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| Number | Title | Issue Date |
| 7934517 | Water level control system Systems for controlling the level of water with in reservoir, such as in a catch basin for an infinity pool. One embodiment of such a water level control system comprises a system housing having a removable front plate with front plate openings, and a water inlet in... | 05/03/2011 |
| 7325565 | Backflow valve The backflow valve of the present invention includes a valve housing having a cavity therein with an inlet and an outlet to the valve cavity. A switch is in communication with the valve cavity and is moveable from an off position to an on position in response to liq... | 02/05/2008 |
| 7059342 | Liquid shut-off system An automatic liquid shut-off system for a vessel and having a valve in a liquid passageway to control the level of liquid in the vessel so as to prevent an overflow of the liquid. The shut-off system comprises a conduit extending exterior from one wall of the vessel... | 06/13/2006 |
| 7003817 | Tank with automatic fill and overfill drain A device for obtaining a desired pool water level is provided. The device includes a tank in communication with a pool containing a automatic fill device and an overfill drain device in fixed relation to each other. The height of the automatic fill device and overfi... | 02/28/2006 |
| 6895990 | Water heater fail safe apparatus Apparatus for automatically shutting off the water supply to a leaking water heater includes a water collecting tray positionable beneath the heater, a valve mechanism attachable to the tray, a float mechanism, and an action arm interactive between the float mechani... | 05/24/2005 |
| 6732388 | Overflow system An overflow system suitable for use in controlling the level of water in, for example, a bathtub (3) is described. The overflow system comprises a conduit attached to the overflow outlet (21) of the bathtub (3) and is arranged so that when the b... | 05/11/2004 |
| 6332475 | Filling stop valve A stop valve to terminate flow of liquid there through when the level of the liquid reaches a desired level in a container. The stop valve includes a master diaphragm valve (38) to regulate the flow of liquid through the valve and a pilot diaphragm valve ... | 12/25/2001 |
| 6276200 | Liquid level controller A liquid level control system utilizes a sensor that is attached to a fixed support relative to a liquid container and transmits radio-frequency signals to a remotely located liquid supply system depending upon fluctuations in the liquid level. In the con... | 08/21/2001 |
| 6263906 | Overflow proof fluid level controller A mechanical fluid controller incorporates a float assembly which is disposed within an auxiliary reservoir. An outlet of the auxiliary reservoir is coupled to a U-shaped conduit, which is in turn coupled to an inlet of a primary reservoir. At least one o... | 07/24/2001 |
| 6260574 | Toilet tank fill valve connectable to riser with pre-selected height A fill valve particularly suited for OEM assembly in gravity operated flush toilets has a modular construction including a main valve body that encloses a pilot operated diaphragm valve operated by a float arm. A hollow riser has a lower end configured fo... | 07/17/2001 |
| 6202677 | Multi-functional cleaning and filtering system for aquarium tank A cleaning and filtering apparatus and method for a tank such as an aquarium. The major components are an inlet water controller, a suction unit, and a filter container unit. The filter container is selectively connected to the suction unit and a waste ou... | 03/20/2001 |
| 6142174 | Fill valve float arm connection A fill valve for a water storage tank includes a riser assembly, a valve housing mounted on an upper end of the riser assembly, and a pilot operated diaphragm valve mounted in the valve housing. A float housing is connected to the valve housing. A combina... | 11/07/2000 |
| 6129836 | Two-chamber fluid control valve and water softener incorporating same A two-chamber fluid control valve for a water softener system is provided. The valve includes a primary chamber having a primary inlet for passage of a primary fluid into the primary chamber and a primary outlet for passage of fluid out of the primary cha... | 10/10/2000 |
| 6095206 | Automatic liquid filling device and method of filling to a predetermined level A method and device for filling a container with liquid up to a predetermined level. The device includes a cylinder and a piston movable within the cylinder between a rest position and a fill position. A supply of liquid for filling the container is provi... | 08/01/2000 |
| 6035879 | Automatic fill valve assembly An improved automatic fill valve assembly that is readily securable in a level position for installation and that has inlets adapted to accept either a toilet tank fill valve or a float type valve inside of the housing of the fill valve assembly. One impr... | 03/14/2000 |
| 6003541 | Unitary float and arm for float operated valve A fill valve for a water storage tank includes a riser assembly, a valve housing mounted on an upper end of the riser assembly, and a pilot operated diaphragm valve mounted in the valve housing. A float housing is connected to the valve housing. A float a... | 12/21/1999 |
| 6000425 | Automatic remote fluid level controller A device comprising a chamber (10) with a maximum fluid level (14) established by an internal drain pipe (62) directing excess fluid to a point of disposal (44) and an internal replenishment fluid supply valve (16) providing any additional fluid required ... | 12/14/1999 |
| 5954082 | Apparatus and method for calibrating float valve An improved apparatus and method for calibrating a float-type vent valve for use in an automobile fuel tank. The valve is provided with a calibration plate in the lower end thereof below the float, the calibration plate defining an axially-adjustable supp... | 09/21/1999 |
| 5950692 | Arrangement for limiting the fill level of a fuel tank In an arrangement for limiting the fill level in a fuel tank having a filler neck with a tank inlet end, a valve flap is pivotally supported in the inlet end such that, in an open position, the valve flap is pivoted toward the fuel flow entering the tank ... | 09/14/1999 |
| 5920920 | Straight trap toilet apparatus A straight trap toilet apparatus mainly comprises a main body with a straight trap, a piston, and a toilet bowl. The water outlet of the main body is connected to a waste pipe, and the top of the main body is mounted below the toilet bowl. The main body h... | 07/13/1999 |
