Freeze Condition Responsive Safety Systems Patents (Class 137/59)
  • Patent number: 9520604
    Abstract: A device and method for ensuring proper fuel cell system warmup or shutdown during freeze conditions. A three-way valve is used in conjunction with a flow-controlling orifice to ensure that the orifice avoids ice blockage during frozen conditions. Dry, warm air is delivered as a slip stream under pressure to a cathode flowpath, where the construction of the orifice is such that it is structurally compliant to promote flexing in response to the pressurized slip stream, thereby helping to break up any small amount of ice that may have formed in or on the orifice.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: December 13, 2016
    Assignee: GM Global Technology Operations LLC
    Inventors: James K. Leary, Bruce J. Clingerman, Ronald J. Daum
  • Patent number: 9359915
    Abstract: A power generation control system includes a converter and a controller. The converter controls a generator of a Rankine cycle system, the Rankine cycle system including an expander, the generator, which is interconnected to the expander, a pump which feeds a working fluid, and an evaporator which evaporates a working fluid. The controller causes the converter to execute, in at least one of a startup operation and a shutdown operation of the Rankine cycle system, first control in at least one of a startup operation and a shutdown operation of the Rankine cycle system such that the expander is prevented from expanding a working fluid if the working fluid at an outlet of the evaporator contains a liquid component while the pump is operating.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: June 7, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yoshio Tomigashi, Atsuo Okaichi, Tetsuya Matsuyama, Noriyoshi Nishiyama, Osamu Kosuda, Takumi Hikichi, Osao Kido, Masaaki Konoto
  • Publication number: 20150129046
    Abstract: In a method for operating a tank device of a motor vehicle, with the tank device having a tank and a tank ventilation device with at least one switching valve, an excitation current can be applied to the switching valve, and the switching valve opens only when the excitation current exceeds an excitation current threshold over a certain period of time. Provision is hereby made to apply an excitation current which is greater than the excitation current threshold, at least temporarily, in a first mode of operation to the switching valve for heating purposes, also when ventilation of the tank is not governed by a control unit of the tank device.
    Type: Application
    Filed: March 23, 2013
    Publication date: May 14, 2015
    Applicant: AUDI AG
    Inventor: Harald Hagen
  • Publication number: 20150075638
    Abstract: A plumbing freeze protection system comprises a fluid connection between a water supply line and a waste line. The fluid connection bypasses a plumbing fixture fluidly connected to the water supply line. A valve operable with the fluid connection alternately prevents water flow from the water supply line to the waste line, and allows water flow from the water supply line to the waste line within about 25 percent of maximum volumetric flow rate of the water supply line through the fluid connection. A timer is adapted to control the valve. The valve is open for a predetermined time period to deliver a short duration, high volumetric flow rate of water to the waste line to minimize ice formation in, and remove existing ice from, the water supply and waste lines.
    Type: Application
    Filed: October 6, 2014
    Publication date: March 19, 2015
    Inventor: James F. Park
  • Publication number: 20150033712
    Abstract: A method for draining a delivery unit for a liquid additive, in particular a urea-water solution, includes at least: a) producing an electrical connection by using a currentless switch which is constructed to produce an electrical connection when a temperature falls below a threshold temperature; and b) draining the delivery unit when, in step a), the electrical connection has been produced. The method can be used, in particular, in SCR systems for exhaust-gas aftertreatment for motor vehicles. A delivery unit and a motor vehicle having a delivery unit are also provided.
