Robert M Jack

US Patent:

6435845, Aug 20, 2002

Filed:

Nov 28, 2000

Appl. No.:

09/728608

Inventors:

Dennis E. Kennedy - Fontana CA
Dennis D. Eberwein - Riverside CA
Robert F. Jack - Riverside CA

Assignee:

Wilden Pump Engineering Co. - Colton CA

International Classification:

F04B 4306

US Classification:

417395, 417394, 137102, 91280, 91264, 91268, 91271

Abstract:

An air driven double diaphragm pump has two opposed pumping cavities with diaphragms extending thereacross. A shaft extends between the diaphragms and through an actuator housing. The housing includes a control valve assembly having a control valve to direct pressurized air to one or the other of the dual pumping cavities and two relief valves which cooperate with the pump shaft position to release air from one end or the other of the control valve for the shifting thereof. Shuttle valve elements are positioned between the control valve and the pumping chambers. The shuttle valve elements are slidably positioned within the valve cavities to move between extreme positions under the pressures within the input and the pumping cavity. In one extreme position, the pumping cavity is in communication with an exhaust having a tapered passage. In the other, the exhaust is cut off and pressurized air is able to pass through a one-way valve in a passageway through the shuttle valve element to charge the pumping chamber.

US Patent:

7125229, Oct 24, 2006

Filed:

May 10, 2004

Appl. No.:

10/842847

Inventors:

Chris Distaso - Fontana CA, US
Greg S. Duncan - Huntington Beach CA, US
Robert F. Jack - Riverside CA, US

Assignee:

Wilden Pump and Engineering LLC - Grand Terrace CA

International Classification:

F04B 43/06

US Classification:

417395, 13762566

Abstract:

A reciprocating air distribution system includes a valve housing, having a cylinder therein. A valve element is slidably mounted within the cylinder. Also provided is an inlet to the cylinder, an exhaust from the cylinder and air distribution passages which are controlled by the valve element to be connected either with the intake or the exhaust. A nonmetallic gasket of thermally insulative material and thickness is between the inlet and air distribution passages on one side and the valve element and exhaust on the other. The buna elastomer has carbon black filer to make the gasket statically dissipative. The nonmetallic gasket provides channels which are part of valve control passages which are associated with a pilot valve. The valve control passages are from the inlet to both ends of the cylinder with at least one passage controlled by the pilot valve. These channels are closed by one of the components between which the gasket is located.

US Patent:

6152705, Nov 28, 2000

Filed:

Jul 15, 1998

Appl. No.:

9/116029

Inventors:

Dennis E. Kennedy - Fontana CA
Dennis D. Eberwein - Riverside CA
Robert F. Jack - Riverside CA

Assignee:

Wilden Pump & Engineering Co. - Colton CA

International Classification:

F04B 4306

US Classification:

417395

Abstract:

An air driven double diaphragm pump has two opposed pumping cavities with diaphragms extending thereacross. A shaft extends between the diaphragms and through an actuator housing. The housing includes a control valve assembly having a control valve to direct pressurized air to one or the other of the dual pumping cavities and two relief valves which cooperate with the pump shaft position to release air from one end or the other of the control valve for the shifting thereof. Shuttle valve elements are positioned between the control valve and the pumping chambers. The shuttle valve elements are slidably positioned within the valve cavities to move between extreme positions under the pressures within the input and the pumping cavity. In one extreme position, the pumping cavity is in communication with an exhaust having a tapered passage. In the other, the exhaust is cut off and pressurized air is able to pass through a one-way valve in a passageway through the shuttle valve element to charge the pumping chamber.