| 5887614 | Overfill prevention device for storage tanks An overfill prevention device for storage tanks includes an elongate tubular housing having a liquid flow passageway. A normally open main valve and a normally closed vapor retaining bleed valve are associated with the fluid passageway. Closure of the mai... | 03/30/1999 |
| 5868154 | Propane supply system with secondary containment tank A propane gas delivery system having a large storage tank, a supply conduit to deliver propane gas, a first regulator and a second regulator to reduce pressure, where a secondary containment tank is provided to receive and retain any liquid propane which ... | 02/09/1999 |
| 5839466 | Automatic watering device An automatic watering device for use with a stationary water reservoir includes an elongated hollow housing fixedly positioned relative to the reservoir, an elongated pipe having a first end extending into the housing and an opposite second end connected ... | 11/24/1998 |
| 5836346 | Pilot operated diaphragm fill valve An adjustable height fill valve assembly for controlling water level in a storage tank, comprises a lower riser assembly comprising concentrically disposed inlet riser and an outer riser housing, each having an upper end and a lower end, the inlet riser a... | 11/17/1998 |
| 5790991 | Apparatus for automatically regulating water level in a swimming pool Apparatus for monitoring and controlling the level of water in a swimming pool includes a vertically elongated vessel partially-buried below the pool water level at a location close to the return line from the filter to the pool inlet, a connector pipe ex... | 08/11/1998 |
| 5755257 | Retention gate A retention gate (20) is pivotable about a horizontal pivot shaft (22) mounted near the gate's upper edge and is located behind the overflow sill (14) of a storage drainage opening (12), said retention gate in its closed position being in sealing contact ... | 05/26/1998 |
| 5661855 | Reservoir fill valve control for toilet storage tanks A fill valve control system for toilet storage tanks, for preventing continued flow from a water supply thereto as a result of a flush valve leak or a tank leak, wherein the fill valve is responsive to a water level in a separate reservoir filled by a ful... | 09/02/1997 |
| 5518024 | Overfill prevention device for storage tanks An overfill prevention device for storage tanks includes an elongate tubular housing having a liquid flow passageway. A normally open main valve and a normally closed vapor retaining bleed valve are associated with the fluid passageway. Closure of the mai... | 05/21/1996 |
| 5421038 | Refilling preventing system for a toilet tank A refilling preventing system for a toilet tank, to prevent refilling of the tank in case of a leak, comprising: a receptacle in the tank in which the buoyant float of the fill valve is placed; a water filling conduit to fill the receptacle after a flush ... | 06/06/1995 |
| 5367723 | Valve for regulating water level in a swimming pool A valve apparatus is provided for regulating the water level in a swimming pool. The apparatus is mounted in a surge pit remote from the pool. The apparatus includes first and second valves movable between open and closed positions for controlling the int... | 11/29/1994 |
| 5365617 | Retrofit swimming pool water leveler and method A system for automatically maintaining a desired water level in a swimming pool, includes a float chamber coupled in fluid communication with a suction tube that is coupled between the pool and a pool filter pump. A float carrying a magnetic element is di... | 11/22/1994 |
| 5285533 | Anti-leakage apparatus for containers for liquid An anti-leakage apparatus for a toilet tank, consisting of a device for detecting leakage, a device for restraining water from entering the toilet tank in response to the leakage detecting device and a device for mounting the anti-leakage apparatus on the... | 02/15/1994 |
| 5271808 | Apparatus from waste oil for reclaiming a useful oil product An apparatus and a method are provided reclaiming a useful oil product from waste oil, such as used lubricating oil. The apparatus comprises an oil feed means, a boiler, a heater and a separating means. The heater is used to heat the waste oil in the boil... | 12/21/1993 |
| 5255703 | Float operated fill valve A fill valve assembly for a toilet tank or the like includes a riser and a head portion that can be vertically adjusted without removal or disassembly of the valve in order to select a precise tank liquid level. Telescoping conduits in the riser are secur... | 10/26/1993 |
| 5203367 | Apparatus for supplying liquid under constant pressure An apparatus for supplying a liquid under a constant pressure comprising a supply tank disposed at a higher lever than articles, i.e., containers, to be supplied with the liquid, an overflow plate partitioning the interior of the supply tank into a main t... | 04/20/1993 |
| 5176167 | Control valve A control valve includes a vertical housing having an upper float chamber, a lower valve chamber, and a valve seat support which is provided between the float chamber and the valve chamber, defines a passage communicating the float chamber and the valve c... | 01/05/1993 |
| 5103859 | Float chamber A valve for use in the float chamber of a boiling water unit. The valve consists of a body of circular horizontal cross section having a vertical outer wall. The inner portion of the valve body includes a central circular cut-out seat portion to accommoda... | 04/14/1992 |
| 4947888 | Toxic fluid and vapor handling apparatus A trough surrounding the base of a machine for trapping the spilled chemical and draining it into a pit in which a pump is located that is automatically engaged to pump the spilled chemical into a closed holding tank. A vapor detecting device will, upon t... | 08/14/1990 |
| 4903724 | Liquid level control system A liquid level control system for automatically stopping the flow of water in a bathtub. The system includes an adjustable level control mechanism and a flow control device. The control mechanism comprises a float suspended from a flexible chain and slidi... | 02/27/1990 |
| 4868933 | Flush control devices A flush control device for controlling the flush operation of a flush toilet having a cistern, a feed water control mechanism fluidly coupled to a water supply pipe and a flush water control mechanism fluidly coupled to one end of a flush pipe, the opposi... | 09/26/1989 |
