Patents by Inventor Chen Tao
Chen Tao 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: 9163500Abstract: An apparatus including a downhole tool for conveyance in a wellbore extending into a subterranean formation. The downhole tool includes a feature to physically interface a sidewall of the wellbore, and first and second setting pistons each extendable from the downhole tool opposite the feature. The downhole tool also includes a rigid member spanning and extendable with the first and second setting pistons, wherein a length of the rigid member is variable.Type: GrantFiled: September 29, 2011Date of Patent: October 20, 2015Assignee: Schlumberger Technology CorporationInventors: Chen Tao, Thomas W. Meyer
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Publication number: 20150216005Abstract: An electrical circuit for use as a string of lights is provided with a load including a plurality of lamps connected in series, the lamps including a plurality of LEDs and a plurality of incandescent light bulbs, and a plurality of electrical resistors connected in series, the electrical resistors being in parallel with the lamps. The load is activated by a source of AC. The LEDs are alternate with the incandescent light bulbs.Type: ApplicationFiled: January 29, 2014Publication date: July 30, 2015Inventors: CHU-CHENG CHANG, Cheng-Fen Chang, Chen-Hsien Chang, Chen-Tao Chang
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Publication number: 20150142321Abstract: A method to detect flow rate from a displacement unit entailing locating the displacement unit in a fluid path, monitoring a piston position in the displacement unit for a stroke direction change, starting a timer upon a stroke direction change, monitoring at least one check valve position for an alteration of position, stopping the timer upon the alteration of position, calculating a time between the stroke direction change and the alternation of position, calculating a volume of the displacement unit and calculating the flow rate from the displacement unit by dividing the volume of the displacement unit by the calculated time.Type: ApplicationFiled: November 20, 2013Publication date: May 21, 2015Applicant: Schlumberger Technology CorporationInventors: Adriaan Gisolf, Kai Hsu, Youxiang Zuo, Chen Tao
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Publication number: 20150120462Abstract: Method, system, and terminals for pushing merchandise information are disclosed. The method includes: at a server: receiving first identification data from a first client device, wherein the first identification data is acquired by the first client device from a first merchandise item; establishing a first association between the first merchandise item and a first user account of the first client device; generating second identification data for the first association between the first user account and the first merchandise item; receiving the second identification data from a second client device; and in response to receiving the second identification data from the second client device, establishing a second association between a second user account of the second client device, the first merchandise item, and the first user account.Type: ApplicationFiled: January 2, 2015Publication date: April 30, 2015Inventors: Tao ZHANG, Feng Lu, Shunfu Ye, Chen Tao, Lichun Li, Hongmin Zheng
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Publication number: 20140299383Abstract: A downhole sampling tool includes a cam configured to rotate about a central axis. Two or more pistons engage a cam track such that rotation of the cam causes the pistons to reciprocate between first and second piston positions. Corresponding fluid flow lines are opened and closed when corresponding ones of the plurality of pistons reciprocate between the first and second piston positions.Type: ApplicationFiled: November 30, 2012Publication date: October 9, 2014Inventor: Chen Tao
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Publication number: 20140157883Abstract: Flowline pressure equalizer systems, methods and/or apparatuses for use on a downhole tool are provided. A pressure equalizer may be provided in communication with two flowlines. The pressure equalizer may use equalizing chambers and equalizing pistons to regulate pressure in one or both flowlines. Further, one or more flow routing modules may be interchangeable to further alter the flow scheme between the flowlines. Different plugs may house various flow routing configurations such that the plugs may be installed and/or removed in the tool string automatically or by a user.Type: ApplicationFiled: November 13, 2013Publication date: June 12, 2014Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: CHEN TAO, PIERRE-YVES CORRE, NATHAN LANDSIEDEL, SYLVAIN BEDOUET
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Publication number: 20140158228Abstract: An apparatus, a method and a system control fluid flow through a passageway. A downhole tool pumping apparatus may have a body and an active valve block. The body has a cavity housing a reciprocating piston defining first and second chambers within the cavity. The active valve block has active valves configured to be actively actuated between an open position and the closed position. Two or more hydraulic lines may be connected to each active valve for controlling actuating between the open position and the closed position. A piston having a conduit is slidably disposed through the passageway and selectively closes the conduit of the piston by moving at least one of the piston and a plug.Type: ApplicationFiled: March 14, 2013Publication date: June 12, 2014Applicant: Schlumberger Technology CorporationInventor: Chen Tao
