David Y Tang

US Patent:

7210304, May 1, 2007

Filed:

Feb 9, 2005

Appl. No.:

11/054483

Inventors:

James M. Nagashima - Cerritos CA, US
Karl D. Conroy - Huntington Beach CA, US
Eric R. Ostrom - Bellflower CA, US
Gregory S. Smith - Woodland Hills CA, US
George John - Cerritos CA, US
David Tang - Fontana CA, US
Terence G. Ward - Redondo Beach CA, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F23D 23/12

US Classification:

622592, 62310

Abstract:

In order to provide a modular arrangement, an inverter for an electric traction motor used to drive an automotive vehicle is positioned in proximity with the traction motor. The inverter is located within a compartment adjacent to one end of the electric traction motor and is cooled in a closed system by spraying a liquid coolant directly onto the inverter. The liquid coolant absorbs heat from the inverter and is cooled by a heat exchange arrangement comprising a reservoir with pipes carrying a second coolant from the radiator of the automotive vehicle. In a preferred embodiment, the coolant is collected from the inverter in an annular reservoir that is integral with the compartment containing the inverter. In accordance with one embodiment of the cooling arrangement, heat from the inverter vaporizes the liquid coolant by absorbing heat from the inverter during a phase change from a liquid to a vapor. The vaporized coolant is condensed by a circulating second coolant in pipes connected to the vehicle's radiator through a condenser that is preferably coaxial with the motor and the annular reservoir, which annular reservoir in the second embodiment collects overspray liquid coolant.

US Patent:

7279862, Oct 9, 2007

Filed:

Aug 4, 2006

Appl. No.:

11/462432

Inventors:

Brian Welchko - Torrance CA, US
Jonathan B Huse - Rancho Santa Margaritia CA, US
Silva Hiti - Redondo Beach CA, US
Brendan M. Conlon - Rochester Hills MI, US
Constantin C. Stancu - Anaheim CA, US
Khwaja M. Rahman - Troy MI, US
David Tang - Fontana CA, US
William R. Cawthorne - Milford MI, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

G05B 9/02

US Classification:

318564, 318565, 318616, 318563, 388804, 361 23

Abstract:

An apparatus includes a multi-phase inverter, a fault detector to indicate a detection of a fault, a sensor to provide a speed signal indicative of whether a speed of a PM motor is greater than a transition speed, and a controller. The controller is operable to apply either an open-circuit response or a short-circuit response to the multi-phase inverter. The open-circuit response is applied when the speed of the PM motor is greater than the transition speed and a fault is detected. The short-circuit response is applied when the speed of the PM motor is less than the transition speed and the fault is detected. The transition speed is either a fixed predetermined speed or an adjusted predetermined speed.

US Patent:

7312653, Dec 25, 2007

Filed:

Mar 10, 2005

Appl. No.:

11/077475

Inventors:

Keming Chen - Torrance CA, US
David Tang - Fontana CA, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

G01F 1/10

US Classification:

327545, 361245, 361246

Abstract:

A reverse polarity protected system comprises a voltage source that includes positive and negative terminals. A polarity-sensitive device has a first terminal that communicates with the positive terminal of the voltage source, and that includes a second terminal. A low-resistance switch communicates with the first and second terminals of the voltage source, and communicates with the second terminal of the polarity-sensitive device. The low-resistance switch assumes a conducting state between the second terminal of the polarity-sensitive device and the negative terminal of the voltage source when a first voltage at the positive terminal of the voltage source minus a second voltage at the negative terminal of the voltage source is greater than a threshold voltage. Otherwise, the low-resistance switch assumes a non-conducting state.

US Patent:

7549833, Jun 23, 2009

Filed:

May 4, 2006

Appl. No.:

11/417845

Inventors:

David Tang - Rego Park NY, US

International Classification:

B65G 59/02
B65G 1/133
B66C 1/00
B66C 3/00

US Classification:

414797, 414737, 4147521, 901 6

Abstract:

An apparatus and method for automatically placing a sheet of glass in a glass frame. The apparatus includes a frame, a carriage, a first gripper, and a second gripper. The carriage is movably mounted to the frame to automatically move between a first position where the carriage is by a stack of glass sheets on a glass rack to a second position where the carriage is by the glass frame. The first gripper is movably mounted to the carriage and moves relative to the carriage to automatically engage the sheet of glass from the stack of glass sheets on the glass rack at the first position of the carriage and to automatically release the sheet of glass at the second position of the carriage. The second gripper automatically engages the sheet of glass when the first gripper automatically releases the sheet of glass at the second position of the carriage, and then automatically places the sheet of glass in the glass frame.

