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| Number | Title | Issue Date |
| 7891370 | Irrigation device with freeze member An irrigation device includes a chamber having a peripheral wall made of a material susceptible to damage from the expansion of water in an interior of the chamber during freezing. A freeze member is located in the chamber and is made of a compressible material. The... | 02/22/2011 |
| 7686028 | Structure of straight-out controllable ceramic valve of anti-freezing faucet An improved structure of straight-out controllable ceramic valve of anti-freezing faucet, which is comprised by cover water-receiving valve seat with open bottom, cylinder water-controlling shaft bolt that one end is covered into shaft hole at center of water-receiv... | 03/30/2010 |
| 7497228 | Freeze and backflow protection for a subterranean water flushing system A water flushing system for a pressurized subterranean water distribution system includes an inlet conduit for receiving pressurized water from the subterranean water distribution system; an outlet fluidly connected to the inlet conduit for discharging pressurized w... | 03/03/2009 |
| 7267898 | Freeze prevention of a fuel cell power plant A fuel cell power plant comprises a water circulation passage (5) which circulates the cooling water in a fuel cell stack (4). Sodium hydroxide which lowers the melting point of water is mixed with water in the water circulation passage (5) to p... | 09/11/2007 |
| 7243684 | Flow dividing device for gardening pipes A flow dividing device for gardening pipes includes a main body having a plurality of mounting studs, and a plurality of water control switches each mounted on the respective mounting stud. Each of the water control switches includes a control valve, an operation kn... | 07/17/2007 |
| 7216672 | Flow dividing device for gardening pipes A flow dividing device for gardening pipes includes a main body, and a plurality of water control switches each mounted on the main body. Each of the water control switches includes a movable member, a push member, a control knob, a universal connector, a pivot seat... | 05/15/2007 |
| 7156363 | Bathroom flushers with novel sensors and controllers A bathroom flusher (10) includes a body having an inlet (12) in communication with a supply line and an outlet (16) in communication with a flush conduit, a valve assembly in the body positioned to close water flow between the inlet and the outl... | 01/02/2007 |
| 7093608 | Vacuum pressure breaker and freeze protection for a water flushing system A water flushing system for a pressurized subterranean water distribution system includes an inlet conduit for receiving pressurized water from the subterranean water distribution system; an outlet fluidly connected to the inlet conduit for discharging pressurized w... | 08/22/2006 |
| 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 |
| 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 |
| 7004188 | Anti-rupture device The invention relates to a fluid conduit piece (8) for passing therethrough a spontaneously exothermic working fluid such as a synthetic polymer, a cellulose derivative and a solution on the basis of cellulose, water and amino oxide, said fluid conduit piece ... | 02/28/2006 |
| 6981848 | Methanol injection system and method to prevent freezing of a natural gas pipeline A system for injecting an injection fluid into a pipeline includes an injection pump, a timer for initiating sequencing of the pump, a control valve for controlling the flow of pressurized fluid to power the injection pump, a controller for controlling operation of ... | 01/03/2006 |
| 6971451 | Firefighting penetration tool A firefighting penetration tool for penetrating a surface and ejecting a fluid into an area on fire. The firefighting tool includes a weighted head, a planar surface area affixed to the weighted head and an interchangeable penetrating body projecting from the planar... | 12/06/2005 |
| 6948509 | Fluid hydrant A hydrant comprising a chamber forming a reservoir, an inlet configured to supply fluid to the hydrant and a sleeve configured to force static fluid out of an outlet, wherein a first portion of the chamber containing the reservoir is configured to be located in the ... | 09/27/2005 |
| 6892746 | Method and system for controlling a household water supply incorporating motion-sensing for determining whether a house is occupied A method and system for controlling a household water supply incorporating motion-sensing for determining whether a house is occupied, provides protection of structures and fixtures from water damage due to plumbing failure or other causes. The household water suppl... | 05/17/2005 |
| 6886580 | Frost proof valve The present invention relates to a valve assembly for use in below freezing conditions which includes a valve housing with a connection to a supply of fluid, and a primary chamber, and a secondary chamber, and a flexible diaphragm, and an equalisation port, and a sa... | 05/03/2005 |
| 6830063 | Freezeless protection device for wall hydrants/faucets A freezeless wall hydrant is provided that has an elongated inlet pipe comprised of a hollow tube. The tube is connected to a valve and fitting assembly on its inner end for connection to a source of water under pressure. On the outer end, the tube is connected to a... | 12/14/2004 |
| 6830062 | Spigot freeze dripper A dripper apparatus for a water spigot includes a coupler having a threaded female member for connecting to a water spigot. A generally cylindrical elongate member has a longitudinal portion in fluid communication with the female member. The longitudinal portion has... | 12/14/2004 |
| 6805154 | Freeze protection device for wall hydrants/faucets A freezeless wall hydrant has a fluid inlet end connected to a source of pressurized water, and a fluid outlet end. A check valve is placed in the bore of the valve body and is spring loaded to open only when extreme water pressure within the inlet valve lifts a spr... | 10/19/2004 |
| 6782908 | Automotive washer system utilizing a freezable washer liquid and a freeze-resistant washer liquid A washer system which includes a first reservoir containing a freezable washer liquid and having a drain port therein. The drain port is in fluid communication with the freezable washer liquid when the first reservoir is in at least a full state. The washer system a... | 08/31/2004 |
