Patents by Inventor Lin Jin
Lin Jin 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: 10294430Abstract: An integrated process for production of gasoline has been described. The process includes a C5-C6 isomerization zone with an associated deisohexanizer, two C7 isomerization zones separated by a deisoheptanizer, and a reforming zone. The use of two C7 isomerization zones eliminates the need for the large recycle stream from the deisoheptanizer. The C6 cycloalkanes and heavies from the deisohexanizer are fed to the second C7 isomerization zone to increase the amount of 95 RONC gasoline produced. A higher percentage of 95 RONC gasoline may be achieved by further recycling C6 from deisoheptanizer overhead back to C5-C6 isomerization zone. Higher gasoline yields and higher percentage of 95 RONC gasoline is achieved over the whole naphtha complex with operating costs savings by fully integrating the C5-C6 isomerization zone, two C7 isomerization zones, deisohexanizer and deisoheptanizer columns.Type: GrantFiled: July 30, 2018Date of Patent: May 21, 2019Assignee: UOP LLCInventors: Lin Jin, Charles P. Luebke
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Patent number: 9683179Abstract: Processes for catalytic reforming in which a cracking inhibitor, such as an olefin, or a light olefin, is used to inhibit thermal cracking of larger hydrocarbons in non-reactive zones. The cracking inhibitor may be added at various positions through the processes, such as in the recycle gas stream, before a heater, before a stream is passed into a reforming zone, after an effluent stream is recovered from a reforming zone. A molar ratio of cracking inhibitor to hydrocarbons in stream may be between 0.01 and 0.2.Type: GrantFiled: June 9, 2016Date of Patent: June 20, 2017Assignee: UOP LLCInventors: Erik Holmgreen, Lin Jin, Mark P. Lapinski, Brian M. Devereux
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Publication number: 20160369179Abstract: Processes for catalytic reforming in which a cracking inhibitor, such as an olefin, or a light olefin, is used to inhibit thermal cracking of larger hydrocarbons in non-reactive zones. The cracking inhibitor may be added at various positions through the processes, such as in the recycle gas stream, before a heater, before a stream is passed into a reforming zone, after an effluent stream is recovered from a reforming zone. A molar ratio of cracking inhibitor to hydrocarbons in stream may be between 0.01 and 0.2.Type: ApplicationFiled: June 9, 2016Publication date: December 22, 2016Inventors: Erik Holmgreen, Lin Jin, Mark P. Lapinski, Brian M. Devereux
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Patent number: 9132542Abstract: A power tool has a handle and a body. The handle is provided with a battery. A motor is fixed inside a shell of the tool. An impeller is driven by the motor to create an air current to cool the motor and the battery. A plurality of air outlets are formed in the shell at a position corresponding to the impeller. An air current channel is formed inside the handle and the body and connected to the environment via holes in an enclosure of the battery. A part of the air current passes through the air current channel to cool the battery before reaching the motor.Type: GrantFiled: March 27, 2009Date of Patent: September 15, 2015Assignee: Johnson Electric S.A.Inventors: James Ching Sik Lau, Duncan Yiu Lung Wong, Chang Lin Jin, Aloys J. Liu
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Patent number: 8648515Abstract: An electric motor has a pair of brushes for transferring power to windings of a wound rotor by making sliding contact with a cylindrical commutator. Each brush has a body with a pair of end surfaces, and a contact surface extending between the end surfaces and configured to slidingly contact a cylindrical circumferential surface of the commutator. The extending direction of the contact surface is inclined relative to the axial direction of the commutator, and the contact surface is V-shaped when viewed in the extending direction thereof.Type: GrantFiled: March 2, 2010Date of Patent: February 11, 2014Assignee: Johnson Electric S.A.Inventors: James Ching Sik Lau, Duncan Yiu Lung Wong, Chang Lin Jin, Yuen Tung Louie
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Patent number: 8421380Abstract: A direct current motor includes a stator and a rotor. The rotor has a shaft; a rotor core fixed to the shaft; a commutator fixed to the shaft; and rotor windings wound about poles of the rotor core and terminated on the commutator. The motor also has a common brush and at least two selectable brushes in sliding contact with the commutator; at least two direct current power sources; and a switching device configured to connect the common brush and a selected one of the selectable brushes with predetermined combinations of the power sources to operate the motor in different speed modes.Type: GrantFiled: July 19, 2010Date of Patent: April 16, 2013Assignee: Johnson Electric S.A.Inventors: James Ching Sik Lau, Chang Lin Jin
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Patent number: 8415911Abstract: A power tool comprises a housing, a direct current motor arranged in the housing, a speed reduction mechanism coupled to a shaft of the motor, a tool head driven by the speed reduction mechanism, a first direct current power source, and a switching device. The motor comprises a common brush, a high speed brush and a low speed brush which are in sliding contact with a commutator. The switching device is configured to selectively connect the common brush and the high speed brush with the power source to operate the motor in a high speed mode and to connect the common brush and the low speed brush with the power source to operate the motor in a low speed mode.Type: GrantFiled: July 19, 2010Date of Patent: April 9, 2013Assignee: Johnson Electric S.A.Inventors: James Ching Sik Lau, Chang Lin Jin
