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| Number | Title | Issue Date |
| 7971601 | Water circulation system valve assemblies having water temperature control A valve assembly for a water circulation system includes a valve body defining a bypass passage between a hot water side and a cold water side of the valve body. The bypass passage has a valve seat therein. A bypass valve is received within the bypass passage. The b... | 07/05/2011 |
| 7832421 | System and method for making hot water available in a domestic water installation and domestic water installation A method, system and device for making hot water available in a water-supply system is disclosed. The water-supply system includes a source of hot water, a hot-water line and one or more tap connections for hot water connected to the hot-water line. The method inclu... | 11/16/2010 |
| 7779857 | Hot water system A hot water system includes a hot water source; a hot water delivery line connected between the hot water source and at least one plumbing fixture along with a cold water delivery line connection between said plumbing fixture, a cold water source and said hot water ... | 08/24/2010 |
| 7287707 | Water control fixture having thermostatically controlled bypass valve A water control fixture having an operating valve and a thermostatically controlled bypass valve disposed in the fixture for bypassing water away from the fixture until the water temperature reaches a desired level. When pressurized water from the hot water heater r... | 10/30/2007 |
| 7212468 | Master/slave clock system with automatic protocol detection and selection Disclosed is a method for automatically detecting and selecting a time correction protocol and a time base, from among many possible protocols, in a master/slave clock system. A “self-teaching” feature is also disclosed, which includes a table stored at the slav... | 05/01/2007 |
| 7198059 | Apparatus and system for retrofitting water control valves A water control fixture having an operating valve and a thermostatically controlled bypass valve disposed in the fixture for bypassing water away from the fixture until the water temperature reaches a desired level. When pressurized water from the hot water heater r... | 04/03/2007 |
| 7191789 | Transition adaptor and component modules for hydronic heating A system for making modular all of the components of hydronic heating systems so that they can be assembled in various configurations with a minimum of error and labor. The system includes a modular transition adaptor that completes a first hydronic loop and provide... | 03/20/2007 |
| 7178543 | Rapid hot water apparatus and method An apparatus is shown for attachment to a plumbing system for the rapid on-demand delivery of hot water through the plumbing system to an ultimate point of use. The apparatus includes a diverter valve located in a hot water supply line upstream of the point of use. ... | 02/20/2007 |
| 7140382 | Water circulating system having thermostatically controlled bypass valve A water circulating system including a water control fixture having an operating valve and a thermostatically controlled bypass valve disposed in the fixture for bypassing water away from the fixture until the water temperature reaches a desired level. When pressuri... | 11/28/2006 |
| 7140378 | Instantaneous water heater A system for instantaneously heating water has a heat exchanger for heating cold water to produce overheated water; a hot water supply member connected to a first intake of the heat exchanger; a cold water supply member connected to a second intake of the heat excha... | 11/28/2006 |
| 7108015 | In-line flow through diaphragm tank An in-line expansion tank. As fluid traverses a pipe within the tank, it may pass into and displace a diaphragm disposed outside of the pipe if the fluid pressure is greater than a tank pressure pushing the diaphragm against the pipe. When the fluid pressure decreas... | 09/19/2006 |
| 7089960 | Ball valve The present invention is a ball valve which may be attached to a fluid pipe for connection/disconnection between an entrance and an exit. More particularly, the present invention is a ball valve having a discharge orifice communicating with ambient air in addition t... | 08/15/2006 |
| 7089955 | Recreational vehicle low temperature water supply warming system The present recreational vehicle water warming and circulating system uses the heated water in the water heater to heat the on-board water supply when the outside air temperature drops below the freezing point of water. The system includes a holding tank for contain... | 08/15/2006 |
| 7077155 | Hot water recirculating system A hot water circulating system to provide instant hot water including a hot water source connected to one or more fixtures and a hot water return line from the fixture to the hot water source including a check valve and a continuous circulation pump in the return li... | 07/18/2006 |
| 7073528 | Water pump and thermostatically controlled bypass valve A water control valve configured for use with a bypass valve to automatically bypass cold or tepid water in a hot water supply line so as to maintain hot water at the fixture. The water control valve is useful for shower/tub facilities and for appliances such as was... | 07/11/2006 |
| 7069941 | Electronic faucets for long-term operation An electronic faucet (10) mounted on a countertop (12) includes a housing, at least one fluid inlet line (24a, 24b) extending into the housing, a fluid outlet (46) from the housing, a solenoid (142, 143) for op... | 07/04/2006 |
| 7051754 | Immediate hot water supply device In a hot water distribution system, the water oscillation in hot water supply line maintains hot water line in heated condition by ensuring heat transfer from the water heater to a hot water line executing regenerative heat transfer technique. Fulfillment of longitu... | 05/30/2006 |
| 7044149 | Pipe fitting A pipe fitting with a body adapted for connection at a first end thereof to a supply pipe and at a second end thereof to a distribution pipe so as to permit fluid communication between the supply pipe and the distribution pipe. The body is provided with first valve ... | 05/16/2006 |
| 7036520 | Hot water heater recirculation system and method A hot water recirculation system includes a source of hot water, a fixture, a fluid circuit, a fluid pump, and an electrical circuit sensor. The fixture is remote from the source of hot water and is configured to dispense hot water. The fluid circuit extends from th... | 05/02/2006 |
| 7025077 | Heat exchanger for instant warm water A method and apparatus for providing heated water to a hot water supply line positioned intermediate a hot water supply and a faucet. ... | 04/11/2006 |
