Howard Trung Tran

US Patent:

54658160, Nov 14, 1995

Filed:

Jul 20, 1994

Appl. No.:

8/277837

Inventors:

Roland S. Moore - Taylors SC
Howard T. Tran - Greenville SC

Assignee:

Westinghouse Air Brake Company - Wilmerding PA

International Classification:

F16D 6538

US Classification:

188196P

Abstract:

A slack adjusting brake cylinder for use in a fluid brake unit of a railway transit vehicle having a brake piston slidably mounted on a support rod within a brake cylinder receiving cavity of the brake unit. A plurality of friction/load rings are slidably mounted on the support rod, a first side of which serves as an abutment stop to limit the extent of return of the brake piston along the support rod. The friction/load rings are tightly engaged on the support rod so that they are slidable only in response to fluid brake pressure forces. A spring loaded compression member is engaged with a second side of the friction/load rings, and is partially compressed between the brake piston and the friction/load rings when the brake piston is advanced outwardly on the support rod in response to activation of the brake unit, and functions to return the brake piston into engagement with the friction/load rings when the brake unit is deactivated. The degree of compression of the spring loaded compression member is limited so that when the compression has reached the limit, the spring loaded compression member will push the friction/load rings to a new position on the support rod.

US Patent:

61429473, Nov 7, 2000

Filed:

Dec 4, 1998

Appl. No.:

9/205822

Inventors:

Howard Tran - Santa Clara CA
Roland Jeffrey Wyatt - San Jose CA
Gilbert Lima - Fremont CA

Assignee:

General Electric Company - Milwaukee WI

International Classification:

A61B 814

US Classification:

600459

Abstract:

A repairable compact ultrasound probe which is easy to assemble and disassemble, and which has cable load transfer and heat dissipation capabilities. The transducer assembly of the probe has a heat-conductive backing board which is fastened to a yoke incorporated in the cable assembly. The cable assembly further has a strain relief element which is secured in a separate operation following attachment of the yoke to the backing board. When the strain relief element is secured, the probe handle is compressed between the strain relief and a headshell of the transducer assembly, thereby forming a housing. To disassemble the probe, the strain relief is turned counterclockwise with respect to the transducer, thereby releasing the handle and allowing access to the probe interior.

US Patent:

55155073, May 7, 1996

Filed:

Dec 23, 1993

Appl. No.:

8/173317

Inventors:

Larry L. Byers - Apple Valley MN
Joseba M. De Subijana - Minneapolis MN
Wayne A. Michaelson - Circle Pines MN
Lloyd E. Thorsbakken - Minneapolis MN
Howard H. Tran - Woodbury MN

Assignee:

Unisys Corporation - Blue Bell PA

International Classification:

G06F 1134

US Classification:

39518509

Abstract:

A bus architecture and associated circuitry for providing communication between processors and multiple gate arrays whereby the size of the data being transferred may be either full words of 32-bits or 36-bits per word, or half words of 16-bits or 18-bits per word. Parity generation logic operates on the data to be sent over the bus to generate a parity value from the correct data bits depending on the selected data word size. Parity checking logic operates on the data received from the bus to check the parity of the correct data bits depending on the selected data word size.

US Patent:

20200162155, May 21, 2020

Filed:

Jan 27, 2020

Appl. No.:

16/773285

Inventors:

- Mountain View CA, US
Howard Tran - San Ramon CA, US
Robert Steinkraus - San Francisco CA, US

International Classification:

H04B 10/077
H04B 10/11
H04B 10/60
H04B 10/50
H04B 10/112

Abstract:

Aspects of the disclosure provide for a method of transmitting state information using free-space optical communication. The method includes using one or more processors of a first communication device to collect state information of the first communication device. A supervisor signal that carries the state information is transmitted from the first communication device along with a beacon beam in a first solid angle. The supervisor signal is a frequency different from the one or more frequencies of the beacon beam. When a communication link is established between the first communication device and a second communication device, a plurality of data packets is transmitted from the first communication device to the second communication device in a second solid angle smaller than the first solid angle. A subset of the plurality of data packets that do not carry client data carries the state information of the first communication device.

US Patent:

20190346259, Nov 14, 2019

Filed:

Jul 22, 2019

Appl. No.:

16/518187

Inventors:

- Mountain View CA, US
Howard Tran - San Ramon CA, US

International Classification:

G01B 11/27
H04B 10/112
H04B 10/25

Abstract:

Aspects of the disclosure provide for a method of aligning a tracking system of a communication device. The method includes receiving an optical beam at the communication device. A first beam portion is received at the tracking system, and a second beam portion is received at an optical fiber of the communication device. Using one or more processors, an first signal and an second signal is received from the tracking system. The one or more processors are also used to determine a phase difference related to the first signal and a second phase difference related to the second signal. An offset for the first signal and an offset for the second signal are determined based on the respective phase difference. The one or more processors then track the optical beam using the tracking system and the determined offsets.

US Patent:

20190326984, Oct 24, 2019

Filed:

Jan 24, 2019

Appl. No.:

16/256478

Inventors:

- Mountain View CA, US
Howard Tran - San Ramon CA, US
Robert Steinkraus - San Francisco CA, US

International Classification:

H04B 10/077
H04B 10/60
H04B 10/50
H04B 10/11

Abstract:

Aspects of the disclosure provide for a method of transmitting state information using free-space optical communication. The method includes using one or more processors of a first communication device to collect state information of the first communication device. A supervisor signal that carries the state information is transmitted from the first communication device along with a beacon beam in a first solid angle. The supervisor signal is a frequency different from the one or more frequencies of the beacon beam. When a communication link is established between the first communication device and a second communication device, a plurality of data packets is transmitted from the first communication device to the second communication device in a second solid angle smaller than the first solid angle. A subset of the plurality of data packets that do not carry client data carries the state information of the first communication device.