    Type: Application
    Filed: October 20, 2014
    Publication date: February 5, 2015
    Inventors: CARSTEN KRUSE, THOMAS NAGEL, SVEN SCHEPERS, JAN HODGSON
  • Patent number: 8865002
    Abstract: The present application is directed to a system and method for processing fluid captured from a vehicle surface to provide a desired fluid product. The system includes sensors and control circuitry to determine system fluid volume levels and/or the ambient temperature of the system to safeguard the system against non-requested activation or deactivation.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: October 21, 2014
    Assignee: Brimtech, LLC
    Inventors: James K Weigle, Ben A Hammock, II, Robert Tupper
  • Publication number: 20140261693
    Abstract: Apparatus and method are provided herein for causing and controlling the injection of antifreeze material into a water line of an irrigation system. The irrigation system comprises an antifreeze supply unit including an antifreeze storage container containing a liquid antifreeze coupled to a water line of the irrigation system. A control unit is coupled to the antifreeze supply unit. The control unit is configured to cause the antifreeze supply unit to inject at least some of the liquid antifreeze from the antifreeze storage container into the water line. The control unit can cause the antifreeze supply unit to inject the liquid antifreeze from the antifreeze storage container in response to temperature data received from a sensor unit or in response to user input at the control unit.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: RAIN BIRD CORPORATION
    Inventors: Steven D. Geerligs, Ronald J. Bailey
  • Patent number: 8833384
    Abstract: A valve and actuator assembly includes a valve to control a flow of liquid into a coil, and an actuator to control the valve. The assembly includes a first temperature sensor to sense the temperature of liquid flowing through the valve, a second temperature sensor to sense the temperature of air surrounding the coil, and a flow meter to measure a flow rate of liquid through the valve. The actuator includes a module that receives data from the first and second temperature sensors and from the flow meter, and determines, based on data received from the flow meter and temperature sensors, a likelihood that the liquid in the coil will freeze. The actuator operates the valve to allow a minimum flow of the liquid through the valve and coil during a potential freeze condition. The minimum flow is sufficient to prevent the liquid in the coil from freezing.
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: September 16, 2014
    Assignee: Schneider Electric Buildings, LLC
    Inventor: Alan Burt
  • Publication number: 20140158206
    Abstract: An improved vent ice prevention apparatus including a first conduit, a second conduit, and a third conduit, wherein the second conduit concentrically surrounds the first conduit thereby forming an annular region between the two conduits. The third conduit is in fluid communication with said annular region. The first conduit is configured to receive a cold vent stream, and the third conduit is configured to receive a dry purge stream and introduce the dry purge stream into the annular region in order to prevent ice formation.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 12, 2014
    Applicant: Air Liquide Process & Construction, Inc.
    Inventors: Bruce M. ELLIS, Minh Huy Pham
  • Patent number: 8739810
    Abstract: In a hydrant assembly, the combination comprising an outer tubular member having a first flow port.; an inner tubular member having a closure thereon to close the port in relatively axially advanced position of the closure, and to open the port in relatively axially retracted position of the closure that allows fluid flow through the port to an outlet, control means to control relative movement of the inner and outer members. A second port may be located sidewardly of the outer tubular member to pass fluid in relatively retracted position of the closure to relieve fluid pressure in space formed between the inner and outer members, the inner member being elongated and extending lengthwise in the outer tubular member. The outer tubular member may consist of plastic material. Travel of the closure acts to allow expansion of fluid as it freezes, to relieve pressure build-up within the assembly.
    Type: Grant
    Filed: April 26, 2012
    Date of Patent: June 3, 2014
    Inventor: Herbert W. Hoeptner
  • Patent number: 8662098
    Abstract: A method and apparatus for winterizing a plumbing system, the apparatus including a fluid reservoir, an air manifold, and a house inlet line. The house inlet line is coupled to the fluid outlet of the reservoir and the outlet of the air supply. The apparatus includes an air flow valve, a fluid valve and a reservoir air inlet valve. The house inlet line is adapted to provide antifreeze, air, or both to the plumbing system depending on the arrangement of the valves. The method includes blowing the fluid from the hot water lines, introducing antifreeze to the hot water lines, pushing antifreeze through the hot water lines, blowing the fluid from the cold water lines, introducing antifreeze to the cold water lines, and pushing antifreeze through the cold water lines.
    Type: Grant
    Filed: August 4, 2010
    Date of Patent: March 4, 2014
    Inventor: David S Foster
  • Publication number: 20140034145
    Abstract: A valve and actuator assembly includes a valve to control a flow of liquid into a coil, and an actuator to control the valve. The assembly includes a first temperature sensor to sense the temperature of liquid flowing through the valve, a second temperature sensor to sense the temperature of air surrounding the coil, and a flow meter to measure a flow rate of liquid through the valve. The actuator includes a module that receives data from the first and second temperature sensors and from the flow meter, and determines, based on data received from the flow meter and temperature sensors, a likelihood that the liquid in the coil will freeze. The actuator operates the valve to allow a minimum flow of the liquid through the valve and coil during a potential freeze condition. The minimum flow is sufficient to prevent the liquid in the coil from freezing.
