Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8127787 | Siphon breaker A siphon breaker includes a housing having a gas inlet and a gas outlet. The siphon breaker includes a stop valve adapted to transition from a closed position in which gas is substantially prevented from entering the gas inlet, and an open position in which gas is i... | 03/06/2012 |
| 7351330 | Iron and hydrogen sulfide removal apparatus An automated system controls operation of a filtration system. The filtration system includes an aeration tank and a filtration tank. The system includes a pressure sensor, an air pump, a bleed passage, and a pressure control. The pressure sensor measures a pressure... | 04/01/2008 |
| 7284540 | Fuel pump module anti-siphon valve A fuel pump system for a fuel tank having a first and a second section has a fuel pump and a jet pump disposed in the first section. The jet pump draws fuel from the second section of the fuel tank through a transfer line and delivers it to the first section of the ... | 10/23/2007 |
| 7134152 | Adaptable, low cost air gap and flow control A kitchen sink installation includes a plurality of adjacent kitchen sinks having drain tailpieces, a manifold pipe mounted substantially horizontally under the sinks and having a length and a plurality of discrete openings along its length, each of the openings fac... | 11/14/2006 |
| 7117856 | Fuel delivery systems A fuel delivery system for delivering fuel from a fuel tank to an engine includes a reservoir disposed within the fuel tank and a fuel pump, such as an electrically driven fuel pump, operable to draw fuel from within the reservoir. The fuel pump has a first port and... | 10/10/2006 |
| 7077109 | Fuel pump assembly for vehicle A fuel pump assembly mounted in a fuel tank for sending fuel to a fuel injector includes a driving means for supplying a driving force for sending or returning fuel, a reservoir for temporarily reserving fuel from the fuel tank through a check valve mounted on a bot... | 07/18/2006 |
| 7059341 | Discharge ducts for pumping water from a supply reservoir to a delivery reservoir A discharge duct for discharging pump water from a supply reservoir defined by a first minimum water level and a supply reservoir floor to an operatively higher located delivery reservoir defined by a second minimum water level and the delivery reservoir floor, the ... | 06/13/2006 |
| 6945267 | Self-restarting pool cover siphon A self-restarting pool cover siphon includes a weighted housing placed on a pool cover having water thereon, the housing having a hollow interior and openings through which water can enter, a tube in fluid communication with the hollow interior and through which wat... | 09/20/2005 |
| 6634376 | Back flow preventing eductor An anti-backflow eductor has a resilient sealing sleeve disposed on a water port defining blind end tube. The sleeve has a thinner wall cross section at a discharge end to enhance sealing while facilitating increased water flow. The ports in the blind end... | 10/21/2003 |
| 6256801 | Siphon assemblies A siphon assembly for a flushing cistern, said assembly including an inverted generally U shaped duct having an up leg and a down leg the up leg being provided with an enlarged chamber having a lower end open to the interior of the cistern in use and the ... | 07/10/2001 |
| 6142705 | Pond management system A method of managing ponds that have standpipe overflows, such method including installing of a capped sleeve over the standpipe with the horizontal area between the wall of the sleeve and the wall of the standpipe being equal to or greater than the horiz... | 11/07/2000 |
| 6056886 | Water level and flow control device and skimmer box provided with this device A system for controlling a flow of water out of a container in a manner to prevent the generation of noise as an incident to the outflow and to permit adjustment of the water level in the container, the container being a component of apparatus for maintai... | 05/02/2000 |
| 5979485 | Fuel tank level equalizer system A fuel delivery system for vehicles with more than one fuel tank or a single tank with separate sections under at least some fuel level conditions. The system has an electric fuel pump disposed in the fuel container and a jet pump connected to the electri... | 11/09/1999 |
| 5964447 | Water valve assembly having attachment mechanism which prevents a fluid conduit from becoming detached from a valve body A water valve assembly includes a valve body having defined therein (1) a first channel, and (2) a first threaded portion. The water valve assembly also includes a first stop attached to the valve body and a second stop attached to the valve body, the sec... | 10/12/1999 |
| 5881753 | Passive fluid level controller A fluid level controller which replaces fluid lost from a container thus maintaining the fluid level in the container. It is comprised of the following major pieces: an airtight reservoir (10) with cap (14), fill stem (12), feed lube (16), and tube attach... | 03/16/1999 |
| 5475879 | Swimming pool overflow protector A system for overflow protection for swimming pools and tanks that conserves water by taking excess water from the bottom of the tank including a weighted hose directed near the bottom of the tank and connected to the protector. The protector has inlet, o... | 12/19/1995 |
| 5403521 | Blow system and a method of use therefor in controlling the quality of recycle cooling water in a cooling tower A water quality control method for recycling cooling water in a cooling tower equipped with a blow system and water treatment agent introduction means. Water is made up in response to the blow-down amount encountered by a blowing operation, and water trea... | 04/04/1995 |
