Derek T Dreischarf

US Patent:

6679161, Jan 20, 2004

Filed:

Dec 12, 2001

Appl. No.:

10/015113

Inventors:

Michel J. Vermoesen - Miamisburg OH
Derek T. Dreischarf - Kettering OH

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F15B 2104

US Classification:

91376R

Abstract:

A spacer for separating a brake booster from a wall comprises a support and a boot. The support is disposed between the booster and the wall, and has a breather port. The boot is integral with the support, and has a generally conical shape tapering from the wall toward a push rod of the booster.

US Patent:

6719477, Apr 13, 2004

Filed:

Nov 2, 2001

Appl. No.:

10/003018

Inventors:

Michel J. Vermoesen - Miamisburg OH
Derek T. Dreischarf - Kettering OH

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F16B 900

US Classification:

403199, 403220, 403222, 403243, 403260, 92 78, 92161

Abstract:

A lightweight spacer for mounting a vacuum brake booster on a panel provides integral flexible sealing lips to seal the interfaces between the panel, spacer, and booster. Integral retaining tabs are provided for holding the spacer in place on the booster during shipping and installation of the booster. Tubular inserts within the spacer are retained and cushioned against rattling by a thin web of material extending over the end of the insert.

US Patent:

6758129, Jul 6, 2004

Filed:

Apr 26, 2002

Appl. No.:

10/133801

Inventors:

Derek T. Dreischarf - Kettering OH
Michel J. Vermoesen - Miamisburg OH

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F16J 110

US Classification:

92 84, 91376 K, 60403, 180271

Abstract:

A collapsible push rod for a brake booster in a vehicle is provided, having first and second telescoping members, and retractable locking means for selectively locking the first and second members together against telescoping. During a frontal impact collision, the members telescope into one another to shorten the length of the push rod and compensate for rearward movement of the brake booster and forward movement of the driver. The push rod is operable in the collapsed state. The push rod is also re-settable after the collision, and includes features for returning the push rod to its normal un-telescoped length following the collision, if the push rod is not damaged in the collision. The retractable locking means includes an electrically actuated solenoid for selectively locking and unlocking the first and second members against telescoping, in response to an electrical signal applied to the solenoid.

US Patent:

6912946, Jul 5, 2005

Filed:

May 28, 2003

Appl. No.:

10/446588

Inventors:

Timothy A. Haerr - Enon OH, US
Gary C. Fulks - Dayton OH, US
Ryan M. Elking - Miamisburg OH, US
Derek T. Dreischarf - Kettering OH, US
Patrick T. MacLellan - Springboro OH, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F15B009/10

US Classification:

91376R

Abstract:

The present invention includes a system for providing an improved controlled airflow within a vacuum booster system. The system includes a vacuum booster assembly having a primary chamber and a secondary chamber, and an outer tube having a first end and a second end, the first end in communication with the secondary chamber of the vacuum booster assembly. The system additionally includes an airflow control assembly operably coupled to the second end of the outer tube, and an inner tube, concentric to the outer tube, having a first end and a second end, the first end operably coupled to the airflow control assembly, the second end in communication with the primary chamber of the vacuum booster assembly. In the system, air flows from the primary chamber of the vacuum booster assembly to the airflow control assembly within the inner tube and air flows from the airflow control assembly to the secondary chamber of the vacuum booster assembly within the outer tube.

US Patent:

6920818, Jul 26, 2005

Filed:

Apr 8, 2003

Appl. No.:

10/409327

Inventors:

Michel J. Vermoesen - Miamisburg OH, US
Ryan M. Elking - Miamisburg OH, US
Patrick T. MacLellan - Springboro OH, US
Derek T. Dreischarf - Kettering OH, US

Assignee:

Delphi Technologies, Inc. - Troy MI

International Classification:

F15B009/10

US Classification:

91376R

Abstract:

A vehicle braking system vacuum booster tandem power piston connection design such that the primary piston and the secondary piston are positioned together forming the tandem power piston. A connection design that provides direct alignment between the primary piston and secondary piston upon assembly and also provides an airtight seal between the primary piston and the secondary piston when assembling the tandem power piston.

US Patent:

20030066416, Apr 10, 2003

Filed:

Oct 9, 2001

Appl. No.:

09/974612

Inventors:

Derek Dreischarf - Kettering OH, US
Michael Fanelli - Centerville OH, US

Assignee:

Delphi Technologies, Inc.

International Classification:

F15B009/10

US Classification:

091/369300

Abstract:

A pneumatic brake booster includes a generally cylindrical shaped piston. The piston has a first piston end and a second piston end and defines a chamber at the first piston end and a piston bore at the second piston end separated by an air flow aperture. The piston bore includes a plunger aperture located at the second piston end. A plunger includes a first plunger end and a second plunger end and is movable between first and second positions. The second plunger end is located within the plunger aperture. An air valve has a first valve end and a valve second end and is movable between first and second positions and defines a valve bore for receiving the first plunger end. A collapsing spring is located within the valve bore and is adapted to couple the plunger and the air valve. The plunger and air valve are spaced apart a first relative distance in response to the pneumatic brake booster being in a regular apply mode and spaced apart a second relative distance in response to the pneumatic brake booster being in a panic apply mode.

US Patent:

20030209139, Nov 13, 2003

Filed:

May 7, 2002

Appl. No.:

10/140453

Inventors:

Michel J. Vermoesen - Miamisburg OH, US
Derek Dreischarf - Hamilton OH, US
John A. Guernsey - Kettering OH, US

Assignee:

DELPHI TECHNOLOGIES INC.

International Classification:

F01B021/02

US Classification:

092/064000

Abstract:

A tandem vacuum booster includes an internal air passage connection between primary and secondary high pressure chambers of the booster, and extending through a primary low pressure chamber of the booster. The internal air passage connection includes a tubular collar extending longitudinally from a divider separating the secondary high pressure and primary low pressure chambers, and an extensible air tube extending through and from a primary diaphragm of the booster, with the primary diaphragm defining the boundary between the primary high and low pressure chambers. The collar includes an outer surface thereof adapted for receiving a distal end of the extensible air tube extending over a portion of the outer surface of the collar. The distal ends of the collar and the air tube include elements for retaining and/or sealing the distal end of the extensible tube against the outer surface of the collar. The booster also includes a primary diaphragm support disposed for contacting a front surface of the primary diaphragm, and having a hole therein for passage therethrough of the extensible air tube, with the air tube including a locking bead on an outer surface thereof for engaging the primary diaphragm support around the hole, to thereby restrain movement of the extensible air tube relative to the diaphragm support and preclude chafing of the air tube that could occur if the air tube were not retained in the hole of the primary diaphragm support.

US Patent:

20040134295, Jul 15, 2004

Filed:

Jan 13, 2003

Appl. No.:

10/341100

Inventors:

Michel Vermoesen - Miamisburg OH, US
Ryan Elking - Miamisburg OH, US
Patrick MacLellan - Springboro OH, US
Derek Dreischarf - Kettering OH, US
Roger Sexton - Dayton OH, US

Assignee:

DELPHI TECHNOLOGIES INC.

International Classification:

F16J015/50

US Classification:

074/018200

Abstract:

An improved method and apparatus for mounting a brake booster on a panel with an adapter are provided, through the use of a boot having a generally cup-shaped wall defining a flange for sealing a juncture between the brake booster and the adapter, a sealing lip for sealing a juncture between the boot and the adapter, and a hole for passage of the push rod, with the hole having a periphery for sealing the juncture between the boot and the push rod. The boot includes an air intake extending through the wall of the boot between the flange and the sealing lip.