    Type: Application
    Filed: August 6, 2012
    Publication date: February 6, 2014
    Applicant: SCHNEIDER ELECTRIC BUILDINGS, LLC
    Inventor: Alan Burt
  • Patent number: 8613290
    Abstract: An anti-inundation and drainage structure for an anti-freeze faucet contains a tube body, a controlling valve, and a control assembly. The tube body includes a chamber, an inlet, an outlet, and a coupling hole. The controlling valve is fixed in the chamber and includes a housing, an axial bolt, a first check device, a connector, a second check device, a ceramic shifting piece, a ceramic fixing piece, and a positioning member. The control assembly is coupled with the coupling hole and includes a rotating member connecting with a rod in the chamber of the tube body, the rod has a hollow passage defined therein and an air port formed on one end thereof so as to couple with the rotating member, another end of the rod relative to the air port is inserted into the second segment of the slot of the connector of the controlling valve.
    Type: Grant
    Filed: January 11, 2013
    Date of Patent: December 24, 2013
    Inventor: Cheng-Hsuan Wu
  • Publication number: 20130284280
    Abstract: In a hydrant assembly, the combination comprising an outer tubular member having a first flow port.; an inner tubular member having a closure thereon to close the port in relatively axially advanced position of the closure, and to open the port in relatively axially retracted position of the closure that allows fluid flow through the port to an outlet, control means to control relative movement of the inner and outer members. A second port may be located sidewardly of the outer tubular member to pass fluid in relatively retracted position of the closure to relieve fluid pressure in space formed between the inner and outer members, the inner member being elongated and extending lengthwise in the outer tubular member. The outer tubular member may consist of plastic material. Travel of the closure acts to allow expansion of fluid as it freezes, to relieve pressure build-up within the assembly.
    Type: Application
    Filed: April 26, 2012
    Publication date: October 31, 2013
    Inventor: Herbert W. Hoeptner
  • Patent number: 8561914
    Abstract: The temperature-responsive fluid flow control apparatus of the present invention comprises: a housing installed between the inlet and the outlet of a fluid pipe in which a fluid flows; a valve block installed inside the housing to allow inflow of the flowing fluid in the housing and to discharge a portion of the flowing fluid to the outside according to the change in the internal pressure; and a temperature-responsive device for generating a pressure difference in the valve block according to the temperature change of the temperature-responsive fluid filled therein. The temperature-responsive fluid flow control apparatus prevents the fluid flowing pipe from freezing by discharging a portion of the fluid flowing in the housing to the outside, when the temperature of the temperature-responsive fluid reaches a preset temperature as the external temperature drops.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: October 22, 2013
    Assignee: Sudo Premium Engineering Co., Ltd.
    Inventor: Jaeyoung Jung
  • Publication number: 20130269789
    Abstract: A system for storing an additive solution for a vehicle engine, said system comprising a tank for storing said additive solution, a pumping module for pumping said additive solution in the tank and an electrical heating device for heating the additive solution inside the tank when freezing conditions are detected, said electrical heating device being associated with electrical connecting lines for electrical supply of the heating device, wherein the heating device comprises at least an heating module provided in a blind pocket integral with the lower wall of the tank, said pocket opening outside the tank and projecting inside the internal volume of the tank from the lower wall and said electrical connecting lines for electrical supplying of the heating device being fully provided on the outside of the tank.
    Type: Application
    Filed: April 11, 2013
    Publication date: October 17, 2013
    Inventor: TI AUTOMOTIVE FUEL SYSTEMS SAS
  • Publication number: 20130228228
    Abstract: Provided are a temperature sensor 15 for detecting a temperature surrounding an EGR valve 12, judging means (IC chip 16) for judging on the basis of the detected temperature from the temperature sensor 15 whether an inside of a gas passage in the EGR valve 12 is frozen or not and a controller 17 for controlling an operation of the EGR valve 12. The controller 17 is adapted to forbid and allow an output of an operating command 17a to an actuator 14 for the EGR valve 12 when an inside of a gas passage in the EGR valve 12 is judged by the judging means (IC chip 16) to be frozen or unfrozen, respectively.
    Type: Application
    Filed: December 2, 2011
    Publication date: September 5, 2013
    Applicant: HINO MOTORS, LTD.