| 5358000 | Siphon pump having a metering chamber A siphon pump system for pumping water from a water source to a supply destination. The system includes a holding canister through which the water flows, and a first timing bucket associated with the holding canister for controlling the admission of air i... | 10/25/1994 |
| 5274855 | Siphon flushing mechanism and method A siphon flush mechanism is provided for a conventional commode water storage tank in which a siphon metering valve is utilized to control the level of water contained within the flush mechanism. An arcuate flexible connector tube is lifted by the action ... | 01/04/1994 |
| 5151174 | Installation for the disinfection of clarified sewage with UV apparatus built into siphons The discharge conduit by which clarified sewage is withdrawn from a sewage clarification plant comprises a headwater conduit section and a low-water conduit section, the latter being separated from the former. The two conduit sections are connected to eac... | 09/29/1992 |
| 5016667 | Device for a dish-washer A device for a dishwasher comprising a tub (10) in which liquid is circulated for cleaning the dishes. The dishwasher has a drain pump (14) with an inlet which is placed adjacent the bottom of the tub and a conduit (16) which is connected to the outlet (1... | 05/21/1991 |
| 4911891 | Sample monitoring instrument for on-line application An apparatus and method for on-line monitoring of a characteristic of a process liquid stream includes a cell for isolating a precise volume of the liquid. There are provided means for over-filling a sample chamber and means for removing the excess from t... | 03/27/1990 |
| 4910151 | Sample monitoring instrument for on-line application An apparatus and method for on-line monitoring of a characteristic of a process liquid stream includes a cell for isolating a precise volume of the liquid. A sample chamber is over filled and the excess removed from the chamber by using a downwardly exten... | 03/20/1990 |
| 4861465 | Anti-reverse siphoning water circulating system for aquariums Apparatus for a recirculating aquarium water supply system having a tank with a discharge control device for maintaining the level of the water in the tank and incorporating an overflow receptacle in the tank and a prefilter receptable outside the tank fi... | 08/29/1989 |
| 4834132 | Fuel transfer apparatus A fuel supply system including a fuel tank, a feed conduit through which fuel is pumped from the fuel tank, and a return conduit through which excess fuel is returned to the fuel tank. The fuel tank has first and second sumps. The system comprises an ejec... | 05/30/1989 |
| 4810130 | Siphon weir with a ventilating mechanism A siphon weir having a downwardly directed inlet port and a lower lying outlet port (18) on the downstream side connected with it by means of an approximately S-shaped siphon line (13) contains a ventilating mechanism for improving the regulating behavior... | 03/07/1989 |
| 4425932 | Siphon ladling apparatus A device for transfer of critical liquids, such as molten metals, has a body member including a short leg inlet liquid conveying passage submergeable in a large storage vessel containing the critical liquid. An intermediate high level liquid conveying pas... | 01/17/1984 |
| 4364228 | Hydraulic turbine system with siphon action The hydraulic turbine system includes: an electric generator; rotary turbine blades; a hydraulic pump for operation by rotation of the turbine blades; a hydraulic motor for driving the generator; a hydraulic reservoir; and connections between the pump, the motor and the... | 12/21/1982 |
| 4361522 | Automatic flushing and draining apparatus for evaporative coolers Apparatus for periodically draining, flushing and replacing the operational water supply in an evaporative cooler during operation thereof and for completely draining the cooler when its operation is terminated. The apparatus includes a special siphon dra... | 11/30/1982 |
| 4333887 | Automatic flushing and draining apparatus for evaporative coolers Apparatus for periodically draining, flushing and replacing the water supply in an evaporative cooler during operation thereof and for completely draining the cooler when its operation is terminated. The apparatus includes a siphon drain valve mounted in ... | 06/08/1982 |
| 4289713 | Automatic flushing and draining reservoir apparatus for evaporative coolers Apparatus for automatically draining the water from an evaporative cooler when operation thereof is terminated and for periodically draining, flushing and replacing the water during operation of the cooler. The apparatus includes a comparatively small res... | 09/15/1981 |
| 4255361 | Automatic flushing and draining reservoir apparatus for evaporative coolers A pump, siphon drain valve, and at least the float portion of a float controlled shutoff valve are located in a comparatively small water reservoir tank which is dependingly formed in the floor pan of an evaporative cooler to locate the cooler's water sup... | 03/10/1981 |
| 4181142 | Siphon apparatus A siphon apparatus is provided which includes a liquid storage reservoir in which is mounted a conchoidial-shaped siphon having an inlet end and an outlet end. A trigger device is provided and is connected to the siphon and is operable for actuating the s... | 01/01/1980 |
| 4143674 | Valve for continuously and automatically supplying furnaces with molten metal A valve for use in an apparatus for supplying molten metal by means of a siphon to a furnace. A valve formed by a tube provided with two flanges is placed at the upper part of the siphon, this tube extending by a certain length below the level of the flan... | 03/13/1979 |
| 3997049 | Enclosure for hard and soft contact lenses An improved container for storing and conditioning both hard and soft contact lenses. A pair of lens-retaining baskets are pivotally mounted within the cap of a fluid-tight container. With the cap removed and inverted, the baskets may be folded outwardly ... | 12/14/1976 |
