Patents by Inventor Jan Lu
Jan Lu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7913503Abstract: A refrigerant expansion assembly, and method of operation, for use in a vehicle air conditioning system is disclosed. The assembly has a main body including an orifice inlet port, an orifice outlet port, an orifice channel extending between the orifice inlet and outlet ports and including a fixed orifice, an upstream bypass channel extending from the orifice channel between the orifice inlet port and the fixed orifice and including a valve seat, and a downstream bypass channel extending from the orifice channel between the fixed orifice and the orifice outlet port. A bypass valve flange extends from the main body, forming a bypass chamber connected to the upstream bypass channel and the downstream bypass channel, with the ball valve seat adjacent to the bypass chamber. A check ball mounts in the bypass chamber adjacent to the valve seat, and a spring biases the check ball into the valve seat.Type: GrantFiled: May 22, 2008Date of Patent: March 29, 2011Assignee: GM Global Technology Operations LLCInventors: Jan Lu, Harry E. Eustice, Edwin J. Stanke
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Patent number: 7913504Abstract: A refrigerant expansion assembly, and method of operation, for use in a vehicle air conditioning system is disclosed. An orifice channel connects an orifice inlet port to an orifice outlet port and includes a valve seat. A variable orifice assembly is mounted in the orifice channel and includes a fixed orifice passage extending axially through a variable orifice body having a sealing flange that can seal against a valve seat via an orifice spring. An orifice bypass valve includes a check ball biased against a ball seat by a bypass spring and selectively allows some of the refrigerant to bypass the variable orifice assembly. The refrigerant expansion assembly may also include a burst disk downstream of the variable orifice assembly.Type: GrantFiled: May 22, 2008Date of Patent: March 29, 2011Assignee: GM Global Technology Operations LLCInventors: Jan Lu, Harry E. Eustice, Edwin J. Stanke
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Patent number: 7631580Abstract: A wrench for tightening threaded male and female pipe nuts includes a wrench gear rotatable within a housing and having a nut slot so that the wrench gear can be engaged upon one of the nuts. A pair of pinion drive gears engage with gear teeth of the wrench gear at spaced apart locations on the periphery so that at least one of the pinion drive gears is engaged with the wrench gear at all times during rotation of the wrench gear to tighten the one nut. A nut holding plate has a nut slot and is mounted on the housing by a pin and slot arrangement so that the nut holding plate can shift to enable the nut holding plate to be engaged upon the other nut and hold the other nut stationary while the wrench gear is rotated to tighten the one nut.Type: GrantFiled: November 13, 2007Date of Patent: December 15, 2009Assignee: GM Global Technology Operations, Inc.Inventors: Jan Lu, Michael M. Arvaneh, Klaus Philipps
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Publication number: 20090288435Abstract: A refrigerant expansion assembly, and method of operation, for use in a vehicle air conditioning system is disclosed. The assembly has a main body including an orifice inlet port, an orifice outlet port, an orifice channel extending between the orifice inlet and outlet ports and including a fixed orifice, an upstream bypass channel extending from the orifice channel between the orifice inlet port and the fixed orifice and including a valve seat, and a downstream bypass channel extending from the orifice channel between the fixed orifice and the orifice outlet port. A bypass valve flange extends from the main body, forming a bypass chamber connected to the upstream bypass channel and the downstream bypass channel, with the ball valve seat adjacent to the bypass chamber. A check ball mounts in the bypass chamber adjacent to the valve seat, and a spring biases the check ball into the valve seat.Type: ApplicationFiled: May 22, 2008Publication date: November 26, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATION. INC.Inventors: Jan Lu, Harry E. Eustice, Edwin J. Stanke