    Inventors: Kenji Akahane, Noriyuki Ishigami
  • Patent number: 8402984
    Abstract: The present invention is a system and method for detecting water in locations in homes and buildings etc. where it should not be present, and responding by terminating water inlet access to plumbing in the home or building etc., and by opening a pressure dump valve to relieve leak promoting pressure remaining in the plumbing.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: March 26, 2013
    Inventors: Keith J. Ziegenbein, Zachary J. Ziegenbein, Zebadiah W. Ziegenbein
  • Publication number: 20130000144
    Abstract: Provided are an apparatus for treating a substrate and a method for discharge a supercritical fluid, and more particularly, an apparatus for treating a substrate using a supercritical fluid and a method for discharging the supercritical fluid using the same. The apparatus for treating the substrate includes a container for providing a supercritical fluid, a vent line through which the supercritical fluid is discharged from the container, and a freezing prevention unit disposed in the vent line to prevent the supercritical fluid from being frozen.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 3, 2013
    Applicant: SEMES CO., LTD.
    Inventors: YongHyun Choi, Kibong Kim, Woo Young Kim, Jeong Seon Park
  • Patent number: 8307848
    Abstract: A freeze resistant manifold includes a plurality of conduits, junction, and expansion device. Each conduit of the plurality of conduits includes a respective first end in fluid communication with a respective second end. The junction is defined by each of the respective first ends of the plurality of conduits in direct fluid communication with a remainder of the first ends of the plurality of conduits. The expansion device includes a housing, plug, and linear actuator. The housing has a first housing end and a second housing end. The first housing end is in fluid communication with the junction. The plug is disposed between the first housing end and the second housing end. The plug has a substantially fluid-tight, sliding engagement with an inner wall of the housing. The linear actuator is to urge the plug towards the first housing end with a predetermined amount of force.
    Type: Grant
    Filed: June 12, 2009
    Date of Patent: November 13, 2012
    Assignee: AeroControlex Group, Inc.
    Inventors: Larry Murg, Michael Joseph Giacoma
  • Patent number: 8260466
    Abstract: A device for controlling an irrigation system includes an interrupter for interconnection in a serial manner between a solenoid return common line and a preexisting irrigation timer, a controller for operating the interrupter in a periodic fashion is provided as well as an adjuster, in communication with the controller, for changing the periodicity of the interrupter operation.
    Type: Grant
    Filed: May 25, 2010
    Date of Patent: September 4, 2012
    Inventors: Greig E. Altieri, Matthew K. Davenport, Howard J. Jelinek, Jae Y. Kim, Henry M. Ortiz
  • Publication number: 20120085427
    Abstract: An improved outlet valve for a frost-preventing faucet substantially employs an axial slot defined at a central top inside the inlet passage for being inserted by an elastic element and an axial post. A first stop ring is disposed around the stop valve. The first stop ring and the stop valve are inserted into a limiting slot of a hollow stop sleeve disposed under the stop valve. A second stop ring disposed around the stop sleeve is inserted into a lower section of an inner wall of the inlet passage. A bottom of the second stop ring is disposed above a top of the top porcelain. Cooperating the subject improved configuration with the top porcelain allows the water to be supplied upward since outlet gates of the bottom porcelain and the top porcelain stay abreast without a blockage. When a water pressure is larger than a rebounding force of the elastic element, the stop valve upwardly compresses the elastic element.
    Type: Application
    Filed: October 6, 2010
    Publication date: April 12, 2012
    Inventor: Hung-Neng WU
  • Patent number: 8109264
    Abstract: A hot water solar heating system includes a solar collector assembly located outside a building, a hot water tank located inside the building and supply and return pipes connecting the tank to the solar collector assembly. Portions of the supply and return pipes are located outside the building and are subject to below freezing temperatures and ice blockages. The system includes resistance heating wires which melt ice blockages in the exterior portions of the supply and return pipes.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: February 7, 2012
    Inventor: William M. Murray
  • Publication number: 20120006829
    Abstract: An improved refrigerator is provided with a freeze tolerant valve for the water tank assembly in the refrigerator. The valve includes a body with an internal plastic spool which minimizes the volume of water within the valve, and which provides a space in the valve to accommodate freezing water in the valve. The valve will not crack or fail in the event of a temperature control problem in the refrigerator which results in frozen water within the valve.
