Patents by Inventor Lifeng Wang
Lifeng Wang 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: 11149633Abstract: The present invention provides a system of using compressed air as force source, comprising: compressed air jet engines, which use high/ultra-high pressure compressed air as a jet working medium, a compressed air production/supply device to economically, environmentally and quantitatively produce, store and supply the high/ultra-high pressure compressed air, and a controller. The compressed air jet engines are equipped on an airplane, rocket, submarine, train, or other moving carrier for aviation, aerospace, navigation and/or ground travel, comprising an air tank and air engines for generating power. The air engines comprise a main air engine for generating thrust, and a plurality of auxiliary air engines for reducing the air (or seawater) resistance and the sliding friction with air (or seawater) during the carrier movement to facilitate the speed-rising and energy-saving, and for improving the lift force of airplane wings to facilitate airplane short-range or vertical take-off/landing, etc.Type: GrantFiled: January 16, 2017Date of Patent: October 19, 2021Inventor: Lifeng Wang
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Publication number: 20210307882Abstract: Embodiments of the present application provides a method and a system for evaluating implanting precision of an implant. The method includes: obtaining a second surface model of an oral cavity containing a target implant; obtaining an actual position of the target implant in a first three-dimensional model based on the second surface model, the first three-dimensional model and a first surface model; and obtaining an evaluation result of the implanting precision of the target implant based on the actual position of the target implant in the first three-dimensional model and an predicted position of the target implant in the first three-dimensional model. By means of the method and system according to the embodiments of the present application, the second surface model of the oral cavity containing the target implant is obtained after implantation is completed using an oral digital scanning device to obtain the evaluation result of the implanting precision of an implant of the target implant.Type: ApplicationFiled: May 6, 2019Publication date: October 7, 2021Applicant: BEIJING YAKEBOT TECHNOLOGY CO., LTDInventors: Lifeng WANG, Chen SHEN
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Publication number: 20210290347Abstract: A registration method and an electronic device for visual navigation in dental implant surgery, comprising obtaining a three-dimensional model of a target tooth to be registered, an entity model of the target tooth and a second model of the target tooth, obtaining a position and attitude matrix of the three-dimensional model in a virtual coordinate system according to the coordinates of at least three points on a three-dimensional model of a substrate after the registration of the three-dimensional model in the virtual coordinate system, mounting the entity model of the target tooth onto a registration standard board, obtaining a position and attitude matrix of the entity model in the visual coordinate system according to three optical marks and the points on the entity model corresponding to the three points, and obtaining a correspondence between the virtual coordinate system and the visual coordinate system according to two position and attitude matrices.Type: ApplicationFiled: May 6, 2019Publication date: September 23, 2021Applicant: BEIJING YAKEBOT TECHNOLOGY CO, LTD.Inventors: Lifeng Wang, Hongpeng Liu, Chen Shen, Jianyong Ren
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Publication number: 20210282895Abstract: Disclosed is a dental implant handpiece, comprising an implant handpiece body (1), and a drill bit (2) disposed on the implant handpiece body (1). The implant handpiece body (1) is further provided with an image collector disposed close to the drill bit (2) and configured to acquire images of locations in the vicinity of the drill bit (2) in an oral cavity. In a whole treatment process, a dentist is free of double-handed operation and only needs to hold the dental implant handpiece with one hand. During the treatment process, images near the drill bit (2) are acquired in real time, thus the treatment situation is controlled in real time when each treatment action is executed, and the position and angle of the drill bit (2) may be adjusted at any time according to the images acquired by the image collector.Type: ApplicationFiled: May 28, 2021Publication date: September 16, 2021Inventor: Lifeng WANG
