Patents by Inventor Zheng Xi
Zheng Xi 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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Publication number: 20240125256Abstract: A rocker arm mechanism of an engine, a system and a method for two-stroke engine brake are provided. The rocker arm mechanism includes a first rocker arm, a second rocker arm and a connection mechanism. One end of the first rocker arm and one end of the second rocker arm is rotatably connected to a shaft, the other end of the first rocker arm is close to a valve of the engine, while the other end of the second rocker arm is close to a cam. The connection mechanism includes a connecting piston and a linkage mechanism. The connecting piston is disposed in the first rocker arm or the second rocker arm, the linkage mechanism is rotatably connected to one end of the connecting piston. The rocker arm mechanism may be used for engine cylinder deactivation and engine brake.Type: ApplicationFiled: January 26, 2022Publication date: April 18, 2024Inventors: Rujie ZHU, Baoliang XING, Zheng XI, Zhou YANG
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Patent number: 11786880Abstract: A preparation method of the microcapsules for low-temperature well cementation to be used to control cement hydration heat includes: (S1) a shell material, and added into deionized water, then the resultant mixture being stirred in a thermostat water bath so as to completely dissolve it into a homogeneous and stable shell material solution; (S2) a core material and an emulsifier being put into a three-necked flask and stirred in a thermostat water bath so as to uniformly emulsify and disperse them, forming a stable oil-in-water core material emulsion, while adjusting the pH value of the emulsion with a pH adjuster; (S3) the three-necked flask containing the core material emulsion being transferred to a water bath, and then the shell material solution being dropwise added into it with stirring, after reacting, a solid-liquid mixture being poured out so as to naturally cool it to room temperature.Type: GrantFiled: May 20, 2022Date of Patent: October 17, 2023Assignees: SOUTHWEST PETROLEUM UNIVERSITY, YAO BAI SPECIAL CEMENT TECHNOLOGY RESEARCH AND DEVELOPMENT CO., LTD.Inventors: Chunmei Zhang, Jingxuan Cai, Jia Wang, Xiaowei Cheng, Kaiqiang Liu, Ping Wang, Hao Xu, Bibo Dai, Baoyang Ke, Xiaoyang Guo, Mingze Li, Song Yang, Zheng Xi
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Patent number: 11739667Abstract: An engine valve actuating apparatus includes a housing that contains an activation piston bore and an actuation piston bore. The activation piston is disposed in the activation piston bore and configured to actuate an engine valve. The actuation piston includes at least one side surface that is in sliding contact with the inner surface of the actuation piston bore so that the actuation piston can slide within the actuation piston bore. The actuation piston also has a guide mechanism, which guides the first and second links to move in a plane between the first position and the second position. At least a part of the guide mechanism is below at least a part of the at least one side surface of the actuation piston.Type: GrantFiled: August 19, 2020Date of Patent: August 29, 2023Assignee: SHANGHAI UNIVERSOON AUTOTECH CO., LTD.Inventors: Zheng Xi, Rujie Zhu, Zhiyang Lv, Tao Wei, Zhen Zhang, Chunling Zeng, Yong Xi
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Publication number: 20220395796Abstract: A preparation method of the microcapsules for low-temperature well cementation to be used to control cement hydration heat includes: (S1) a shell material, and added into deionized water, then the resultant mixture being stirred in a thermostat water bath so as to completely dissolve it into a homogeneous and stable shell material solution; (S2) a core material and an emulsifier being put into a three-necked flask and stirred in a thermostat water bath so as to uniformly emulsify and disperse them, forming a stable oil-in-water core material emulsion, while adjusting the pH value of the emulsion with a pH adjuster; (S3) the three-necked flask containing the core material emulsion being transferred to a water bath, and then the shell material solution being dropwise added into it with stirring, after reacting, a solid-liquid mixture being poured out so as to naturally cool it to room temperature.Type: ApplicationFiled: May 20, 2022Publication date: December 15, 2022Inventors: Xiaowei Cheng, Jingxuan Cai, Mingze Li, Chunmei Zhang, Jia Wang, Song Yang, Zheng Xi, Kaiqiang Liu, Ping Wang, Hao Xu, Baoyang Ke, Xiaoyang Guo
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Publication number: 20220333512Abstract: An engine valve actuating apparatus includes a housing that contains an activation piston bore and an actuation piston bore. The activation piston is disposed in the activation piston bore and configured to actuate an engine valve. The actuation piston includes at least one side surface that is in sliding contact with the inner surface of the actuation piston bore so that the actuation piston can slide within the actuation piston bore. The actuation piston also has a guide mechanism, which guides the first and second links to move in a plane between the first position and the second position. At least a part of the guide mechanism is below at least a part of the at least one side surface of the actuation piston.Type: ApplicationFiled: August 19, 2020Publication date: October 20, 2022Inventors: Zheng XI, Rujie ZHU, Zhiyang LV, Tao WEI, Zhen ZHANG, Chunling ZENG, Yong XI
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Patent number: 11120439Abstract: A server includes a memory and a message processor. The memory stores a data record that includes a credential stored in association with an access restriction indicator, and further includes a cryptographic key. The processor is configured to receive from a network device an access request that includes the credential and a token. The token includes a first data layer and a second data layer that incorporates the first data layer and is encrypted with the cryptographic key. The processor is configured to determine that, prior to the access request, the credential was stored in the data record in association with the access restriction indicator; recover the first data layer from the token by (i) locating the cryptographic key in the data record, and (ii) decrypting the second encrypted data layer with the cryptographic key. The processor is configured to provide the network device with the first data layer.Type: GrantFiled: December 23, 2019Date of Patent: September 14, 2021Assignee: The Toronto-Dominion BankInventors: Jonathan K. Barnett, Roy D'Souza, John Jong Suk Lee, Christopher Arthur Holland McAlpine, Aleksandar Roskic, Douglas Edward William Watson, Zheng Xi, Shannon Rose Yeoman
