Grover W Preston

6382183, May 7, 2002

Nov 9, 2000

09/710523

Grover Wesley Preston - Livonia NY
Steven J Fogarassy - Webster NY

Delphi Technologies, Inc. - Troy MI

F02M 4100

123457, 92103 M, 2513352

A fuel pressure regulator includes three major components, a lower housing, a control member comprising an resilient diaphragm mounted on the housing and a tubular return member mounted in a fuel return opening of the housing. The control member is preferably formed of resilient sheet metal and includes at least one annular convolution between the mounting portion and a stiff center portion configured as an inverted dome with a lower center part that acts as a valve member. The control member acts as a cover closing the internal fuel chamber and responds as a diaphragm to changes in pressure within the fuel chamber to flex upwardly by a rolling action of the convolution, which lifts the domed central portion, opening the valve and allowing excess fuel to drain through the return member. The regulated pressure is set by adjusting via sliding or threading the return member upwardly, forcing the valve seat against the valve member portion of the control member diaphragm so that the spring force of the diaphragm is preloaded to a desired value.

6802340, Oct 12, 2004

Jun 26, 2003

10/606906

Thomas J. Gutmann - Rochester NY
Ahmet T. Becene - Henrietta NY
Charles W. Braun - Livonia NY
Grover W. Preston - Livonia NY

Delphi Technologies, Inc. - Troy MI

F02M 4100

137510, 123457, 123511

A fuel pressure regulator including a valve head having a centerline offset from the centerline of a corresponding fuel orifice. The valve head may be offset with respect to the valve seat and orifice, the orifice may be offset within the seat with respect to the head and diaphragm assembly, or the axes of the head and seat may be non-coaxially biased. Because the vector of the valve closing force does not align with the centerline of the valve head and diaphragm assembly, a resulting torque on the valve head keeps the head in a stable, pivoted position at all flow rates. The valve head always makes contact with the valve seat at a predetermined point during regulator operation, eliminating pressure instabilities and noise experienced in prior art pressure regulators.

6895996, May 24, 2005

Sep 28, 2004

10/952295

Thomas J. Gutmann - Rochester NY, US
Ahmet T. Becene - Henrietta NY, US
Charles W. Braun - Livonia NY, US
Grover W. Preston - Livonia NY, US

Delphi Technologies, Inc. - Troy MI

F02M041/00

137510, 123457, 251 86

A fuel pressure regulator including a valve head having a centerline offset from the centerline of a corresponding fuel orifice. The valve head may be offset with respect to the valve seat and orifice, the orifice may be offset within the seat with respect to the head and diaphragm assembly, or the axes of the head and seat may be non-coaxially biased. Because the vector of the valve closing force does not align with the centerline of the valve head and diaphragm assembly, a resulting torque on the valve head keeps the head in a stable, pivoted position at all flow rates. The valve head always makes contact with the valve seat at a predetermined point during regulator operation, eliminating pressure instabilities and noise experienced in prior art pressure regulators.

7228849, Jun 12, 2007

Sep 29, 2006

11/540463

Grover W. Preston - Rochester NY, US

Delphi Technologies, Inc. - Troy MI

F02M 37/00
F02M 37/08

123511, 123457, 123459

A pressure relief valve useful in vehicle fuel delivery systems includes a spring biased, concave conical flow directing surface and a spherical valve seat.

50708457, Dec 10, 1991

May 22, 1989

7/355224

Anatol Avdenko - Rochester NY
Richard L. Cooper - Leroy NY
Gary J. DeAngelis - Spencerport NY
Kurt T. Hertzog - Henrietta NY
Grover W. Preston - Rochester NY
Edwin A. Rivera - Fairport NY
Jeffrey A. Rock - Rochester NY
Roland S. Taylor - Fairport NY
Robert A. Zaso - Rochester NY

General Motors Corporation - Detroit MI

F02M 5502

123470

A fuel injection nozzle has a tubular body adapted to receive fuel, a tubular seat member mounted to the body, the seat member having an opening for discharging fuel and a valve seat surrounding the opening, a poppet valve member engageable with the valve seat to interrupt fuel flow through the opening, and an extension spring anchored to the body and to the valve member and biasing the valve member to engage the valve seat. The extension spring is a helically coiled spring with each coil lying close to the adjacent coils and with the coils at one end overlying an end of the body to anchor the spring to the body and to cause fuel flowing through the nozzle to pass between the coils of the spring; the spring thereby acts as a filter for fuel to be discharged by the nozzle. The seat member is axially movable relative to the body to adjust the length of the spring and thus the bias on the valve member whereby the desired valve-opening pressure differential may be established. The body is adapted to receive fuel through a restriction member that limits fuel flow through the opening.

61487988, Nov 21, 2000

Oct 1, 1999

9/411338

Charles Wilson Braun - Livonia NY
Curtis David Lamb - Scottsville NY
Michael Roland Brosseau - Rochester NY
Grover Wesley Preston - Livonia NY

Delphi Technologies, Inc. - Troy MI

F02M 4100

123467

A fuel rail has a high pressure inlet and a low pressure outlet. The high pressure inlet feeds pressurized fuel to a plurality of injectors along the fuel rail. A fuel return line, which is connected with the low pressure outlet, is positioned substantially centrally of and coaxial with the fuel rail. The fuel return line is non-circular in configuration having a width to height ratio greater than one. The configuration of the return fuel line and the flexibility of the walls thereof provide a damper that reduces the pressure pulsations in the high pressure fuel.