Trung K Tran

US Patent:

6404294, Jun 11, 2002

Filed:

Jul 18, 2000

Appl. No.:

09/618706

Inventors:

I-Teh Sha - Santa Clara CA
Kuang-Yu Chen - Saratoga CA
Trung Tran - Sunnyvale CA

Assignee:

Cypress Semiconductor Corp. - San Jose CA

International Classification:

H03B 524

US Classification:

331 57, 331 10

Abstract:

An apparatus comprising a first circuit and a second circuit. The first circuit may be configured to generate an output signal having a frequency that varies in response to (i) a voltage signal and (ii) a load. The second circuit may be configured to generate the load by coupling one or more resistive devices to a reference node in response to a control signal.

US Patent:

6997974, Feb 14, 2006

Filed:

Nov 15, 2004

Appl. No.:

10/990092

Inventors:

Trung N. Tran - Torrance CA, US
Tom Iles - Rancho Palos Verdes CA, US
Christopher L. Scott - Los Alamitos CA, US

Assignee:

Honeywell International, Inc. - Morristown NJ

International Classification:

B01D 46/00
B01D 39/16
B01D 39/20

US Classification:

95273, 95284, 95286, 55319, 55423, 55424, 55428, 55487, 55498, 55503, 55510, 55523, 55525, 55528, 55DIG 5, 55DIG 17, 55DIG 25, 428458, 4284735, 4284744, 264258

Abstract:

A coalescing assembly for coalescing entrained oil from a high temperature, high velocity gas stream comprises a coalescing element of compacted high temperature polyamide fibers, such as those available under the trademark Nomex, rigidly held by concentric cylindrical support structures of a dense fibrous material such as stainless steel. The coalescing assembly forms a component of an oil coalescer having a unique hole configuration in its outer shell to prevent coalesced oil from being re-entrained into the gas stream. The oil coalescer is a component of an oil separator for use in aircraft operational environments and features high durability and longevity of 10 years or more.

US Patent:

7327199, Feb 5, 2008

Filed:

Sep 23, 2005

Appl. No.:

11/233963

Inventors:

David Kwong - Fremont CA, US
Trung Tran - Sunnyvale CA, US

Assignee:

Cypress Semiconductor Corp. - San Jose CA

International Classification:

G01R 35/00

US Classification:

331 44, 324523, 702106

Abstract:

According to one embodiment, a phase-locked loop (PLL) device includes test circuitry for entering/exiting a test mode upon receiving a particular pulse train at a reference clock input of the PLL. In addition, exemplary methods are provided herein for entering a test mode and detecting loop filter leakage within the PLL. The methods described herein are performed without the use of a dedicated test pin.

US Patent:

7354216, Apr 8, 2008

Filed:

Apr 12, 2005

Appl. No.:

11/103973

Inventors:

Christopher F. Dunmire - Palos Verdes Estates CA, US
Trung N. Tran - Torrance CA, US
Christopher L. Scott - Los Alamitos CA, US

Assignee:

Honeywell International, Inc. - Morristown NJ

International Classification:

B25G 3/28
F16D 1/00

US Classification:

4033591, 403288

Abstract:

A grease seal cup for a splined joint between a drive shaft and a driven shaft comprises a cylindrical portion adapted to form a seal with the outer surface of the drive shaft and a seal with a sealing member, such as a spanner nut, of the driven shaft. The grease seal cup, comprising a flexible polymer material, tightly squeezed during installation to form the seals. The pre-fabricated light weight grease seal cup can be used in existing splined joints without adversely affecting the weight balance.