    Type: Application
    Filed: September 21, 2011
    Publication date: January 12, 2012
    Applicant: WHIRLPOOL CORPORATION
    Inventors: JAMES H. JENKINS, JR., THOMAS C. ANELL
  • Patent number: 7954506
    Abstract: A plumbing system operable to automatically introduce antifreeze into the hot and cold water systems responsive to a signal from a controller. The controller activates the system automatically at a predetermined ambient temperature. The system can also be reconfigured manually.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: June 7, 2011
    Inventor: John David Swan
  • Patent number: 7891370
    Abstract: 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 freeze member is configured to allow unfrozen water to pass through the chamber and to accommodate expansion of the water during freezing to prevent cracking or other damage to the peripheral wall.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: February 22, 2011
    Assignee: Hunter Industries, Inc.
    Inventor: Richard C. Stange
  • Publication number: 20100313966
    Abstract: A freeze resistant manifold includes a plurality of conduits, junction, and expansion device. Each conduit of the plurality of conduits includes a respective first end in fluid communication with a respective second end. The junction is defined by each of the respective first ends of the plurality of conduits in direct fluid communication with a remainder of the first ends of the plurality of conduits. The expansion device includes a housing, plug, and linear actuator. The housing has a first housing end and a second housing end. The first housing end is in fluid communication with the junction. The plug is disposed between the first housing end and the second housing end. The plug has a substantially fluid-tight, sliding engagement with an inner wall of the housing. The linear actuator is to urge the plug towards the first housing end with a predetermined amount of force.
    Type: Application
    Filed: June 12, 2009
    Publication date: December 16, 2010
    Applicant: AeroControlex Group,Inc.
    Inventors: Larry Murg, Michael Joseph Giacoma
  • Patent number: 7823407
    Abstract: A water filter capable of preventing breakdown thereof due to freezing and a refrigerator having the same. The water filter includes a filter housing having entrance and exit ports to allow water to flow into and out of the filter housing, respectively, a filter member housed in the filter housing, and an expansion compensation part provided in the filter housing to compensate for expansion due to freezing of water.
    Type: Grant
    Filed: August 8, 2007
    Date of Patent: November 2, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seung Tae Lim, Jung Rae Kim
  • Patent number: 7686028
    Abstract: 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-receiving valve seat and a plurality of butterfly outlet control valves, wherein bottom of water-controlling shaft bolt has a protruding tongue embedding into top of bottom butterfly porcelain shard in order to adjust outlets of top and bottom porcelain shard; its features are as follows: an inlet channel extending to middle section of shaft bolt is made at middle section of bottom of water-controlling shaft bolt, horizontal through outlet channel is made at two sides of inlet channel.
    Type: Grant
    Filed: November 17, 2006
    Date of Patent: March 30, 2010
    Inventor: Hung-Neng Wu
  • Publication number: 20100032023
    Abstract: A valve freeze control apparatus for an internal combustion engine includes a concentration sensor, a valve, a freeze control device, and a start determination unit. The concentration sensor is adapted to detect an alcohol concentration of fuel supplied to the internal combustion engine. The valve is provided in one of an intake passage and an exhaust passage of the internal combustion engine, wherein the valve controls flow of air that passes through the one of the intake and exhaust passages. The freeze control device is adapted to limit malfunction of the valve caused by freeze of water in exhaust gas, and the water has been attached to the valve. The start determination unit determines to start the freeze control device when the alcohol concentration detected by the concentration sensor is equal to or greater than a reference value.
    Type: Application
    Filed: August 6, 2009
    Publication date: February 11, 2010
    Applicant: DENSO CORPORATION
    Inventor: Takeshi FUJIMOTO
  • Publication number: 20090272440
    Abstract: Freeze protection of an on-board emissions treatment substance storage and distribution system in a vehicle includes moving the emissions treatment substance away from a primary fuel/vapor area after filling of the emissions treatment system. In one embodiment an on-board emissions treatment system has a fill tube with a portion extending into a primary fuel fill tube to facilitate co-fueling of the primary fuel and emissions treatment substance. A pressure differential or vacuum is created in the emissions treatment fill tube after filling to move the emissions treatment substance away from a check valve disposed at the terminal end of the fill tube to prevent freezing of the check valve after filling. The emissions treatment substance may be moved out of the co-located portion of the fill tube to an area where passive or active heating of the fill tube may be applied to further reduce susceptibility to freezing.
