Martin R Asbra

US Patent:

49795287, Dec 25, 1990

Filed:

Apr 11, 1990

Appl. No.:

7/507496

Inventors:

Martin R. Asbra - Hillsborough CA
Andrew F. Asbra - San Mateo CA
Nicholas J. Bovis - Burlingame CA

Assignee:

Andrene Associates - Burlingame CA

International Classification:

F16K 1736

US Classification:

137 38

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.

US Patent:

48526002, Aug 1, 1989

Filed:

Oct 7, 1988

Appl. No.:

7/254872

Inventors:

Martin R. Asbra - Hillsborough CA
Andrew F. Asbra - San Mateo CA
Nicholas J. Bovis - Burlingame CA
Charles W. Greer - San Carlos CA

Assignee:

Andrene Associates - Burlingam CA

International Classification:

F16K 1736

US Classification:

137 38

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.

US Patent:

47459395, May 24, 1988

Filed:

May 7, 1987

Appl. No.:

7/047174

Inventors:

Charles W. Greer - San Carlos CA
Andrew F. Asbra - Rancho Mirage CA
Martin R. Asbra - Hillsborough CA

Assignee:

Andrene Associates - Burlingame CA

International Classification:

F16K 1736

US Classification:

137 38

Abstract:

A shock actuated shut-off valve for fluid flow lines is provided which includes a valve housing having a central chamber in communication with inlet and outlet conduits and with a hollow, outwardly enclosed stowage arm in upward, substantially plumb communication with the central chamber. A valve element having a longitudinal aperture incorporating non-occlusive abutment means is releasably supported in the stowage arm for vibratory displacement to and sealing engagement with the central chamber. An inner closure is sealingly disposed in the stowage arm above the valve element. A tether slidably and sealingly extends through an aperture in the inner closure and extends, in spaced relationship, through the aperture in the releasably supported valve element, with the lower end of the tether incorporating a lift member disposed, in a non-obstructive static position, below the abutment means. Following displacement of the valve element to the central chamber, reset is effected by the sequential application of upward and downward force to the tether whereby the valve element, upon being engaged by the lift member, is lifted upwardly to a stop position and thereafter descends to its releasably supported position with the lift member descending to its static position.

US Patent:

49209990, May 1, 1990

Filed:

Jul 31, 1989

Appl. No.:

7/387579

Inventors:

Martin R. Asbra - Hillsborough CA
Andrew F. Asbra - San Mateo CA
Nicholas J. Bovis - Burlingame CA

Assignee:

Andrene Associates - Burlingame CA

International Classification:

F16K 1736

US Classification:

137 38

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.