Burner Gas Cutoff Patents (Class 137/78.4)
  • Patent number: 8944088
    Abstract: A safety valve for interrupting the flow of fuel through a fuel line includes a housing member and a safety valve insert, wherein the housing member houses a portion of the safety valve insert and the valve insert includes a connection end for connecting to a grounding surface to draw electrical current through the safety valve insert, a fusible link, which is broken by electrical current, and a plunger, which is released when the fusible link is broken and interrupts the flow of fuel through a fuel line.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: February 3, 2015
    Inventor: Richard T. Gilmer
  • Patent number: 8925568
    Abstract: Embodiments of the invention are directed to systems and methods for automating the operation of a solenoid valve to prevent overheating of solenoid elements. The solenoid valve controls the flow of a fluid, such as gas, and may be automatically interrupted, or shut-off, of power upon the occurrence of fluctuating currents or other events. Once the problem has been removed or repaired, the flow of fluid through the solenoid valve may resume.
    Type: Grant
    Filed: June 18, 2012
    Date of Patent: January 6, 2015
    Inventors: Ferdinand Villegas Legaspi, Perfecto Ferrer Gallardo, Jr., Fernando Medina Bernardo
  • Patent number: 8836522
    Abstract: A safety shut-off system and method for eliminating power to a load in the event of smoke detection. The system may comprise a device located at the appliance for detecting a signal from a smoke detector, and cutting power to the appliance only when the appliance is in use. The device may be synchronized with any standard smoke alarm signal to reduce the number of false positive shut-offs. The system may also comprise a smoke alarm hard-wired to a circuit breaker, for shutting off power to all appliances on a particular breaker upon receipt of a signal from the smoke alarm, and only when the appliances on the breaker are in use. The system may also have the ability to shut off one breaker, multiple breakers, or all breakers at different time increments to actively prevent and reduce the damages caused by fires.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: September 16, 2014
    Assignee: Fire Avert, LLC
    Inventors: Peter Thorpe, Michael Sanders, Chase Roberts, Kevin Sanders, Zack Bomsta
  • Patent number: 8807523
    Abstract: A low-cost safety valve for gas lines and similar supply lines that can be remotely activated via a secure wireless link employing a low leakage sealing mechanism that is compatible with low energy actuators to for extended battery life. A miniaturized controller and wireless electronics assembly provides the control mechanism for actuating the valve, as well as reporting data regarding the valve status to wireless interrogators or external networks via an ad hoc wireless network. A variety of simple magnetic valve operating mechanisms can be implemented with the miniaturized electronic control circuits and the valve body. Such control actuation mechanisms enable automatic resetting or manual resetting valves. The gas line shut off valve can provide important safety benefits at an affordable price.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: August 19, 2014
    Assignee: Gas Sentinel, LLC
    Inventors: Barth R. Pitchford, John H. Pitchford, William D. Pitchford, Donald S. Pitchford, Steven Nagel, Benedict J. Nardi, Russell S. Smith, Robert Simon
  • Patent number: 8567757
    Abstract: A low-cost safety valve for gas lines and similar supply lines that can be remotely activated via a secure wireless link employing a low leakage sealing mechanism that is compatible with low energy actuators to for extended battery life. A miniaturized controller and wireless electronics assembly provides the control mechanism for actuating the valve, as well as reporting data regarding the valve status to wireless interrogators or external networks via an ad hoc wireless network. A variety of simple magnetic valve operating mechanisms can be implemented with the miniaturized electronic control circuits and the valve body. Such control actuation mechanisms enable automatic resetting or manual resetting valves. The gas line shut off valve can provide important safety benefits at an affordable price.
