Wilfred D Pascual

US Patent:

6357723, Mar 19, 2002

Filed:

Jun 15, 1999

Appl. No.:

09/333638

Inventors:

Dennis E. Kennedy - Fontana CA
Wilfred D. Pascual - Baldwin Park CA

Assignee:

Wilden Pump Engineering Co. - Grand Terrace CA

International Classification:

F16K 100

US Classification:

251322, 251 77, 251337, 137903

Abstract:

An air driven diaphragm pump having two, opposed pumping cavities. A center section assembly between the pumping cavities includes a cylinder and a power amplifier piston. The power amplifier piston as well as the diaphragms are coupled with a common control shaft. A valve assembly is arranged with a manifold to receive pressurized air and distribute that air in alternating fashion to the sides of the power amplifier piston as well as to each of the diaphragms. By directing pressure to a side of the power amplifier piston facing the same direction as the diaphragm receiving pressure, an amplified pressure on a pump chamber is experienced. With the power amplifier piston being approximately twice as large as the diaphragm assembly, an amplification of three times the pressure on the pump chamber is experienced. Both pump chambers are able to operate to pump material. A relief valve includes an actuator and a valve element which cooperate through a compression spring and stops to provide a force profile for valve actuation and energy for positive actuation.

US Patent:

59279540, Jul 27, 1999

Filed:

Apr 23, 1997

Appl. No.:

8/842377

Inventors:

Dennis E. Kennedy - Fontana CA
Wilfred D. Pascual - Baldwin Park CA

Assignee:

Wilden Pump & Engineering Co. - Grand Terrace CA

International Classification:

F04B 1700

US Classification:

417397

Abstract:

An air driven diaphragm pump having two, opposed pumping cavities. A center section assembly between the pumping cavities includes a cylinder and a power amplifier piston. The power amplifier piston as well as the diaphragms are coupled with a common control shaft. A valve assembly is arranged with a manifold to receive pressurized air and distribute that air in alternating fashion to the sides of the power amplifier piston as well as to each of the diaphragms. By directing pressure to a side of the power amplifier piston facing the same direction as the diaphragm receiving pressure, an amplified pressure on a pump chamber is experienced. With the power amplifier piston being approximately twice as large as the diaphragm assembly, an amplification of three times the is pressure on the pump chamber is experienced. Both pump chambers are able to operate to pump material. A relief valve includes an actuator and a valve element which cooperate through a compression spring and stops to provide a force profile for valve actuation and energy for positive actuation.

US Patent:

61589829, Dec 12, 2000

Filed:

Jun 15, 1999

Appl. No.:

9/333525

Inventors:

Dennis E. Kennedy - Fontana CA
Wilfred D. Pascual - Baldwin Park CA

Assignee:

Wilden Pump & Engineering Co. - Grand Terrace CA

International Classification:

F04B 1700

US Classification:

417397

Abstract:

An air driven diaphragm pump having two, opposed pumping cavities. A center section assembly between the pumping cavities includes a cylinder and a power amplifier piston. The power amplifier piston as well as the diaphragms are coupled with a common control shaft. A valve assembly is arranged with a manifold to receive pressurized air and distribute that air in alternating fashion to the sides of the power amplifier piston as well as to each of the diaphragms. By directing pressure to a side of the power amplifier piston facing the same direction as the diaphragm receiving pressure, an amplified pressure on a pump chamber is experienced. With the power amplifier piston being approximately twice as large as the diaphragm assembly, an amplification of three times the pressure on the pump chamber is experienced. Both pump chambers are able to operate to pump material. A relief valve includes an actuator and a valve element which cooperate through a compression spring and stops to provide a force profile for valve actuation and energy for positive actuation.

US Patent:

56116780, Mar 18, 1997

Filed:

Apr 20, 1995

Appl. No.:

8/425650

Inventors:

Wilfred D. Pascual - Baldwin Park CA

Assignee:

Wilden Pump & Engineering Co. - Colton CA

International Classification:

F04B 1700
F04B 5300

US Classification:

417393

Abstract:

An air driven diaphragm pump having two diaphragms joined by a common control shaft to reciprocate in opposed chambers for pumping material through check valve ported cavities. An actuator valve is associated with the central housing of the pump and includes a valve cylinder within which a valve piston reciprocates. The valve piston is caused to reciprocate by alternate venting of the ends of the cylinder. Air chamber passages are controlled by the control shaft to vent the ends of the valve cylinder. A cylindrical portion of the control shaft includes axial slots for venting alternate ends of the valve piston. Annular channels manifold air to and from the axial slots. Seals of elastomeric annular rings and PTFE cylindrical inner liners bonded to the annular rings are arranged in certain of the annular channels, the sidewall of one of which is relieved outwardly for increased venting air flow.

US Patent:

57431701, Apr 28, 1998

Filed:

Mar 27, 1996

Appl. No.:

8/622943

Inventors:

Wilfred D. Pascual - Baldwin Park CA
Eric L. Forman - Rancho Cucamonga CA

Assignee:

Wilden Pump & Engineering Co. - Grand Terrace CA

International Classification:

F01B 1900

US Classification:

92103F

Abstract:

A flexible diaphragm for an air driven diaphragm pump having a circular configuration with an inner attachment portion, an outer attachment portion and an annular flexure portion bounded by transition portions to the inner and outer attachment portions. The annular flexure portion is configured with a constant radius of curvature concave on the air chamber side. The curvature is such that the center of curvature lies substantially within a plane also including the transition portion between the annular flexure portion and the inner attachment portion. The diaphragm is molded in this shape to avoid the creation of internal stress and permanent strain resulting from use of the diaphragm. Fabric is positioned across the diaphragm closest to the air chamber side and being about one-third of the total thickness of the diaphragm from the air chamber side of the diaphragm.

Address:

863 S Mtn Ave, Ontario, CA 91762

VIN:

2FMDK38C97BB41763

Make:

FORD

Model:

EDGE

Year:

2007