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Publication number: 20210285707Abstract: The disclosure relates to compressors for heat exchange systems, heat exchange systems having such compressors, and methods for controlling operation of compressors. The compressor includes a drive device for driving the compressor and having at least a first and second working conditions. An output power of the drive device under the second working condition is greater than an output power under the first working condition. The compressor has at least one upload/download flow path configured to be opened before the drive device is switched from the first working condition to the second working condition to reduce a suction flow of the compressor until current operating parameters of the compressor reach preset values, after which the switching is performed, and to increase the suction flow until the compressor is in a required working state, after the switching is completed.Type: ApplicationFiled: December 15, 2020Publication date: September 16, 2021Inventors: Jin Wang, LiFeng Wang, Huaxiong Wei
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Publication number: 20210277856Abstract: A fuel injector is disclosed. The fuel injector may have an injector body having a fuel inlet and at least one orifice. The fuel injector may also have a first check valve member. The first check valve member may be selectively movable to fluidly block a first flow of fuel from the fuel inlet to the at least one orifice. The fuel injector may have a second check valve member. The second check valve member may be selectively movable to fluidly block a second flow of fuel from the fuel inlet to the at least one orifice. The fuel injector may also have a control valve assembly. The control valve assembly may be configured to selectively operate either the first check valve or both the first check valve and the second check valve to fluidly connect the fuel inlet and the at least one orifice.Type: ApplicationFiled: May 24, 2021Publication date: September 9, 2021Applicant: Caterpillar Inc.Inventors: Sana Mahmood, Robert M. Campion, Lifeng Wang
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Patent number: 11040337Abstract: A microporous crystalline material having a molar silica to alumina ratio (SAR) ranging from 10 to 15 and a fraction of Al in the zeolite framework of 0.63 or greater is disclosed. A method of selective catalytic reduction of nitrogen oxides in exhaust gas that comprises contacting exhaust gases, typically in the presence of ammonia, urea, an ammonia generating compound, or a hydrocarbon compound, with an article comprising the disclosed microporous crystalline is also disclosed. Further, a method of making the disclosed microporous crystalline material is disclosed.Type: GrantFiled: April 30, 2019Date of Patent: June 22, 2021Assignee: PQ CorporationInventors: Hong-Xin Li, Anton Petushkov, Lifeng Wang, Bjorn Moden
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Publication number: 20210177557Abstract: Disclosed is a denture tray for visual marking and a manufacturing method thereof. The method comprises: establishing a three-dimensional model of a target dentition of a target patient; obtaining a three-dimensional model of a substrate of a denture tray based on the three-dimensional model of the target dentition; providing a through hole at a preset position on the three-dimensional model of the substrate of the denture tray; establishing a three-dimensional model of a fixed connection portion on an outer side surface of the three-dimensional model of the substrate of the denture tray to form a three-dimensional model of the denture tray, wherein the three-dimensional model of the fixed connection portion is integrally connected with the three-dimensional model of the substrate of the denture tray; and manufacturing the denture tray based on the three-dimensional model of the denture tray.Type: ApplicationFiled: May 5, 2019Publication date: June 17, 2021Applicant: BEIJING YAKEBOT TECHNOLOGY CO., LTDInventors: Lifeng WANG, Chen SHEN, Jianyong REN, Hongpeng LIU
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Patent number: 11035332Abstract: A fuel injector is disclosed. The fuel injector may have an injector body having a fuel inlet and at least one orifice. The fuel injector may also have a first check valve member. The first check valve member may be selectively movable to fluidly block a first flow of fuel from the fuel inlet to the at least one orifice. The fuel injector may have a second check valve member. The second check valve member may be selectively movable to fluidly block a second flow of fuel from the fuel inlet to the at least one orifice. The fuel injector may also have a control valve assembly. The control valve assembly may be configured to selectively operate either the first check valve or both the first check valve and the second check valve to fluidly connect the fuel inlet and the at least one orifice.Type: GrantFiled: December 19, 2017Date of Patent: June 15, 2021Assignee: Caterpillar Inc.Inventors: Sana Mahmood, Robert M. Campion, Lifeng Wang
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Patent number: 11031948Abstract: A diagnostic system includes a detection circuit comprising a first impedance, a second impedance, a first input pin, a second input pin, a first output pin and a second output pin. The detection circuit is configured to receive an input signal via the first and the second input pins. The first impedance is configured to electrically couple the first input pin and the first output pin, and the second impedance is configured to electrically couple the first input pin with the second input pin and second output pin. The diagnostic system also includes a communication channel. The diagnostic system further includes an input circuit comprising a third input pin, a fourth input pin and a third output pin. The input circuit is configured to provide, via the third output pin, a voltage signal.Type: GrantFiled: September 28, 2020Date of Patent: June 8, 2021Assignee: BAKER HUGHES OILFIELD OPERATIONS LLCInventors: Lifeng Wang, Hao Wang, Zhili Zhou, Xiaoyan Huang, Ran Ao
