Patents by Inventor Nicholas J. Bovis

Nicholas J. Bovis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Gas actuated valve system
    Patent number: 4979528
    Abstract: A gas actuated valve system includes a gas switch disposed in a primary gas circuit upstream of a gas driven actuator. The switch is movable to an open position when a pilot gas is supplied under pressure to the gas switch through a pilot circuit, and is movable to a closed position when the pilot pressure is released. A seismic valve coupled to the pilot circuit senses seismic activity and releases pilot gas pressure, thus moving the gas switch to the closed position, when seismic activity is detected.
    Type: Grant
    Filed: April 11, 1990
    Date of Patent: December 25, 1990
    Assignees: Andrene Associates, Martin R. Asbra
    Inventors: Martin R. Asbra, Andrew F. Asbra, Nicholas J. Bovis
  • Air actuated valve system with seismic controller
    Patent number: 4920999
    Abstract: An air actuated valve system for shutting off fluid flow in a fluid conduit includes a seismic valve disposed in a seismic air circuit which is coupled to a primary air circuit. The primary air circuit delivers air at a high pressure to an air driven actuator which maintains a shut off valve in a fluid conduit in an open position. The high air pressure flows through an air switch which is operationally open and coupled to the seismic air circuit such that when the seismic valve is closed a pilot air pressure is prevented from flowing to the air switch. In the absence of the pilot air pressure, air pressure is bled from the air switch, causing the air switch to move from an open to a closed position, thus preventing air from flowing to the air actuator.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: May 1, 1990
    Assignees: Andrene Associates, Martin R. Asbra
    Inventors: Martin R. Asbra, Andrew F. Asbra, Nicholas J. Bovis
  • Air actuated valve system with seismic controller
    Patent number: 4852600
    Abstract: An air actuated valve system for shutting off fluid flow in a fluid conduit includes a seismic valve disposed in a seismic air circuit which is coupled to a primary air circuit. The primary air circuit delivers air at a high pressure to an air driven actuator which maintains a shut off valve in a fluid conduit in an open position. The high air pressure flows through an air switch which is operationally open and coupled to the seismic air circuit such that when the seismic valve is closed a pilot air pressure is prevented from flowing to the air switch. In the absence of the pilot air pressure, air pressure is bled from the air switch, causing the air switch to move from an open to a closed position, thus preventing air from flowing to the air actuator.
    Type: Grant
    Filed: October 7, 1988
    Date of Patent: August 1, 1989
    Assignees: Andrene Associates, Martin R. Asbra
    Inventors: Martin R. Asbra, Andrew F. Asbra, Nicholas J. Bovis, Charles W. Greer