    Type: Grant
    Filed: November 19, 2010
    Date of Patent: October 29, 2013
    Inventors: Barth R. Pitchford, John H. Pitchford, William D. Pitchford, Donald S. Pitchford, Steven Nagel, Benedict J. Nardi, Russell S. Smith, Robert Simon
  • Patent number: 8479759
    Abstract: A device for controlling a combustible gas supply to a burner is provided, which includes first and second servovalves, having respective valve seats associated with a corresponding shut-off mechanism, which include respective first and second control solenoid valves with an electromagnetic operating device that controls the opening/closing of the corresponding servovalve. The solenoid valves act to indirectly control the corresponding servovalve's respective shut-off mechanism. The pipes of the control are in communication with the main pipe through an auxiliary bleed pipe. A pilot pipe is branched from the auxiliary pipe to supply a pilot burner, and a thermoelectric magnetic unit with a knob is provided on the auxiliary pipe, which allows gas to flow towards the pilot burner when the unit is activated, while simultaneously shutting off the flow of gas towards the servovalve control circuit. The device includes a control mechanism, controlled by the knob, which controls gas flow.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: July 9, 2013
    Assignee: Sit La Precisa S.p.A. Con Socio Unico
    Inventors: Michele Benvenuto, Salvatore Pappalardo, Gianpiero Turrin
  • Publication number: 20130014830
    Abstract: A method and apparatus for detecting and preventing electrically induced fires in a gas tubing systems constructed of Corrugated Stainless Steel Tubing (CSST) and Gas Appliance Connectors (GAC). The system of the present invention may include one or more energy detection schemes to detect electrical energy surges on the gas line. When such a surge is detected, the control circuitry of the present invention causes an electric two-way main gas valve to de-energize into a position wherein the flow of gas from a gas feeder pipe to the gas tubing system is blocked and residual gas pressure in the gas tubing system is automatically vented to the atmosphere.
    Type: Application
    Filed: August 28, 2012
    Publication date: January 17, 2013
    Inventor: Mark E. Goodson
  • Publication number: 20120325197
    Abstract: A system and method for automatically rotating a control knob unit on an appliance or other device to an Off position upon the occurrence of a safety event is provided. The control knob unit may be secured to and engaged with an operational shaft on the appliance which controls the flow of gas or power to the appliance. The system may include one or more detectors (or detector modules) that are configured to emit a signal upon an occurrence of the event, such as a fire, which may be an early indication of a developing emergency. The signal may be in the form of an audible alert, such as sound (or sound waves). A data transceiver processing module may receive a plurality of sound waves and analyze the plurality of sound waves for a variation in frequency (or Doppler Effect) to determine if any of the sound waves originate from the one or more detector modules.
    Type: Application
    Filed: June 27, 2012
    Publication date: December 27, 2012
    Inventors: Ferdinand Villegas Legaspi, Perfecto Ferrer Gallardo, JR., Fernando Medina Bernardo
  • Patent number: 8282134
    Abstract: An apparatus and method of assembling a thermally responsive fluid coupling of a pressure reducing fuel regulator is provided. The fuel regulator includes an inlet conduit having a longitudinally extending ridge. A generally annular bushing is positioned over the inlet conduit. The bushing includes a plurality of circumferentially spaced figures and a cutout dimensioned to receive the ridge of the inlet conduit. A fluid-carrying member is positioned at least partially within the inlet conduit. A collar is positioned over the inlet conduit. The collar includes a first end adapted to be releasably connected to a cooperative fluid coupling and a second end. The second end of the collar is secured between the plurality of fingers of the bushing and the inlet conduit for preventing axial movement between the collar and the fluid-carrying member.
    Type: Grant
    Filed: May 15, 2009
    Date of Patent: October 9, 2012
    Assignee: Cavagna Group
    Inventor: Savio Cavagna
  • Patent number: 8251085
    Abstract: The present invention provides failsafe system for cutting gas off gas flow in response to electrical insults that may damage gas tubing. The invention uses an inductive sensor to detect electrical surges along a ground conductor that provides a ground path for gas tubing. The sensor is coupled to control circuitry that provides a continuous pulse train to a solenoid that forms part of a valve that controls gas flow through the gas tubing. The pulse train from the control circuitry keeps the valve open. In response to an electrical surge detected along the ground conductor (e.g., from lightning), the control circuitry stops the pulse train to the solenoid, which in turn causes the gas valve to close and stop the gas flow through the tubing.
