Thanh A Ho

US Patent:

7255122, Aug 14, 2007

Filed:

Oct 11, 2005

Appl. No.:

11/247370

Inventors:

Thanh Ho - Brunswick OH, US
Robert J. Herbst - Avon OH, US

Assignee:

Bendix Commercial Vehicle Systems LLC - Elyria OH

International Classification:

F15B 13/04

US Classification:

137102, 13762525, 303 69, 303127

Abstract:

A valve for use in a pneumatic fluid system, such as an air brake system, is disclosed. The valve provides for fast release of pneumatic fluid from the delivery cavity through the exhaust port upon cessation of flow from the pneumatic fluid reservoir through the supply cavity. The valve includes a flow diverter that restricts fluid flow from the delivery cavity to the supply cavity when pneumatic fluid pressure in the supply cavity is less than that in the delivery cavity with minimal restriction of flow from the supply cavity to the delivery cavity when pressure in the supply cavity is greater than in the delivery cavity.

US Patent:

7367636, May 6, 2008

Filed:

Feb 16, 2005

Appl. No.:

11/059717

Inventors:

Thanh Ho - Brunswick OH, US

Assignee:

Bendix Commercial Vehicle Systems, LLC - Elyria OH

International Classification:

F16K 31/06
B60T 8/36

US Classification:

3031192, 25112902

Abstract:

An improved valve for use in a heavy vehicle pneumatic braking and parking system is disclosed. The valve includes a solenoid coil assembly, a valve seat, an armature, and a spring. The solenoid coil includes a pole piece and produces a magnetic field when energized. The valve seat has a valve seat surface and defines a flow passage. The armature has a first end and a second end and includes a spherical shaped elastomeric seal sized to engage the valve seat to block air flow through the flow passage. The spring is engaged around an exterior of the armature and resiliently biases the armature toward the valve seat. When energized, the solenoid coil displaces the armature to an open position away from the valve seat and toward the pole piece to allow air flow through the flow passage.

US Patent:

7571738, Aug 11, 2009

Filed:

Mar 8, 2006

Appl. No.:

11/370310

Inventors:

Thanh Ho - Brunswick OH, US
Carolyn Dute - Spencer OH, US

Assignee:

Bendix Commercial Vehicle Systems LLC - Elyria OH

International Classification:

F16K 11/00

US Classification:

137102, 1375124

Abstract:

A flow control device having a first port, a second port, a third port and the movable member. In a first mode, the movable member seals the second port while allowing fluid flow between the first and third ports, wherein the differential pressure between the first port and third port, during the first mode, is about zero. In the second mode, the movable member seals the first port while allowing fluid flow between the third port and second port, wherein the movable member is adapted to transition from the first mode to the second mode in response to a small change in differential pressure.

US Patent:

7780245, Aug 24, 2010

Filed:

Aug 13, 2007

Appl. No.:

11/837977

Inventors:

Thanh Ho - Brunswick OH, US

Assignee:

Bendix Commercial Vehicle Systems LLC - Elyria OH

International Classification:

B60T 8/34

US Classification:

3031192, 3031181

Abstract:

A service brake/traction control valve includes a service brake control port, a traction control port, an exhaust port, and a control chamber. The control chamber fluidly communicates with the service brake control port and the traction control port as a function of a service brake event and as a function of a traction control event. The control chamber fluidly communicates with the exhaust port when the service brake event is released. The control chamber fluidly also communicates with the exhaust port when the traction control event is released.

US Patent:

8196597, Jun 12, 2012

Filed:

Jun 22, 2007

Appl. No.:

11/767159

Inventors:

Thanh Ho - Brunswick OH, US

Assignee:

Bendix Commercial Vehicle Systems LLC - Elyria OH

International Classification:

F17D 3/01

US Classification:

137 12, 1375135, 1375123

Abstract:

In one aspect of the present invention, it is contemplated that a valve includes a passage. A first sealing element is biased to restrict flow of a fluid in a first direction through the passage when an upstream volumetric flow rate of the fluid in the first direction is less than a first predetermined threshold. A second sealing element is biased to unrestrict flow of the fluid to a baseline unrestricted flow rate in a second direction through the passage when an upstream volumetric flow rate of the fluid in the second direction is less than a second predetermined threshold.

US Patent:

8267107, Sep 18, 2012

Filed:

Mar 2, 2010

Appl. No.:

12/715971

Inventors:

Thanh Ho - Brunswick OH, US

Assignee:

Bendix Commercial Vehicle Systems LLC - Elyria OH

International Classification:

F15B 13/042
F15B 13/04

US Classification:

137 1, 13762526, 13762527

Abstract:

A valve includes a valve housing. A bore is in the valve housing. An inlet supply port fluidly communicates a pressurized supply fluid to the bore. A piston is movably positioned in the bore based on the pressure of the supply fluid. A portion of the piston extends into a frusto-conically shaped portion of the bore. A sealing member is associated with the portion of the piston sealingly engaging a surface of the frusto-conically shaped portion of the bore based on the pressure of the supply fluid. An inlet valve, movably positioned in the bore, is biased to sealingly engage a wall of the bore based on the pressure of the supply fluid. A control pressure supply port fluidly communicates a pressurized control fluid to the bore through the valve housing. A control pressure delivery port fluidly communicates with the control pressure supply port, via the bore, based on the pressure of the supply fluid. A venting port fluidly communicates with the control pressure delivery port, via the bore, based on the pressure of the supply fluid.

US Patent:

8322376, Dec 4, 2012

Filed:

Jun 9, 2008

Appl. No.:

12/135664

Inventors:

Thanh Ho - Brunswick OH, US

Assignee:

Bendix Commercial Vehicle Systems, LLC - Elyria OH

International Classification:

F16K 31/06

US Classification:

13762565, 13762568, 1375962, 13759617, 25112921, 25112922

Abstract:

In one embodiment, a solenoid valve includes a supply port that fluidly communicates with a source of compressed air, a delivery port, a bore that selectively fluidly communicates with the supply and delivery ports, an armature in the bore, a pole piece in the bore, and a coil that is selectively energized with electrical power. The coil is around the armature and pole piece. The armature and pole piece selectively sealingly engage and move as an armature/pole piece single unit as a function of the electrical power in the coil. A position of the armature/pole piece within the bore controls fluid communication between the supply port and the delivery port.

US Patent:

8474487, Jul 2, 2013

Filed:

Jul 22, 2010

Appl. No.:

12/841545

Inventors:

Thanh Ho - Brunswick OH, US

Assignee:

Bendix Commercial Vehicle System LLC - Elyria OH

International Classification:

F16K 11/07
F16K 11/18

US Classification:

13762566, 13762527, 13762564

Abstract:

A latching valve includes a housing, a supply port, defined in the housing, which receives supply pressure, a delivery port defined in the housing, an exhaust port, defined in the housing, and an apply port defined in the housing. A housing bore fluidly communicates with the supply port, the delivery port, the exhaust port, and the apply port fluidly. A shuttle is sealingly and movably secured in the housing bore. The shuttle is alternately set to one of an apply position and a release position as a function of sequential pilot pressures at the apply port acting on the shuttle, and as a function of the supply pressure acting on one of an apply pair of sealed seats with different diameters in the housing bore and a release pair of sealed seats with different diameters in the housing bore. The delivery port fluidly communicates with the supply port while the shuttle is in the apply position. The delivery port fluidly communicates with the exhaust port while the shuttle is in the release position.