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Publication number: 20210123940Abstract: Disclosed is a wind speed sensor based on a flexible inductor and a silicon-based inductor, which relates to a MEMS device and belongs to the field of measurement and testing technologies. The wind speed sensor is a double-layer inductor structure composed of a flexible inductor and a silicon-based inductor. A metal layer of the flexible inductor and a metal layer of the silicon-based inductor face to each other and form, between them, an air cavity sufficient for mutual induction of electromotance. A contact block constituting a measuring port is deposited in the metal layer of the silicon-based inductor. The present invention has a light structure, and implements wind speed detection based on the Bernoulli effect and the coil mutual inductance effect.Type: ApplicationFiled: November 26, 2019Publication date: April 29, 2021Inventors: Zhenxiang YI, Yu WANG, Wenjun DENG, Lifeng WANG, Ming QIN, Qingan HUANG
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Patent number: 10975815Abstract: A fuel system for an internal combustion engine includes a fuel system, a valve train, and a fuel injector including a cam actuated plunger. The fuel injector has a noise suppressor fluidly connecting a plunger cavity to each of a spill passage and a nozzle supply passage in the fuel injector. The noise suppressor has an inlet configuration forming a fuel admission flow area to the plunger cavity, and an outlet configuration forming a fuel discharge flow area. The fuel discharge flow area is smaller than the fuel admission flow area, and the noise suppressor adjusts to the outlet configuration to throttle discharging of fuel from the plunger cavity to limit valve train noise.Type: GrantFiled: May 21, 2018Date of Patent: April 13, 2021Assignee: Caterpillar Inc.Inventors: Wade James Robel, Thomas Jeffrey Crowell, Lifeng Wang
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Publication number: 20210008534Abstract: An apparatus of coating a filter substrate comprising a plurality of channels and an apparatus is disclosed. The apparatus comprises: (i) a containment means for receiving a pre-determined amount of the liquid; and (ii) a liquid dosing head arranged to dispense the pre-determined amount of the liquid into the containment means over an upper end of the filter substrate. The containment means is locatable at an upper end of the filter substrate; and the liquid dosing head comprises a plurality of apertures for dispensing the liquid onto the upper end of the filter substrate.Type: ApplicationFiled: September 28, 2020Publication date: January 14, 2021Inventors: Kaneshalingham ARULRAJ, Jenita BHANTOO, Jamie SAVAGE, Andrew SMITH, Lifeng WANG, Daisuke YOKOTA
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Patent number: 10830194Abstract: A fuel system is disclosed for use with an engine. The fuel system may have a common rail, a first type of fuel injector fluidly connected to the common rail, and a second type of fuel injector fluidly connected to the common rail. The second type of fuel injector may include a pumping portion having a bore formed therein, and a plunger reciprocatingly disposed in the bore. The second type of fuel injector may also include an accumulator portion fluidly connected to the common rail and configured to receive fuel pushed from the bore of the pumping portion by the plunger, a nozzle portion, and a valve portion fluidly connecting the pumping, nozzle, and accumulator portions.Type: GrantFiled: October 7, 2016Date of Patent: November 10, 2020Assignee: Caterpillar Inc.Inventors: Scott F. Shafer, Dennis H. Gibson, Zhenyu (Jason) Li, Robert Michael Campion, Alan Ray Stockner, Satya Naga Deepak Pillarisetti, George Kodikulam Joseph, Lifeng Wang
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Patent number: 10814318Abstract: The disclosure describes a method of coating a filter substrate comprising a plurality of channels and an apparatus therefor. The method comprises the steps of introducing a pre-determined amount of a liquid into a containment means at an upper end of the filter substrate; and, coating the channels having open ends at the upper end of the filter substrate with the liquid from the containment means.Type: GrantFiled: March 24, 2015Date of Patent: October 27, 2020Assignee: Johnson Matthey Public Limited CompanyInventors: Kaneshalingham Arulraj, Jenita Bhantoo, Jamie Savage, Andrew Smith, Lifeng Wang, Daisuke Yokota