| 6769446 | Freeze protection device for wall hydrants/faucets A freezeless wall hydrant has a normally horizontal fluid inlet tube with an interior end and exterior end. A hollow valve fitting is rigidly secured to the interior end of the inlet tube for a connection to a source of pressurized fluid. A valve seat is located on ... | 08/03/2004 |
| 6722386 | Flow control apparatus and method The present invention provides a flow control apparatus and method. In accordance with the present invention, the flow control apparatus comprises a thermostat that automatically actuates valve to enable water to flow through the valve when the temperature of the ai... | 04/20/2004 |
| 6691724 | Method and system for controlling a household water supply A method and system for controlling a household water supply provides protection of structures and fixtures from water damage due to plumbing failure or other causes. The household water supply is shut-off in conformity with a determination that the house... | 02/17/2004 |
| 6622930 | Freeze protection for hot water systems In installations with water circuits such as domestic hot water or hydronic heating circuits a circulator pump is connected with a temperature sensor which energizes the pump as soon as the temperature of the water in the system falls below a predetermine... | 09/23/2003 |
| 6536458 | Device for heating a tap The aim of the invention is to prevent outer taps from being damaged by the effects of frost. To this end, the invention provides a heating device for heating a tap (1) with an electrothermal converter (2) means. Said heating device is mounted in or on th... | 03/25/2003 |
| 6532986 | Freeze protection device for wall hydrants/faucets A freezeless wall hydrant has a fluid inlet end connected to a source of pressurized water, and a fluid outlet end. A check valve is placed in the bore of the valve body and is spring loaded to open only when extreme water pressure within the inlet valve ... | 03/18/2003 |
| 6427712 | Ambient temperature shape memory alloy actuator A novel shape memory alloy (SMA) actuator which responds to changes in ambient temperature. The actuator is capable of operating bidirectionally over a smaller temperature range than conventional SMA actuators by taking advantage of the R-phase characteri... | 08/06/2002 |
| 6158455 | Antifreeze cap for faucet A cap assembly for providing continuous drip to a faucet exposed to freezing temperatures such as a faucet located outside a house. The cap assembly includes a cap member adapted to be mounted over the end of a faucet, which cap member includes a cylindri... | 12/12/2000 |
| 6142172 | Freeze protection device for wall hydrants/faucets A freezeless wall hydrant/faucet has an inlet pipe with one end connected to a source of pressurized water, a water discharge conduit, and an elongated control rod extending through the inlet pipe to open and close a fluid valve. A bore is inserted throug... | 11/07/2000 |
| 6058970 | Refueling vapor recovery system with differential pressure valve A fuel vapor control apparatus halts deterioration in operating characteristics of a fuel control valve at the time of fuel supply and prevents fuel vapor from being discharged into the atmosphere through a filler pipe. The fuel vapor control apparatus pr... | 05/09/2000 |
| 6021798 | Apparatus for preventing freezing of interior water pipes An apparatus for preventing freezing of interior water pipes. A thermal switch is attached to a hot and/or cold water supply pipe in a remote location that is prone to freezing in cold weather. The thermal switch electrically communicates with a power sou... | 02/08/2000 |
| 5785072 | Compressed stopper channel bypass pipe burst pressure relief apparatus for plumbing fixtures According to the present invention, water regulation assemblies disposed in the water supply path of conventional fixtures are modified to include a pressure relief assembly which permits release of water under elevated pressures. A shut-off seal of a fix... | 07/28/1998 |
| 5785073 | Pipe burst protection pressure relief apparatus for sliding plate plumbing fixtures According to the present invention, water regulation assemblies disposed in the water supply path of conventional fixtures are modified to include a pressure relief assembly which permits release of water under elevated pressures. A normal shut-off seal i... | 07/28/1998 |
| 5746240 | Freeze protection system for car washer units A freeze protection system for a car wash facility having a plurality of bays and having exposed water lines located in an area that is subjected to freezing temperatures. By using a temperature probe connected via a digital temperature meter to a micropr... | 05/05/1998 |
| 5730168 | Pipe burst protection pressure relief apparatus for plumbing fixtures According to the present invention, water regulation assemblies disposed in the water supply path of conventional fixtures are modified to include a pressure relief assembly which permits release of water under elevated pressures. A normal shut-off seal i... | 03/24/1998 |
| 5655561 | Wireless system for detecting and stopping water leaks A water-activated alarm system, providing an alarm in the event of a water leak, includes a radio-frequency transmitting unit and a receiving unit and a number of safety features to ensure proper operation in the event of an emergency. The transmitting un... | 08/12/1997 |
| 5553636 | Watering through fill valve control For use with a watering trough fill control valve having float structure located to rise as water is filled into the trough via the valve, and to effect closing of the valve when the trough is filled to predetermined extent, the float structure located to... | 09/10/1996 |
| 5551473 | Thermal expansion relief valve A fluid flow control valve, e.g. a pressure vacuum breaker, includes a thermal expansion relief valve for protecting the control valve against damage due to freezing. The control valve has a valve body of rigid material and defines a main conduit. The the... | 09/03/1996 |
| 5488968 | Fluidizing system and method A fluidizing apparatus, such as a winterizing apparatus, and related method for preventing freezing of water in the water pipes of a dwelling. The apparatus includes a pump, an inlet line, an outlet line, a pressure switch, and an air compressor tank. The... | 02/06/1996 |
| 5361795 | Furnace waste water freeze protection method A method to prevent freezing of water in a conduit that carries the water out of a building. The method uses a device that alternately accumulates the water in a container and then dumps it. The water is then carried to the outside of the building through... | 11/08/1994 |