US Patent:

7510195, Mar 31, 2009

Filed:

Nov 21, 2003

Appl. No.:

10/719223

Inventors:

Yoshio Usui - Torrance CA, US
Tom Iles - Rancho Palos Verde CA, US
Trung N. Tran - Torrance CA, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

F16J 9/14
F16J 9/26
F02F 5/00

US Classification:

277435, 277498, 277465

Abstract:

A piston ring for use at temperatures above 350 F. at pressures greater than or equal to about 2000 psi, comprising a gap having a gap width about 1. 4 to about 2. 0 times greater than a thickness of the piston ring; a height about 4. 5 to about 6. 4 times larger than the thickness, and a leading edge characterized by an arc having a radius of curvature of less than or equal to about 4 times the height. The piston ring may be formed of a material comprising cobalt, chromium, tungsten, and carbon. A gas compressor and method of sealing a piston using the above piston ring is also provided for.

US Patent:

7966925, Jun 28, 2011

Filed:

Feb 9, 2007

Appl. No.:

11/673427

Inventors:

Trung N. Tran - Torrance CA, US
Constante A. Loresco - Laguna Niguel CA, US
Filip A. Reinis - Long Beach CA, US

Assignee:

Honeywell International Inc - Morristown NJ

International Classification:

F16J 10/04
F01B 31/18

US Classification:

92 86, 921711

Abstract:

A sealing unit includes a mismatched metal-to-metal seal and an o-ring seal with a vent hole therebetween. The mismatched metal-to-metal seal may provide a sealing surface between two metals that may withstand high temperatures and pressure while avoiding leakage over many cycles. The sealing units of the present invention may provide a seal capable of withstanding pressures greater than about 5,000 psig, and typically greater than 6,000 psig, and more typically greater than 7,000 psig; and temperatures greater than about 300 F. , and typically greater than about 400 F. , and more typically greater than about 500 F. over a service life of more than 5,000 cycles. By providing a vent hole between the metal-to-metal seal and the o-ring seal, should either seal leak, damage to the other/good seal may be prevented by expelling the leak out of the system.

US Patent:

8584342, Nov 19, 2013

Filed:

Feb 14, 2008

Appl. No.:

12/031427

Inventors:

Christopher F. Dunmire - Palos Verdes Estates CA, US
Trung N. Tran - Torrance CA, US
Christopher L. Scott - Los Alamitos CA, US

Assignee:

Honeywell International, Inc. - Morristown NJ

International Classification:

B21D 39/00
B23P 11/00

US Classification:

29521, 29434, 4033591, 464 7

Abstract:

A method for retaining lubrication in a splined joint comprises the steps of forming a seal between an inward surface of a grease seal cup and a first component, forming another seal between an outward surface of the grease seal cup and a sealing member extending from a second component, and engaging an end portion of the grease seal cup with an end portion of the first component, so that the end portion of the grease seal cup resists axial displacement of the grease seal cup during engagement of the first component with the second component. The grease seal cup of the method has a cylindrical portion integral with the end portion. The cylindrical portion has a tapered annular wall with the inward and outward surfaces. The end portion of the grease seal cup extends radially and inwardly from the cylindrical portion, so that the tapered annular wall is squeezed between the first component and the sealing member. The pre-fabricated light weight grease seal cup can be used in existing splined joints without adversely affecting the weight balance.

US Patent:

20040118092, Jun 24, 2004

Filed:

Dec 20, 2002

Appl. No.:

10/325201

Inventors:

Trung Tran - Torrance CA, US
Tom Iles - Rancho Palos Verdes CA, US
Christopher Scott - Los Alamitos CA, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

B01D046/00

US Classification:

055/423000, 055/498000, 055/486000

Abstract:

A coalescing assembly for coalescing entrained oil from a high temperature, high velocity gas stream comprises a coalescing element of compacted high temperature polyamide fibers, such as those available under the trademark Nomex, rigidly held by concentric cylindrical support structures of a dense fibrous material such as stainless steel. The coalescing assembly forms a component of an oil coalescer having a unique hole configuration in its outer shell to prevent coalesced oil from being re-entrained into the gas stream. The oil coalescer is a component of an oil separator for use in aircraft operational environments and features high durability and longevity of 10 years or more.