David Albin Chu

US Patent:

52940926, Mar 15, 1994

Filed:

Sep 28, 1992

Appl. No.:

7/951908

Inventors:

Richard B. Wade - Laguna Beach CA
David Chu - La Palma CA

Assignee:

Bridge Products - Northbrook IL

International Classification:

F16L 3728

US Classification:

2511496

Abstract:

A quick disconnect coupler includes a seal retaining member movably mounted in a coupler housing. A sealing washer biases the retaining member toward first position, and an annular seal is mounted in the retaining member. This annular seal defines both axial and radial sealing surfaces, and it is configured to transmit sufficient force to the seal retaining member to move the seal retaining member to a rearward position in response to a first, larger diameter plug bearing on the axial sealing surface, and to form a radial seal around a second, smaller diameter plug.

US Patent:

58604472, Jan 19, 1999

Filed:

May 10, 1996

Appl. No.:

8/644357

Inventors:

David Chu - Santa Ana CA

International Classification:

F16K 3112

US Classification:

13750525

Abstract:

An in line fluid pressure regulating and pressure relief device having a regulator body with an axial bore therethrough with an inlet chamber conectable to a source of fluid under pressure and an outlet chamber connect able to a device requiring fluid under substantially constant pressure. A fluid pressure regulator located in the regulator body maintains fluid pressure at the outlet chamber at a constant predetermined level. A bleed piston located in the axial bore between the inlet chamber and to the pressure regulating means loses contact with said pressure regulating piston when the pressurized fluid source is removed from the regulator or drops below a certain level relieving substantially all pressure in said exit chamber and any attached device passively rendering the device inoperable.

US Patent:

51673983, Dec 1, 1992

Filed:

Feb 8, 1991

Appl. No.:

7/652853

Inventors:

Richard B. Wade - Laguna Beach CA
David Chu - La Palma CA

Assignee:

Bridge Products, Inc. - Northbrook IL

International Classification:

F16L 3728

US Classification:

2511496

Abstract:

A quick disconnect coupler includes a seal retaining member movably in a coupler housing. A sealing washer biases the retaining member toward first position, and an annular seal is mounted in the retaining member. This annular seal defines both axial and radial sealing surfaces, and it is configured to transmit sufficient force to the seal retaining member to move the seal retaining member to a rearward position in response to a first, larger diameter plug bearing on the axial sealing surface, and to form a radial seal around a second, smaller diameter plug.