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Patent number: 8294328Abstract: Brush gear of a motor has a brush card with a plurality of brushes installed at one side thereof. Each brush is electrically connected with a connector. Two motor terminations provide power to the brushes via the corresponding connectors and at least one wire connects two of the connectors. Each of said two of the connectors has a hole to receive one end of the wire and at least two fingers extends from an edge of the hole inclined toward the axis of the hole, such that when the end of the wire extends through the hole, the fingers are resiliently deformed and grip the wire to prevent withdrawal of the wire from the hole.Type: GrantFiled: August 21, 2009Date of Patent: October 23, 2012Assignee: Johnson Electric S.A.Inventors: James Ching Sik Lau, Duncan Yiu Lung Wong, Chang Lin Jin, Aloys J. Liu
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Patent number: 8125117Abstract: An electric motor includes: a rotor; a stator; and brush gear. The rotor has a shaft, a rotor core and a commutator fitted to the shaft. The rotor core has 5n teeth, n being a positive integer. Two coils are wound on each tooth with each coil being wound about a single tooth and having two ends. The commutator has 10n bars forming a brush contact surface. The stator includes a yoke and a plurality of permanent magnets installed at an inner surface of the yoke and facing the rotor core. The ends of the two coils wound on each tooth are respectively connected to two pairs of adjacent bars and the center line between one pair of the two pairs of adjacent bars and the center line between the other pair of the two pairs of adjacent bars are diametrically opposed.Type: GrantFiled: July 21, 2009Date of Patent: February 28, 2012Assignee: Johnson Electric S.A.Inventors: Jian Zhao, Yong Li, Chang Lin Jin
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Patent number: 8049391Abstract: A multi-pole PMDC motor has brush gear for transferring electrical power from motor terminations to its windings via a commutator. The brush gear comprises a brush card supporting at least four brush assemblies. The brush assemblies are separated into two brush groups with the brush assemblies of each group being electrically connected together by links of flexible wire.Type: GrantFiled: August 21, 2009Date of Patent: November 1, 2011Assignee: Johnson Electric S.A.Inventors: James Ching Sik Lau, Duncan Yiu Lung Wong, Chang Lin Jin, Aloys J. Liu
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Publication number: 20110012550Abstract: A power tool comprises a housing, a direct current motor arranged in the housing, a speed reduction mechanism coupled to a shaft of the motor, a tool head driven by the speed reduction mechanism, a first direct current power source, and a switching device. The motor comprises a common brush, a high speed brush and a low speed brush which are in sliding contact with a commutator. The switching device is configured to selectively connect the common brush and the high speed brush with the power source to operate the motor in a high speed mode and to connect the common brush and the low speed brush with the power source to operate the motor in a low speed mode.Type: ApplicationFiled: July 19, 2010Publication date: January 20, 2011Inventors: James Ching Sik Lau, Chang Lin Jin
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Publication number: 20110012549Abstract: A direct current motor comprising a stator and a rotor. The rotor comprises: a shaft; a rotor core fixed to the shaft; a commutator fixed to the shaft; and rotor windings wound about poles of the rotor core and terminated on the commutator. The motor also has a common brush and at least two selectable brushes in sliding contact with the commutator; at least two direct current power sources; and a switching device configured to connect the common brush and a selected one of the selectable brushes with predetermined combinations of the power sources to operate the motor in different speed modes.Type: ApplicationFiled: July 19, 2010Publication date: January 20, 2011Inventors: James Ching Sik LAU, Chang Lin Jin
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Publication number: 20100225198Abstract: An electric motor has a pair of brushes for transferring power to windings of a wound rotor by making sliding contact with a cylindrical commutator. Each brush has a body with a pair of end surfaces, and a contact surface extending between the end surfaces and configured to slidingly contact a cylindrical circumferential surface of the commutator. The extending direction of the contact surface is inclined relative to the axial direction of the commutator, and the contact surface is V-shaped when viewed in the extending direction thereof.Type: ApplicationFiled: March 2, 2010Publication date: September 9, 2010Inventors: James Ching Sik LAU, Duncan Yiu Lung Wong, Chang Lin Jin, Yuen Tung Louie