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Patent number: 8561686Abstract: A probe for establishing fluid communication between a downhole tool and a subterranean formation is provided. The downhole tool is positioned in a wellbore penetrating the subterranean formation. The probe includes a platform operatively connected to the downhole tool, at least one packer operatively connected to the platform, the packer having at least one hole extending therethrough and at least one embedded member disposed in the packer for enhancing the operation of the packer as it is pressed against the wellbore wall.Type: GrantFiled: August 5, 2011Date of Patent: October 22, 2013Assignee: Schlumberger Technology CorporationInventors: Chen Tao, Danny A. Hlavinka, Jonathan W. Brown, Christopher S. Del Campo, Stephane Briquet, Steve Ervin, Kevin W. Hayes
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Publication number: 20130081803Abstract: An apparatus including a downhole tool for conveyance in a wellbore extending into a subterranean formation. The downhole tool includes a feature to physically interface a sidewall of the wellbore, and first and second setting pistons each extendable from the downhole tool opposite the feature. The downhole tool also includes a rigid member spanning and extendable with the first and second setting pistons, wherein a length of the rigid member is variable.Type: ApplicationFiled: September 29, 2011Publication date: April 4, 2013Inventors: Chen Tao, Thomas W. Meyer
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Patent number: 8220536Abstract: A probe for establishing fluid communication between a downhole tool and a subterranean formation. The downhole tool is positioned in a wellbore penetrating the subterranean formation. The probe includes a platform operatively connected to the downhole tool, at least one packer operatively connected to the platform, the packer having at least one hole extending therethrough and at least one embedded member disposed in the packer for enhancing the operation of the packer as it is pressed against the wellbore wall.Type: GrantFiled: March 3, 2010Date of Patent: July 17, 2012Assignee: Schlumberger Technology CorporationInventors: Chen Tao, Danny A. Hlavinka, Jonathan W. Brown, Christopher S. Del Campo, Stephane Briquet, Steve Ervin, Kevin W. Hayes
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Publication number: 20120082246Abstract: Signal transmitting device, signal receiving device, signal transceiver device and signal transmission method use a conductive case as a transmission line to transmit/receive a modulated control signal or a sensing signal. The signal transmitting device, the signal receiving device and the signal transceiver device adopt a capacitive coupling unit as a media to transmit/receive the modulated signal, which makes the conductive case as a carrier when coupling the modulated signal onto the conductive case. When the signal is carried on the conductive case, the modulated signal is able to be captured and well transmitted.Type: ApplicationFiled: September 30, 2010Publication date: April 5, 2012Applicant: What-Trend Technology Corp. Ltd.Inventors: Chen-Tao Su, Hong-Sheng Chen
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Patent number: 8132291Abstract: A hinge device includes a bearing seat, a spherical joint, a plurality of positioning pins, and a retaining ring. The bearing seat has a containing recess. The spherical joint is rotatably disposed in the containing recess, and the surface of the spherical joint has a plurality of positioning holes. The positioning pins are disposed at the bearing seat and capable of sliding toward or away from the spherical joint. The positioning pins correspond to parts of the positioning holes respectively when the spherical joint rotates to a specific position relative to the bearing seat. The retaining ring is disposed at an opening of the containing recess of the bearing seat and surrounds the positioning pins, the retaining ring is against the positioning pins to allow the positioning pins to be fastened in the corresponding positioning holes when the spherical joint rotates to the specific position relative to the bearing seat.Type: GrantFiled: March 18, 2010Date of Patent: March 13, 2012Assignee: Pegatron CorporationInventors: Chia-Ming Tsai, Shao-Tang Ma, Yi-Chen Tao, Bor-Woei Li, Wang-Sing Cai
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Patent number: 8100195Abstract: Example motor cooling radiators for use in downhole environments are disclosed. A disclosed example radiator comprises a cylindrical housing having an annular passageway. The housing defines an inlet at a first end of the housing and an outlet at a second opposite end of the housing. A channel is arranged within the annular passageway of the housing along a spiral path to transport the first liquid and to define a spiral flow passageway between the inlet and the outlet for the second liquid. In operation, the first liquid does not contact the second liquid and heat is transferred between the first and second liquids as the second liquid flows in the spiral passageway.Type: GrantFiled: June 2, 2009Date of Patent: January 24, 2012Assignee: Schlumberger Technology CorporationInventors: Chen Tao, Thomas Meyer