US Patent:

7597560, Oct 6, 2009

Filed:

Jul 11, 2008

Appl. No.:

12/171846

Inventors:

Mark D. Korich - Chino Hills CA, US
Young Doo - La Palma CA, US
David Tang - Fontana CA, US
Mark L. Selogie - Manhattan Beach CA, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

H01R 12/00

US Classification:

439 34, 439 762

Abstract:

An interface assembly for an inverter of a vehicle includes an interface, a plurality of busbars, a communication medium, and a clip. The interface is for communicating with one or more vehicle systems outside of the interface assembly. The plurality of busbars are configured to receive and transport electric current. The communication medium is electrically coupled between the plurality of busbars and the interface. The communication medium is configured to provide information to the interface based at least in part on the electric current transported by the plurality of busbars. The clip assembly is electrically coupled between the plurality of busbars and the communication medium.

US Patent:

7641490, Jan 5, 2010

Filed:

Dec 18, 2007

Appl. No.:

11/959176

Inventors:

Mark D. Korich - Chino Hills CA, US
Gregory S. Smith - Woodland Hills CA, US
George John - Cerritos CA, US
David Tang - Fontana CA, US
Karl D. Conroy - Huntington Beach CA, US

Assignee:

GM Global Technology Operations, Inc. - Detroit MI

International Classification:

H01R 4/64

US Classification:

439196

Abstract:

An inverter assembly includes a housing and a substrate disposed in the housing. The substrate includes at least a first conductive layer patterned to include an alternating current (AC) path and a direct current (DC) path. A plurality of inverter switches is mounted on the substrate and electrically coupled to the AC path and the DC path.

US Patent:

RE42200, Mar 8, 2011

Filed:

Dec 21, 2007

Appl. No.:

11/962370

Inventors:

Brian Welchko - Torrance CA, US
Jonathan B. Huse - Rancho Santa Margarita CA, US
Silva Hiti - Redondo Beach CA, US
Brendan M. Conlon - Rochester Hills MI, US
Constantin C. Stancu - Anaheim CA, US
Khwaja M. Rahman - Troy MI, US
David Tang - Fontana CA, US
William R. Cawthorne - Milford MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

G05B 9/02

US Classification:

318564, 318565, 318616, 318563, 388804, 361 23

Abstract:

An apparatus includes a multi-phase inverter, a fault detector to indicate a detection of a fault, a sensor to provide a speed signal indicative of whether a speed of a PM motor is greater than a transition speed, and a controller. The controller is operable to apply either an open-circuit response or a short-circuit response to the multi-phase inverter. The open-circuit response is applied when the speed of the PM motor is greater less than the transition speed and a fault is detected. The short-circuit response is applied when the speed of the PM motor is less greater than the transition speed and the fault is detected. The transition speed is either a fixed predetermined speed or an adjusted predetermined speed.

US Patent:

7907385, Mar 15, 2011

Filed:

Jul 14, 2008

Appl. No.:

12/172777

Inventors:

Mark D. Korich - Chino Hills CA, US
David Tang - Fontana CA, US
Mark L. Selogie - Manhattan Beach CA, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

H01G 4/228

US Classification:

3613061, 3613063, 361305, 361502, 361504, 361512

Abstract:

Systems and apparatus are provided for capacitor segments for use in a vehicle. A capacitor segment comprises an inner conductor configured to receive a first potential and having a generally L-shaped longitudinal cross-section. An outer conductor is configured to receive a second potential, and is electrically insulated from the inner conductor. The outer conductor comprises a first section having a generally L-shaped longitudinal cross-section aligned with the inner conductor, and a second section coupled to the first section and having a generally L-shaped lateral cross-section. The second section and the inner conductor define an inner region. A capacitor is located in the inner region and coupled to the inner conductor and the second section. The capacitor segment is configured such that current flows through the capacitor in a first direction, and current flows through the second section in a second direction that generally opposes the first direction.