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Publication number: 20100071920Abstract: A power tool has a power head 11; a motor 10 configured to drive the power head; a handle 13 at which a switch 30 and a trigger 31 are installed; a force sensor 33 installed at the handle and electrically connected to the switch and configured to output voltage in response to force acted thereon; and a control unit configured to control the motor in response to the output voltage from the force sensor. A method for operating a power tool is also disclosed.Type: ApplicationFiled: September 18, 2009Publication date: March 25, 2010Inventors: James Ching Sik LAU, Duncan Yiu Lung Wong, Chang Lin Jin, Aloys J. Liu
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Publication number: 20100045135Abstract: A multi-pole PMDC motor has brush gear for transferring electrical power from motor terminations to its windings via a commutator. The brush gear comprises a brush card supporting at least four brush assemblies. The brush assemblies are separated into two brush groups with the brush assemblies of each group being electrically connected together by links of flexible wire.Type: ApplicationFiled: August 21, 2009Publication date: February 25, 2010Inventors: James Ching Sik LAU, Duncan Yiu Lung Wong, Chang Lin Jin, Aloys J. Liu
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Publication number: 20100045136Abstract: Brush gear of a motor has a brush card with a plurality of brushes installed at one side thereof. Each brush is electrically connected with a connector. Two motor terminations provide power to the brushes via the corresponding connectors and at least one wire connects two of the connectors. Each of said two of the connectors has a hole to receive one end of the wire and at least two fingers extends from an edge of the hole inclined toward the axis of the hole, such that when the end of the wire extends through the hole, the fingers are resiliently deformed and grip the wire to prevent withdrawal of the wire from the hole.Type: ApplicationFiled: August 21, 2009Publication date: February 25, 2010Inventors: James Ching Sik LAU, Duncan Yiu Lung WONG, Chang Lin JIN, Aloys J. LIU
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Publication number: 20100013361Abstract: An electric motor comprises: a rotor; a stator; and brush gear. The rotor has a shaft, a rotor core and a commutator fitted to the shaft. The rotor core has 5n teeth, n being a positive integer. Two coils are wound in each tooth with each coil being wound about a single tooth and having two ends. The commutator has 10n bars forming a brush contact surface. The stator comprises a yoke and a plurality of permanent magnets installed at an inner surface of the yoke and facing the rotor core. The brush gear has a plurality of carbon brushes arranged to make sliding contact with the brush contact surface of the commutator. The ends of the two coils wound in each tooth are respectively connected to two pairs of adjacent bars and the center line between one pair of the two pairs of adjacent bars and the center line between the other pair of the two pairs of adjacent bars are diametrically opposed.Type: ApplicationFiled: July 21, 2009Publication date: January 21, 2010Inventors: Jian ZHAO, Yong Li, Chang Lin Jin
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Publication number: 20090245958Abstract: An electric drill has a handle, a body and a drill chuck. The handle is provided with a battery and a switch. The body comprising a shell, a motor fixed in the shell and an impeller fixed to an axle or shaft of the motor. The shell is provided with a plurality of air outlets at a position corresponding to the impeller, the impeller being able to rotate with the axle of the motor to produce an air current to cool the motor. An enclosure of the battery is provided with a plurality of through holes. An air current channel is formed inside the handle and the body and connected to the environment via the through holes of the battery enclosure. A heat dissipating device is located in the air current channel and contacts the switch. A part of the cooling air current passes through the air current channel to cool the battery before getting to the motor.Type: ApplicationFiled: March 27, 2009Publication date: October 1, 2009Applicant: JOHNSON ELECTRIC S.A.Inventors: James Ching Sik LAU, Duncan Yiu Lung WONG, Chang Lin JIN, Alloys J. LIU
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Patent number: 7031417Abstract: Clocks are synchronized using a reference clock in two possible ways. One method uses two-way communication between a reference clock and a moving clock. The other method uses one-way communication from the moving clock.Type: GrantFiled: February 27, 2002Date of Patent: April 18, 2006Inventor: Lin Jin
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Patent number: 6826936Abstract: A lock has an outer housing, which has an outer slot at an interior side. An inner housing is received in the outer housing for rotation and has an inner slot and a driving section. Three locking plates are received in the inner housing, each of which has and a recesses at a periphery thereof. A movable pin is moved to be received either in the inner and outer slots or in the inner slot and the recesses. A first tumbler pin is provided at the outer housing and has an end received either in the annular slot or in the position slot. The inner housing is reciprocated between a first position, in which the position pin is moved to a position slot to restrain the inner housing from rotation, and a second position, in which the position pin is moved to an annular slot to release the inner housing.Type: GrantFiled: December 31, 2003Date of Patent: December 7, 2004Inventors: Hsieh Ming-Er, Lin Jin