    Type: Grant
    Filed: August 3, 2009
    Date of Patent: August 28, 2012
    Inventor: Mark E. Goodson
  • Patent number: 7817048
    Abstract: A fire extinguishing system for suppressing fires on cook stoves, fryers or other heating or heated devices with fire suppressant dispensed through nozzles is powered by batteries which provide current for both a detection circuit including a pair of heat sensors and control circuitry and current for a gas or electric house current shut-off. The appliance shut-off device is operated by the standard hardwired interconnect cable that provides a signal between the control board and shutoff device or by an optional sonic receiver assembly that is acoustically tuned to detect an audible alarm emitted by a signal from the main control board. Preferably, the heat sensors are diodes, but in alternative embodiments may be thermistors or active temperature sensors. Mounting of heat sensors and nozzles are facilitated by tees and 90 degree elbows.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: October 19, 2010
    Assignee: Guardian Patent, LLC
    Inventors: J. Paul Rouse, Charles Schaefer
  • Patent number: 7199721
    Abstract: The Alarm Shut Off System is an invention that will detect when there is smoke and shut off the supply of gas or electric power from the appliance to prevent the smoke from growing into a fire. This invention will save lives and property.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: April 3, 2007
    Inventor: Harold Shirlee
  • Patent number: 6543743
    Abstract: A gas control valve includes a first element, a second element, a mediate element, a sleeve, a rod and a control element. The first element defines a first path. The second element defines a second path and a hole in communication with the second path. The mediate clement defines a passage. The mediate clement is sandwiched between the first and second elements so that the first path is in communication with the second path through the passage. The sleeve includes a first end and a second end. The first end of the sleeve is inserted into the hole. The rod includes a first and a second end. The rod is inserted into the sleeve so that the first end of the rod is inserted into the second path and that the second end of the rod is exposed through the second end of the sleeve. The control element is connected between the second end of the sleeve and the second end of rod. Normally, the control element keeps the rod in a first position wherein the first end of the rod opens the passage.
    Type: Grant
    Filed: July 12, 2001
    Date of Patent: April 8, 2003
    Inventor: Arlo H. T. Lin
  • Patent number: 6269829
    Abstract: An adapter to convert a traditional gas meter into a computerized gas meter is disclosed. The adapter of this invention comprises a microcomputer gas flow signal converting module, a gas flow monitoring module, a gas pressure monitoring module, an earthquake sensing module and a gas supply shutoff mechanism, and a casing to enclose the modules and to affixed to said traditional gas meter. The microcomputer gas flow rate signal converting module senses the movement of diaphragm of the traditional gas meter and converts the gas flow rate into computerized signals. The gas flow monitoring module and the gas pressure monitoring module monitor the gas flow rate and the gas pressure, and generate warning signals when abnormal phenomena are sensed. The earthquake sensing module senses strong earthquakes according to vertical vibration waves and horizontal vibration waves of said earthquake.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: August 7, 2001
    Assignee: Industrial Technology Research Institute
    Inventors: Chien-An Chen, Tzong-Sheng Lee, Ching-Yi Wu
  • Patent number: 6199573
    Abstract: A device and method for shutting off the flow of gas to a structure, such as a residence, when a fire is detected in the structure. The device has a fire detector for providing a status signal to indicate the presence of fire in a structure, an actuator in communication with the fire detector, and a shut-off valve located on a gas line and connected to the actuator. When the status signal is received by the actuator, the actuator causes the valve to close, thereby shutting off the flow of gas to the structure. The device also includes one or more of the following: a secondary electric power source, disturbance prevention circuitry, a shut-off valve position indicator, a manually operated means of closing the shut-off valve, and an alarm indicator for indicating the presence of fire in the structure. The method involves detecting a fire and providing a status signal to an actuator. Then the actuator moves the shut-off valve from an open position to a closed position.
    Type: Grant
    Filed: May 20, 1999
    Date of Patent: March 13, 2001
    Assignee: Craft-Weld Enterprises, Inc.
    Inventor: Ronald Paskiewicz
  • Patent number: 6170509
    Abstract: A safety device for shutting off a gas valve at the detection of a gas leak has an add-on adaptor device having a first knob mounted over an existing gas knob and affixed thereto; a spindle coupled to the first knob, capable of rotating the fist knob, and the gas valve knob, between an open position and a closed position. A second knob is rotatably mounted substantially perpendicular to the spindle, and is provided with firm cantilever which is extended to provide a firm support along side the gas valve knob so as to cause rotation of the gas valve knob when the second knob is rotated in one direction. A spinning is attached to the second knob and is in a wound state when the second knob is parallel to the first knob when the first knob is in the open position, and in an unwound state when the first knob is in the closed position.
    Type: Grant
    Filed: October 19, 1999
    Date of Patent: January 9, 2001
    Assignee: Century Investments Limited
    Inventor: Yossi Karta