/2006 |
| 6591862 | System and method for carrying out column tests under hydrostatic pressure A closed ƊPstat -installation is disclosed for the potential-independent control of the pressure difference for continuous column tests under high hydrostatic pressure, as well as a pressure difference control process useful in particular for ... | 07/15/2003 |
| 5718261 | Cleaning solution dispenser for use in a water tank, and water tank capable of discharging mixture of water and cleaning solution A cleaning solution dispenser installed in a water tank 2 includes a container 3 and a tubular flow regulator 4. The container receives cleaning solution therein and is formed with a downwardly opening outlet 31. The flow regulator extends into the outlet... | 02/17/1998 |
| 5678600 | Filling valve A multi-purpose automatic filing basin is provided for containing a selected amount of water which is used for various purposes. The water may be transferred from the basin by wicks or by a pump to water using devices such as plant pots or toys or may be ... | 10/21/1997 |
| 5653533 | Apparatus and method for introducing liquid additives into a concrete mix A concrete mixing system includes reservoirs of liquid additives, where the additives are combined with concrete mix to add desired properties thereto. These reservoirs of liquid additive are connected to a storage chamber and a controller which controls ... | 08/05/1997 |
| 5486285 | Air inlet valve for water cooler For use in a water cooler having a reservoir adapted to receive the neck portion of an inverted water tank, a filter system comprising an attachment removably connected to the neck and forming a water-tight seal therewith, a sleeve projecting from the att... | 01/23/1996 |
| 5339858 | Device for restoring a fluid level in a fluid receptacle The invention provides a device for restoring a fluid level in a fluid receptacle to a predetermined level when the fluid level falls below the predetermined level, said device including: a closed vessel for containing a fluid supply, the vessel having an... | 08/23/1994 |
| 4921639 | Ultrasonic humidifier An ultrasonic humidifier having a pair of water tanks which release their water into a reservoir in a staggered sequence. The staggered emptying of the water tanks enables the tanks to be refilled in a more efficient manner. Several different embodiments ... | 05/01/1990 |
| 4653529 | Plant watering device An intermittently operating watering device has a water reservoir for supplying successive flows of water to a pair of receptacles which are separated from one another by a weir. The water also flows into an air space where it covers the lower end of an a... | 03/31/1987 |
| 4619072 | Method and apparatus for irrigating plants A method and apparatus for irrigating plants in a controlled manner. The method includes the alternate steps of moving the irrigating liquid from a reservoir containing the liquid to a plant-accommodating container situated at a level higher than that of ... | 10/28/1986 |
| 4617806 | Liquid level control apparatus A liquid level control apparatus which detects a liquid level in a tank employed, for example, in ice making equipment, to thereby trigger a control operation. The level control apparatus comprises a tank containing a body of liquid, a float movable in re... | 10/21/1986 |
| 4607399 | Automatic pool water regulator apparatus A pool water regulator has two vertical pipes which indicate the pool water level. Each pipe has a floating element disposed therein, and each float element has a switch secured to a distal end protruding from the vertical pipes. Brackets are mounted adja... | 08/26/1986 |
| 4566484 | Liquid level control apparatus An apparatus for controlling the flow of liquid from a conduit into a tank to maintain a selected level, which is an improvement on the conventional type of float-operated flow valves which use a diaphragm clamped between two flanges and positioned over t... | 01/28/1986 |
| 4449477 | Liquid dispenser Apparatus for dispensing a liquid utilizing surface tension of the liquid for control of amount dispensed.... | 05/22/1984 |
| 4441520 | Hydraulic fluid reservoir system An upper sealed reservoir and a lower vented reservoir are connected by a conduit and tube extending into the lower reservoir. A shroud forms a chamber around the end of the tube within the lower reservoir and is vented at its upper end. Openings are prov... | 04/10/1984 |
| 4368593 | Device for storage and dosed delivery of liquids A device for the storage and dosed delivery of liquids, comprising a tank for containing a liquid, the tank having at least one opening for filling with the liquid and for discharge of the liquid from the tank, the tank being movably mounted in relation t... | 01/18/1983 |