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Publication number: 20110284212Abstract: A probe for establishing fluid communication between a downhole tool and a subterranean formation is provided. The downhole tool is positioned in a wellbore penetrating the subterranean formation. The probe includes a platform operatively connected to the downhole tool, at least one packer operatively connected to the platform, the packer having at least one hole extending therethrough and at least one embedded member disposed in the packer for enhancing the operation of the packer as it is pressed against the wellbore wall.Type: ApplicationFiled: August 5, 2011Publication date: November 24, 2011Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Chen Tao, Danny A. Hlavinka, Jonathan W. Brown, Christopher S. Del Campo, Stephane Briquet, Steve Ervin, Kevin W. Hayes
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Patent number: 8053995Abstract: An electrical circuit for use as a string of lights in one embodiment includes a rectifier for converting AC into DC; and a plurality of lamps connected in series, each lamp having an LED, and wherein at least one of the lamps each has a Zener diode connected in series with the LED, a positive terminal of the lamp proximate the rectifier is connected to a positive terminal of an output of the rectifier, and a negative terminal of the lamp distal the rectifier is connected to a negative terminal of the output of the rectifier. In another embodiment, the Zener diode is replaced with a resistor. Hence, no resistors are provided externally of the lamp.Type: GrantFiled: September 30, 2008Date of Patent: November 8, 2011Inventors: Chu-Cheng Chang, Cheng-Fen Chang, Chen-Hsien Chang, Chen-Tao Chang
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Patent number: 8044599Abstract: In one embodiment an electrical circuit for use as a string of lights includes a load comprising a plurality of lamps connected in series, the lamps comprising a first group of lamps including an LED and a first Zener diode in parallel therewith, and a second group of lamps including an incandescent light bulb and a second Zener diode in parallel therewith; and a rectifier for converting a source of AC into DC which is supplied to the load. The first group of lamps are alternate with the second group of lamps.Type: GrantFiled: February 17, 2009Date of Patent: October 25, 2011Inventors: Chu-Cheng Chang, Cheng-Fen Chang, Chen-Hsien Chang, Chen-Tao Chang
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Publication number: 20100315014Abstract: An electrical circuit for use as a string of lights in one embodiment includes a full-wave rectifier for converting an electrical source of AC into DC; and a load comprising a plurality of lamps connected in series, each of the lamps comprising an LED, a loading member in parallel with the LED, and a conductor interconnecting the LED and the loading member. The loading member is either a bidirectional Zener diode or a resistor element.Type: ApplicationFiled: June 16, 2009Publication date: December 16, 2010Inventors: Cheng-Fen Chang, Chen-Hsien Chang, Chen-Tao Chang
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Publication number: 20100300751Abstract: Example motor cooling radiators for use in downhole environments are disclosed. A disclosed example radiator comprises a cylindrical housing having an annular passageway. The housing defines an inlet at a first end of the housing and an outlet at a second opposite end of the housing. A channel is arranged within the annular passageway of the housing along a spiral path to transport the first liquid and to define a spiral flow passageway between the inlet and the outlet for the second liquid. In operation, the first liquid does not contact the second liquid and heat is transferred between the first and second liquids as the second liquid flows in the spiral passageway.Type: ApplicationFiled: June 2, 2009Publication date: December 2, 2010Inventors: Chen Tao, Thomas Meyer
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Publication number: 20100236020Abstract: A hinge device includes a bearing seat, a spherical joint, a plurality of positioning pins, and a retaining ring. The bearing seat has a containing recess. The spherical joint is rotatably disposed in the containing recess, and the surface of the spherical joint has a plurality of positioning holes. The positioning pins are disposed at the bearing seat and capable of sliding toward or away from the spherical joint. The positioning pins correspond to parts of the positioning holes respectively when the spherical joint rotates to a specific position relative to the bearing seat. The retaining ring is disposed at an opening of the containing recess of the bearing seat and surrounds the positioning pins, the retaining ring is against the positioning pins to allow the positioning pins to be fastened in the corresponding positioning holes when the spherical joint rotates to the specific position relative to the bearing seat.Type: ApplicationFiled: March 18, 2010Publication date: September 23, 2010Inventors: Chia-Ming Tsai, Shao-Tang Ma, Yi-Chen Tao, Bor-Woei Li, Wang-Sing Cai
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Publication number: 20100207533Abstract: In one embodiment an electrical circuit for use as a string of lights includes a load comprising a plurality of lamps connected in series, the lamps comprising a first group of lamps including an LED and a first Zener diode in parallel therewith, and a second group of lamps including an incandescent light bulb and a second Zener diode in parallel therewith; and a rectifier for converting a source of AC into DC which is supplied to the load. The first group of lamps are alternate with the second group of lamps.Type: ApplicationFiled: February 17, 2009Publication date: August 19, 2010Inventors: Chu-Cheng Chang, Cheng-Fen Chang, Chen-Hsien Chang, Chen-Tao Chang