    Type: Application
    Filed: July 14, 2009
    Publication date: November 5, 2009
    Applicant: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: Michael Levin
  • Patent number: 7497228
    Abstract: 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 water in the inlet conduit downwardly towards a drain; and a control valve for controlling the flow of pressurized water in the inlet conduit. The water flushing system further includes one or more of the following features: a freeze protection assembly, a detachable coupling system, a dechlorination system, and a backflow prevention system.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: March 3, 2009
    Inventors: Thomas M. Taylor, David Goslin
  • Publication number: 20080115835
    Abstract: 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-receiving valve seat and a group of butterfly outlet control valves, wherein bottom of water-controlling shaft bolt has a protruding tongue embedding into top of bottom butterfly porcelain shard in order to adjust outlets of top and bottom porcelain shard; its features are as follows: an inlet channel extending to middle section of shaft bolt is made at middle section of bottom of water-controlling shaft bolt, horizontal through outlet channel is made at two sides of inlet channel.
    Type: Application
    Filed: November 17, 2006
    Publication date: May 22, 2008
    Inventor: Hung-Neng Wu
  • Patent number: 7267898
    Abstract: 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 prevent freezing of the water in the water circulation passage (5). Electrodes (11, 12) are disposed in the water. When the fuel cell stack (4) is running, a voltage is applied between the electrodes (11, 12) such that the positive electrode (11) attracts sodium ions, thereby removing sodium ions from the cooling water supplied to the fuel cell stack (4). When the fuel cell stack (4) stops running, sodium ions which were attracted to the positive electrode (11) are made to diffuse into the cooling water by ceasing to apply the voltage to the electrodes (11, 12).
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: September 11, 2007
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Shinichi Takahashi
  • Patent number: 7093608
    Abstract: 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 water in the inlet conduit downwardly towards a drain; and a control valve for controlling the flow of pressurized water in the inlet conduit. The water flushing system further includes one or more of the following features: a freeze protection assembly, a detachable coupling system, a dechlorination system, and a backflow prevention system.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: August 22, 2006
    Inventor: Thomas M. Taylor
  • Patent number: 6981848
    Abstract: 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 the control valve, and an electric motor responsive to the controller for rotating a cam on the motor shaft to open and close the control valve. The injected fluid may be methanol, so that the system automatically injects methanol into a pipeline which transmits natural gas. In one embodiment, the system includes a temperature sensor and a flow sensor for inputting signals to the controller.
    Type: Grant
    Filed: February 29, 1996
    Date of Patent: January 3, 2006
    Assignee: PGI International, Ltd.
    Inventor: Kevin J. Cessac
  • Patent number: 6892746
    Abstract: 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 supply is shut-off in conformity with a determination that the household is unoccupied and thereby provides automatic protection from water damage.
    Type: Grant
    Filed: December 23, 2003
    Date of Patent: May 17, 2005
    Inventor: Michael Brent Ford
  • Patent number: 6886580
    Abstract: 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 safety port the valve assembly characterised in that has a safety port associated with the secondary chamber wherein the safety port is configured to have a lower flow-rate than that through the equalisation port.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: May 3, 2005
    Inventors: David Jobe, Robin Jobe
  • Patent number: 6830062
    Abstract: 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 an upper portion that defines a seat within the female member. A flow controller sits on the seat. A filter screen upstream the flow controller collects particles in water flowing therethrough so that the controller does not become clogged. The flow controller includes a housing that is provided with an upper inlet for receiving a first flow rate of water from a water spigot. The housing also includes a cavity therewithin and the cavity is in fluid contact with the upper inlet. A flexible membrane is housed within the cavity and floats when water enters the cavity via the upper inlet. The upper inlet is slotted at the top thereof for further filtering water flowing therethrough.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: December 14, 2004
    Inventor: John R. Montpetit
  • Patent number: 6830063
    Abstract: 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 an adjusting element with an outlet port that is associated with the valve and fitting assembly to open or close the tube to fluid flow and allow for fluid flow out of the tube when the valve is in the open position. The tube is comprised of a flexible material that enlarges in diameter in an area along its length when it is subjected to trapped fluid therein under high pressure so that the tube will not rupture. The tube returns to its normal diameter after the high fluid pressure therein is abated.
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: December 14, 2004
    Assignee: WCM Industries, Inc.
    Inventor: William T. Ball
  • Publication number: 20040238028
    Abstract: 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 water in the inlet conduit downwardly towards a drain; and a control valve for controlling the flow of pressurized water in the inlet conduit. The water flushing system further includes one or more of the following features: a freeze protection assembly, a detachable coupling system, a dechlorination system, and a backflow prevention system.