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Publication number: 20090288436Abstract: A refrigerant expansion assembly, and method of operation, for use in a vehicle air conditioning system is disclosed. An orifice channel connects an orifice inlet port to an orifice outlet port and includes a valve seat. A variable orifice assembly is mounted in the orifice channel and includes a fixed orifice passage extending axially through a variable orifice body having a sealing flange that can seal against a valve seat via an orifice spring. An orifice bypass valve includes a check ball biased against a ball seat by a bypass spring and selectively allows some of the refrigerant to bypass the variable orifice assembly. The refrigerant expansion assembly may also include a burst disk downstream of the variable orifice assembly.Type: ApplicationFiled: May 22, 2008Publication date: November 26, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jan Lu, Harry E. Eustice, Edwin J. Stanke
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Publication number: 20090249246Abstract: Methods for transmitting an instant message while a computer working in a full-screen mode. The method includes a computer executing the full-screen mode and a display control program first, and then fetching a message from an instant messenger module, and transmitting the message to the display control program, which embeds the message into a frame to be displayed next by the full-screen mode, and displaying the frame with the message. In such a way, a user is allowed to transmit and receive the message via the instant messenger module while a computer working in a full-screen mode, thus improving the convenience of using the full-screen mode.Type: ApplicationFiled: March 18, 2009Publication date: October 1, 2009Applicant: ASUSTeK COMPUTER INC.Inventors: Chun-Kai Chan, Li-Hsiang Liao, Ching-Jan Lu, Kao-Yi Chiu
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Publication number: 20090120244Abstract: A wrench for tightening threaded male and female pipe nuts includes a wrench gear rotatable within a housing and having a nut slot so that the wrench gear can be engaged upon one of the nuts. A pair of pinion drive gears engage with gear teeth of the wrench gear at spaced apart locations on the periphery so that at least one of the pinion drive gears is engaged with the wrench gear at all times during rotation of the wrench gear to tighten the one nut. A nut holding plate has a nut slot and is mounted on the housing by a pin and slot arrangement so that the nut holding plate can shift to enable the nut holding plate to be engaged upon the other nut and hold the other nut stationary while the wrench gear is rotated to tighten the one nut.Type: ApplicationFiled: November 13, 2007Publication date: May 14, 2009Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Jan Lu, Michael M. Arvaneh, Klaus Philipps
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Publication number: 20080152319Abstract: An apparatus for processing multimedia stream and a method for transmitting multimedia stream are provided. In the present invention, a virtual capturing unit is used as a medium between a plurality of multimedia stream sources and multimedia stream destinations. The format of the multimedia stream is converted to a specific streaming format such as a video capturing source format and an audio capturing source format. The converted multimedia stream is then outputted to multimedia stream destination. Therefore, the variety of multimedia stream that the multimedia stream destination can use is increased. In addition, based on the configuration of the present invention, the program of the multimedia stream source and multimedia stream destination can be developed independently, so that the complexity of development is reduced.Type: ApplicationFiled: December 20, 2007Publication date: June 26, 2008Applicant: ASUSTEK COMPUTER INC.Inventors: Chih-Hao Liang, Li-Hsiang Liao, Ching-Jan Lu
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Publication number: 20080155113Abstract: A device, a system and a method for remotely processing multimedia stream are disclosed. In the present invention, an instant communicating module is used for establishing a communication interface between a remote device and a stream operating device. An operating function for the multimedia stream is executed according to an operating command given by the remote device. Furthermore, a virtual capturing unit is used for converting the format of the multimedia stream into a specific streaming format supported by the instant communicating module. Finally, the processed multimedia stream is output to the remote device via the instant communicating module. Therefore, the present invention not only realizes the ideal of remotely receiving multimedia stream, but also provides various operating functions for multimedia stream, such that users may enjoy the pleasure of viewing or listening multimedia stream remotely at their will via instant communicating module.Type: ApplicationFiled: December 20, 2007Publication date: June 26, 2008Applicant: ASUSTEK COMPUTER INC.Inventors: Ching-Jan Lu, Chih-Hao Liang, Li-Hsiang Liao