| 4347687 | Watering system for flower pots and plant boxes A watering system for flower pots and plant boxes which uses watering cylinders located adjacent to the plant roots with the watering cylinders connected to a water supply unit through a closed pipeline system with the water supply unit maintaining a cons... | 09/07/1982 |
| 4342376 | Adjustable constant level oiler and tool for making adjustments A constant level oiler is disclosed which includes an adjustable nozzle assembly for establishing the operating or working level of the oil lubricant in the oil chamber and to a user assembly. A tool is further disclosed which is insertable into the oiler... | 08/03/1982 |
| 4311114 | Low shear gravity controlled yarn finish supply system In this invention yarn finish is supplied to the yarn applicator supply pan with the level controlled by intermittent admission of air to the top of a distribution tank through an air tube which is intermittently submerged and sealed with yarn finish at t... | 01/19/1982 |
| 4240991 | Humidifier Disclosed is a self-contained evaporator type humidifier adapted to be positioned at an outlet opening of a warm air heating system and operated solely by an air stream issuing therefrom. The humidifier includes a housing provided with an air inlet openin... | 12/23/1980 |
| 4195652 | Liquid level control for a transmission sump A liquid level control for a transmission sump wherein excess fluid is stored in an external reservoir. The external reservoir is connected to a vacuum source, such as the engine manifold, above the liquid level in the external reservoir. The external res... | 04/01/1980 |
| 4176694 | Automatic shutoff liquid dispensing valve A dispensing valve for controlling the flow of a liquid from a container into a receptacle is described. Such valve is designed to terminate liquid flow automatically when the liquid level within the receptacle reaches a predetermined height. It includes ... | 12/04/1979 |
| 4154194 | Apparatus for coating a viscous medium onto predetermined surface portions of workpiece members An apparatus is provided for coating workpiece members fed one at a time to a coating station whereat individual workpiece members are coated with a viscous coating medium supplied from a reservoir under constant hydrostatic pressure to ensure coating of ... | 05/15/1979 |
| 4142976 | Barometric leg for rotary vacuum filter A rotary vacuum filter having a barometric or drop leg for generating vacuum in the filtration cycle of the filter wherein the end of the leg immersed in the seal pit is formed to a frustro-conical configuration for both reducing turbulence in the seal pi... | 03/06/1979 |
| 4108201 | Sensing probe for gravity induced flow liquid level regulator A liquid level sensing probe for gravity induced flow liquid level regulators used for maintaining a desired level of a liquid in a sump of a device having moving components within or adjacent the sump, such as maintaining a desired oil level in the crank... | 08/22/1978 |
| 4096879 | Adjustable fluid flow regulator A rate of flow regulator comprising upper and lower fluid chambers, the upper chamber having a double acting float valve to maintain a predetermined level of fluid therein, vent means venting each chamber to atmosphere, and metering means for regulating f... | 06/27/1978 |
| 4047655 | Liquid level control means and method A pressured gas in a control chamber is used to repetitively change the levels of liquid in a container up and down between two levels and holding at the two levels for predetermined time intervals to permit a function, such as a plurality of soldering op... | 09/13/1977 |
| 4033483 | Remote liquor dispensing system A gravity feeder for a liquor distribution system includes a manifold having a vented chamber, there being a series of vertically extending nipples on the manifold that are of different lengths. Interchangeable feeder caps detachably secured to individual... | 07/05/1977 |
| 4033289 | Fluid flow distribution device and strip oiler system utilizing the same A strip of sheet metal moves horizontally between upper and lower felt rollers, turning them in opposite directions so that the lower roller continuously picks up oil from an oil bath. Oil is dripped down onto the upper roller from a device which is conti... | 07/05/1977 |
| 3983958 | Method and apparatus for observing, indicating and maintaining fluid level Apparatus is provided for attachment to a bearing housing through an access conduit, which provides means for allowing observation of the lubricating oil in the bearing housing, ascertaining the level of oil in the lubricating housing, and maintaining a d... | 10/05/1976 |
| 3941147 | Level control for surface treatment baths A level control device for pickling, degreasing, nickel-plating baths or the like, comprising at least two baths of different specific gravities, wherein the two baths are joined to a connecting pipe and the connecting pipe runs into the bath of lower spe... | 03/02/1976 |