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Publication number: 20200134617Abstract: A server includes a memory and a message processor. The memory stores a data record that includes a credential stored in association with an access restriction indicator, and further includes a cryptographic key. The processor is configured to receive from a network device an access request that includes the credential and a token. The token includes a first data layer and a second data layer that incorporates the first data layer and is encrypted with the cryptographic key. The processor is configured to determine that, prior to the access request, the credential was stored in the data record in association with the access restriction indicator; recover the first data layer from the token by (i) locating the cryptographic key in the data record, and (ii) decrypting the second encrypted data layer with the cryptographic key. The processor is configured to provide the network device with the first data layer.Type: ApplicationFiled: December 23, 2019Publication date: April 30, 2020Inventors: Jonathan K. Barnett, Roy D'Souza, John Jong Suk Lee, Christopher Arthur Holland McAlpine, Aleksandar Roskic, Doiuglas Edward William Watson, Zheng Xi, Shannon Rose Yeoman
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Patent number: 10626764Abstract: A single valve compression release bridge brake is provided. The single valve compression release bridge brake includes a braking piston (160) integrated into an inner end of a valve bridge (400) which is located under a rocker arm (210) of an engine. The braking piston (160) is slidably disposed in a braking piston bore (190) opened downwards from the inner end of the valve bridge (400). The lower end of the braking piston (160) is connected to the inner exhaust valve (3001). Oil is supplied to the braking piston bore (190) in the valve bridge (400). The inner end of the valve bridge (400) above the braking piston (160) is pushed upwards against the rocker arm (210) by oil pressure, and a hydraulic linkage is formed between the braking piston (160) and the valve bridge (400).Type: GrantFiled: April 5, 2019Date of Patent: April 21, 2020Assignee: Shanghai Universoon Auto Parts Co., Ltd.Inventors: Yong Xi, Zheng Xi
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Patent number: 10552831Abstract: A message processing server includes a memory and a message processor. The message processor is configured to receive first data; save an identifier in association with a first-layer access restriction indicator and a first key, generate a first encrypted layer by encrypting the first data with the first key, and generate a token from the identifier and the first encrypted layer; receive second data and the token; recover the identifier and the first encrypted layer from the token; confirm that the identifier was saved in the memory in association with the first indicator; save the identifier in association with a second-layer access restriction indicator and a second key, generate a second encrypted layer by encrypting the first encrypted layer and the second data with the second key, and regenerate the token from the identifier and the second encrypted layer.Type: GrantFiled: October 3, 2016Date of Patent: February 4, 2020Assignee: The Toronto-Dominion BankInventors: Jonathan K. Barnett, Roy D'Souza, John Jong Suk Lee, Christopher Arthur Holland McAlpine, Aleksandar Roskic, Douglas Edward William Watson, Zheng Xi, Shannon Rose Yeoman
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Publication number: 20190257228Abstract: A single valve compression release bridge brake is provided. The single valve compression release bridge brake includes a braking piston (160) integrated into an inner end of a valve bridge (400) which is located under a rocker arm (210) of an engine. The braking piston (160) is slidably disposed in a braking piston bore (190) opened downwards from the inner end of the valve bridge (400). The lower end of the braking piston (160) is connected to the inner exhaust valve (3001). Oil is supplied to the braking piston bore (190) in the valve bridge (400). The inner end of the valve bridge (400) above the braking piston (160) is pushed upwards against the rocker arm (210) by oil pressure, and a hydraulic linkage is formed between the braking piston (160) and the valve bridge (400).Type: ApplicationFiled: April 5, 2019Publication date: August 22, 2019Inventors: Yong Xi, Zheng Xi
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Patent number: 10329972Abstract: A single valve compression release bridge brake is provided. The single valve compression release bridge brake includes a braking piston (160) integrated into an inner end of a valve bridge (400) which is located under a rocker arm (210) of an engine. The braking piston (160) is slidably disposed in a braking piston bore (190) opened downwards from the inner end of the valve bridge (400). The lower end of the braking piston (160) is connected to the inner exhaust valve (3001). Oil is supplied to the braking piston bore (190) in the valve bridge (400). The inner end of the valve bridge (400) above the braking piston (160) is pushed upwards against the rocker arm (210) by oil pressure, and a hydraulic linkage is formed between the braking piston (160) and the valve bridge (400).Type: GrantFiled: June 8, 2015Date of Patent: June 25, 2019Assignee: Shanghai Universoon Auto Parts Co., Ltd.Inventors: Yong Xi, Zheng Xi
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Publication number: 20170134168Abstract: A message processing server includes a memory and a message processor. The message processor is configured to receive first data; save an identifier in association with a first-layer access restriction indicator and a first key, generate a first encrypted layer by encrypting the first data with the first key, and generate a token from the identifier and the first encrypted layer; receive second data and the token; recover the identifier and the first encrypted layer from the token; confirm that the identifier was saved in the memory in association with the first indicator; save the identifier in association with a second-layer access restriction indicator and a second key, generate a second encrypted layer by encrypting the first encrypted layer and the second data with the second key, and regenerate the token from the identifier and the second encrypted layer.Type: ApplicationFiled: October 3, 2016Publication date: May 11, 2017Inventors: Jonathan K. Barnett, Roy D'Souza, John Jong Suk Lee, Christopher Arthur Holland McAlpine, Aleksandar Roskic, Douglas Edward William Watson, Zheng Xi, Shannon Rose Yeoman