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Publication number: 20200325820Abstract: The present invention provides a system of using compressed air as force source, comprising: compressed air jet engines, which use high/ultra-high pressure compressed air as a jet working medium, a compressed air production/supply device to economically, environmentally and quantitatively produce, store and supply the high/ultra-high pressure compressed air, and a controller. The compressed air jet engines are equipped on an airplane, rocket, submarine, train, or other moving carrier for aviation, aerospace, navigation and/or ground travel, comprising an air tank and air engines for generating power. The air engines comprise a main air engine for generating thrust, and a plurality of auxiliary air engines for reducing the air (or seawater) resistance and the sliding friction with air (or seawater) during the carrier movement to facilitate the speed-rising and energy-saving, and for improving the lift force of airplane wings to facilitate airplane short-range or vertical take-off/landing, etc.Type: ApplicationFiled: January 16, 2017Publication date: October 15, 2020Inventor: Lifeng WANG
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Patent number: 10778360Abstract: Apparatus and associated methods relate to high accuracy timestamp support by controlling a first phase relationship between an outbound signal transmitted by a transmitting circuit and a local reference clock signal, measuring a second phase difference between a received data signal and the local reference signal, and measuring a third phase difference between a received time of day (RXTOD) signal and the local reference signal. In an illustrative example, a state machine circuit may be operated to control the first phase relationship, a phase measuring circuit may be configured to measure the second phase difference and the third phase difference. By comparing results obtained from phase control and phase measurement, the time of day (TOD) of each transmitted/received bit can be calculated at 1-bit level accuracy and achieve 1-bit level accuracy in the timestamp.Type: GrantFiled: December 6, 2018Date of Patent: September 15, 2020Assignee: XILINX, INC.Inventors: Lifeng Wang, Jinhua Li, Yong Hu
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Patent number: 10773251Abstract: The invention provides an exhaust gas cleaning oxidation catalyst and in particular to an oxidation catalyst for cleaning the exhaust gas discharged from internal combustion engines of compression ignition type (particularly diesel engines). The invention further relates to a catalysed substrate monolith comprising an oxidising catalyst on a substrate monolith for use in treating exhaust gas emitted from a lean-burn internal combustion engine. In particular, the invention relates to a catalysed substrate monolith comprising a first washcoat coating and a second washcoat coating, wherein the second washcoat coating is disposed in a layer above the first washcoat coating.Type: GrantFiled: August 6, 2019Date of Patent: September 15, 2020Assignee: Johnson Matthey Public Limited CompanyInventors: Philip Gerald Blakeman, Gavin Michael Brown, Sougato Chatterjee, Andrew Francis Chiffey, Jane Gast, Paul Richard Phillips, Hanako Oyamada, Raj Rao Rajaram, Satoshi Sumiya, Andrew Peter Walker, Lifeng Wang
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Patent number: 10760513Abstract: A method of increasing parasitic load on an internal combustion engine includes injecting a fuel into a combustion chamber of an active cylinder of the internal combustion engine, combusting the injected fuel in the combustion chamber of the active cylinder, and determining that increasing a temperature of an exhaust aftertreatment device is required. The method includes increasing a parasitic load on the internal combustion engine by deactivating a cylinder, wherein no fuel is injected in the deactivated cylinder for a combustion cycle of the internal combustion engine, and further increasing the parasitic load by pulsing a spill valve member of a spill valve of a fuel injector in the deactivated cylinder between a fully closed position and an at least partially open position.Type: GrantFiled: April 19, 2019Date of Patent: September 1, 2020Assignee: Caterpillar Inc.Inventors: Spencer Huhn, Wade J. Robel, Lifeng Wang, Dana Coldren, Kevin Weiss
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Publication number: 20200197916Abstract: A metal-containing chabazite zeolite, which has an FTIR peak area ratio between the peak at 900-1300 cm?1 (Si—O—Si asymmetric stretch) and the peak at 765-845 cm?1 (˜805 cm?1 is Si—O—Si symmetric stretch) of at least 55. A method for preparing metal-containing CHA zeolites with high SCR activity at low reaction temperatures from alkali cation-free reaction mixtures that contain the three OSDA structures: metal-polyamine, N,N,N-trimethyl-1-adamantyl ammonium (TMAda+) and TMAOH. The metal-containing CHA zeolites produced by the disclosed method can be identified by XRD, FTIR spectroscopy, FT-VIS spectroscopy, and scanning electron microscopy. A method of selective catalytic reduction of NOx in exhaust gas using the material described herein is also disclosed.Type: ApplicationFiled: December 20, 2019Publication date: June 25, 2020Applicant: PQ CORPORATIONInventors: Lifeng WANG, Bjorn MODEN, James Thomas HUGHES, Hong-XIN LI