    Type: Application
    Filed: May 28, 2004
    Publication date: December 2, 2004
    Inventors: Thomas M. Taylor, David Goslin
  • Patent number: 6805154
    Abstract: 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 spring loaded piston element to permit the highly pressurized water to move through the bore in the valve body and be relieved as it escapes rearwardly into the original source of pressurized water.
    Type: Grant
    Filed: December 5, 2003
    Date of Patent: October 19, 2004
    Assignee: WCM Industries, Inc.
    Inventors: Alfred F. Dickey, Cody W. Jackson, William T. Ball
  • Patent number: 6782908
    Abstract: 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 also includes a temperature sensor for measuring a critical temperature corresponding to approximately a freezing temperature of the freezable washer liquid, a drain plug sealingly communicating with the drain port, and an electrical control unit in operative communication with the temperature sensor and the drain plug. The electrical control unit controls the drain plug to drain the liquid from the first reservoir in response to the critical temperature.
    Type: Grant
    Filed: September 24, 2002
    Date of Patent: August 31, 2004
    Assignee: Ford Global Technologies, LLC
    Inventors: Ellen Cheng-chi Lee, Kevin Richard John Ellwood, Scott Alan Wojan
  • Patent number: 6769446
    Abstract: 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 an interior end of the valve fitting. An elongated hollow tube of a diameter less than the interior diameter of the inlet tube is positioned on the center line of the inlet tube and has inner and outer ends. A plug is rigidly secured to the inner end of the tube to close the inner end for fluid flow. A normally closed check valve is movably mounted in the tube to engage a valve seat on the plug, to open the tube for fluid therein under conditions of high fluid pressure in the inlet tube.
    Type: Grant
    Filed: August 14, 2003
    Date of Patent: August 3, 2004
    Assignee: WCM Industries, Inc.
    Inventors: William T. Ball, Cody W. Jackson, Lawrence Almasy
  • Patent number: 6722386
    Abstract: 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 air or water is at or near the freezing temperature of water (32° F.). When the temperature of the air or water rises above freezing, the thermostat causes the valve to close, thereby preventing water from flowing through the valve. Therefore, when the apparatus is coupled to an end of a water conduit, such as a water spigot or hose, water is allowed to flow through the conduit when the air or water temperature is at or near freezing to prevent the conduit from bursting due to water freezing and expanding within the conduit.
    Type: Grant
    Filed: June 10, 2003
    Date of Patent: April 20, 2004
    Inventor: Bruce Harvey
  • Publication number: 20040060594
    Abstract: 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 an upper portion that defines a seat within the female member. A flow controller sits on the seat. A filter screen upstream the flow controller collects particles in water flowing therethrough so that the controller does not become clogged. The flow controller includes a housing that is provided with an upper inlet for receiving a first flow rate of water from a water spigot. The housing also includes a cavity therewithin and the cavity is in fluid contact with the upper inlet. A flexible membrane is housed within the cavity and floats when water enters the cavity via the upper inlet. The upper inlet is slotted at the top thereof for further filtering water flowing therethrough.
    Type: Application
    Filed: September 30, 2002
    Publication date: April 1, 2004
    Inventor: John R. Montpetit
  • Patent number: 6691724
    Abstract: 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 household is unoccupied and thereby provides automatic protection from water damage.
    Type: Grant
    Filed: April 11, 2002
    Date of Patent: February 17, 2004
    Inventor: Michael Brent Ford
  • Patent number: 6622930
    Abstract: 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 predetermined temperature close to freezing.
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: September 23, 2003
    Inventors: Karsten Andreas Laing, Johannes Nikolaus Laing
  • Patent number: 6536458
    Abstract: 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 the tap. The invention also relates to a valve device in which a heating means can be plugged into a corresponding socket (11), thereby effectively preventing the tap from freezing.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: March 25, 2003
    Inventor: Peter Kindermann
  • Patent number: 6532986
    Abstract: 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 spring loaded piston element to permit the highly pressurized water to move through the bore in the valve body and be relieved as it escapes rearwardly into the original source of pressurized water.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: March 18, 2003
    Assignee: WCM Industries, Inc.
    Inventors: Alfred F. Dickey, Cody W. Jackson, William T. Ball