| 7007858 | Compact boiler with tankless heater for providing heat and domestic hot water and method of operation A small and compact boiler for providing hot water for indoor heating and domestic hot water and method of operation are provided. The boiler includes a three way valve configured to circulate boiler water through a heating circuit when indoor heat is required, and ... | 03/07/2006 |
| 7000631 | Apparatus for maintaining fluid temperature An apparatus for maintaining water temperature comprised of an inlet, a mechanical temperature controlled shutoff valve, a check valve and an outlet. The shutoff valve and check valve are positioned between the inlet and outlet to provide for the shunting of water f... | 02/21/2006 |
| 7000626 | Instantaneous and constant fluid delivery system This is a method and means for maintaining a constant supply of a fluid with specific characteristics within a fluid supply conduit from a supply source of the fluid with specific characteristics at a point of service of the fluid with specific characteristics in wh... | 02/21/2006 |
| 6997200 | Water conservation system The invention recirculates and/or recycles fluids normally lost down the drain during the time it takes for a desired temperature to be attained for usage of the hot fluids. A recirculating/recycling valve, through which hot fluids may flow, has an additional port f... | 02/14/2006 |
| 6962162 | Method for operating a multi family/commercial plumbing system A method for operating a multi-family/commercial plumbing system includes sensing an event and recording for each sensed event at least one parameter selected from the group consisting of date, day of the week, start time, duration of the event, water flow, water te... | 11/08/2005 |
| 6953053 | Pressure relief valve assembly A relief valve assembly including a valve member, having inlet and outlet bores, for sliding movement within a valve body bore portion, having a cylindrical sleeve portion, journalled via a cylindrical sleeve bearing for substantially the entire axial extent thereof... | 10/11/2005 |
| 6929187 | Water control fixture having thermostatically controlled bypass valve A water control fixture having an operating valve and a thermostatically controlled bypass valve disposed in the fixture for bypassing water away from the fixture until the water temperature reaches a desired level. When pressurized water from the hot water heater r... | 08/16/2005 |
| 6920844 | Thermal expansion arrester for water heaters A thermal expansion arrester for positioning within the tank of a water heater comprises a rigid tube maintaining a compressible volume of gas between first and second closure members wherein at least one of the closure members comprises a piston that is slidably an... | 07/26/2005 |
| 6895985 | Smart device and system for improved domestic use and saving of water A system for providing a user with water at a desired temperature comprising a piping system that includes a hot water pipe and a cold water pipe, a pump coupled to the piping system and a smart water delivery device coupled to the piping system and to the pump and ... | 05/24/2005 |
| 6779552 | Domestic hot water distribution and resource conservation system A domestic water distribution system that continuously delivers heated water to one or more hot water faucets. The system utilizes a convective return loop from the desired faucets, which is regulated by a flow control device. The control device is specifically desi... | 08/24/2004 |
| 6598616 | Tapping point and supply water network comprising such tapping point A water tapping point with a hot water inlet; a cold water inlet, a hot water space, a cold water space, a mixing chamber, a hot water outlet from the hot water space and a cold water outlet from the cold water space. A characteristic feature of the inven... | 07/29/2003 |
| 6536464 | Thermostatically controlled bypass valve and water circulating system for same A thermostatically controlled bypass valve for bypassing water away from a hot water valve until the water temperature reaches a desired level at a fixture in use for home or industrial applications. The bypass valve has a valve body with a thermally sens... | 03/25/2003 |
| 6532906 | Inlet heat recovery module for water heater A water heater includes a storage tank communicating with a cold water supply pipe and a hot water supply pipe for the respective supply of cold water to, and removal of hot water from, the tank. The water heater also includes an insulated heat recovery m... | 03/18/2003 |
| 6453938 | Warm drinking water conduit system The invention relates to a warm drinking water conduit system, with at least one drinking water heater/storage tank for warm drinking water, with a fresh water supply conduit for supplying cold drinking water into the tank and with a heat exchanger connec... | 09/24/2002 |
| 6286464 | Water heating system A water heating system in which the output water temperature is regulated by a mixing valve which allows the temperature of the water contained within the water heater to be maintained at a much higher temperature without compromising safety. Significantl... | 09/11/2001 |
| 6227235 | Temperature regulated hot water recirculation system In a hot and cold water distribution system, cooled down water in the hot water distribution line is automatically drained toward the cold water distribution line by a connection system consisting essentially of a centrifugal pump in series with a valve o... | 05/08/2001 |
| 6182683 | Water recirculation manifold A water recirculation system is disclosed for moving water from a hot water tap to a cold water tap. The recirculation system includes a water manifold that houses a pump, solenoid, check valve and temperature switch. Water is moved between these componen... | 02/06/2001 |
| 6164307 | Non-circulating, rapid, hot tap water apparatus and method Apparatus for attachment to a plumbing system having a warm water outlet, for rapidly delivering hot water through the plumbing system to the warm water outlet, comprising a diverter valve attachable to a building water pipe upstream of the warm water out... | 12/26/2000 |
| 6161567 | Single chamber water circulator An integral water circulation device reliably provides rapid hot water at remote hot water faucets throughout a building by creating a low rate convective circulatory flow from the building water heater through a return line and the circulation device its... | 12/19/2000 |
| 6145808 | Drain valve for a water heater A drain valve for a hot water heater includes a hollow tubular portion having a tapered first end with an externally threaded neck extending therefrom. The tubular portion includes a pair of diametrically opposed internally threaded ports each having a pl... | 11/14/2000 |
