Patents by Inventor Jiakai Liu
Jiakai Liu 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).
-
Publication number: 20230381854Abstract: A support unit for a roll shaft of a continuous casting guide roll includes a housing having first axial end face, a second axial end face and a through-opening extending from the first axial end face to the second axial end face, a first cover connected to the first axial end face, a first primary isolator arranged radially between the first cover and the roll shaft, and a bearing in the through opening. On a first side of the bearing, a first closed space is partially defined by the bearing, the first cover and the first primary isolator, and the first closed space is pre-filled with a lubricant.Type: ApplicationFiled: May 11, 2023Publication date: November 30, 2023Inventors: Weiguang CAO, Jiakai LIU, Zongkang Xu, Weifei GENG
-
Publication number: 20230330741Abstract: A guide roller for a continuous casting machine includes a roller seat having bearings, a roller shaft mounted for rotation in the roller seat and at least one roller body mounted on the roller shaft and configured to support a billet. A passive optical sensor is mounted to the roller seat and configured to output optical signals, and an optical fiber extends from the passive optical sensor and is configured to convey the optical signals to a processor configured to determine one or more physical parameters of an installation position of the passive optical sensor based on the optical signals.Type: ApplicationFiled: March 21, 2023Publication date: October 19, 2023Inventors: Xing YI, Liang WENG, Jiakai LIU, Weifei GENG, Zongkang XU
-
Patent number: 11754123Abstract: A bearing housing is provided with a cooling channel in at least part of the circumference around the bearing. The cooling channel is provided with a flow guide member at least in part of its flow section to construct a tortuous passage whose flow distance is longer than the corresponding circumferential length of the flow section. On the basis of the above-mentioned bearing housing, the present invention also provides a bearing housing unit, a continuous casting roll line and a continuous casting machine that use the bearing housing. The above-mentioned bearing housing adopts an optimized cooling channel design, which can obtain a better cooling effect without changing other structures of the bearing housing. Therefore, it is particularly suitable for upgrading existing equipment and has a huge cost advantage and a wide range of application prospects.Type: GrantFiled: September 20, 2021Date of Patent: September 12, 2023Assignee: Aktiebolaget SKFInventors: Jiakai Liu, Weiguang Cao, Zongkang Xu, Weifei Geng
-
Publication number: 20230191476Abstract: A real-time monitoring method for continuous casting process and a stability analysis method for continuous casting process includes several sub-processes divided according to the process sequence of the continuous casting process. The real-time monitoring method includes: determining the current sub-process of continuous casting process according slab length data and slab speed data, performing an abnormality diagnosis on the real-time data of key parameters corresponding to the current sub-process, and generating abnormality diagnosis results corresponding to the current sub-process.Type: ApplicationFiled: November 19, 2022Publication date: June 22, 2023Inventors: Gang CHENG, Jiakai LIU
-
Publication number: 20220128095Abstract: A bearing housing is provided with a cooling channel in at least part of the circumference around the bearing. The cooling channel is provided with a flow guide member at least in part of its flow section to construct a tortuous passage whose flow distance is longer than the corresponding circumferential length of the flow section. On the basis of the above-mentioned bearing housing, the present invention also provides a bearing housing unit, a continuous casting roll line and a continuous casting machine that use the bearing housing. The above-mentioned bearing housing adopts an optimized cooling channel design, which can obtain a better cooling effect without changing other structures of the bearing housing. Therefore, it is particularly suitable for upgrading existing equipment and has a huge cost advantage and a wide range of application prospects.Type: ApplicationFiled: September 20, 2021Publication date: April 28, 2022Inventors: Jiakai Liu, Weiguang Cao, Zongkang Xu, Weifei Geng
-
Publication number: 20210331233Abstract: A bearing block unit for supporting a continuous casting roll, including a bearing block and a roller bearing disposed inside the bearing block. The bearing provides an inner ring raceway, an outer ring raceway, and at least one row of rolling bodies disposed between the inner and outer ring raceways. The inner ring raceway is formed by a complete and continuous independent inner ring. The inner ring is fitted on a roll shaft of the continuous casting roll during installation, for the purpose of supporting the continuous casting roll. The outer ring raceway is at least partially formed by processing of an inner surface of an inner hole of the bearing block. The present invention also relates to a continuous casting roll line and a continuous casting machine using the bearing block unit.Type: ApplicationFiled: March 21, 2021Publication date: October 28, 2021Inventors: Jiakai Liu, Xiaofeng Xu
-
Patent number: 9819634Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.Type: GrantFiled: January 6, 2017Date of Patent: November 14, 2017Assignee: Facebook, Inc.Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
-
Patent number: 9811525Abstract: The disclosed techniques provide systems and methods for deletion of end-user messages, message threads, attachments, and/or other message information. More specifically, a key-value store residing in computer memory on the storage system is described. Each value in the key-value store is indexed by a key and structured to include multiple column portions associated with multiple column families. In one embodiment, a deletion column family having an associated retention policy for data stored therein is defined.Type: GrantFiled: March 14, 2013Date of Patent: November 7, 2017Assignee: Facebook, Inc.Inventors: Ruifang Ge, Rahul Narayan Iyer, Jiakai Liu, Kannan Muthukkaruppan, Dylan Nugent, Anshuman Singh, Karthik Ranganathan
-
Patent number: 9800529Abstract: A messaging system that organizes and presents messages to users of the messaging system. The messaging system includes a mailbox module that receives messages and generates conversation threads from the messages. Messages received from different electronic message channels may be aggregated into a common conversation thread. The conversation threads are also organized in a message interface and then presented to a user of the messaging system. The messaging system may include a social networking system that stores social information about users, which can be used to organize the conversation threads. Other features include a multi mode message interface, and a method for adding contextual information to messages.Type: GrantFiled: October 28, 2011Date of Patent: October 24, 2017Assignee: Facebook, Inc.Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein, Drew W. Hamlin, Daniel Hsiao, Kenneth M. Lau, Ross David Bayer, Mark E. Zuckerberg
-
Publication number: 20170118163Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.Type: ApplicationFiled: January 6, 2017Publication date: April 27, 2017Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
-
Patent number: 9590944Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.Type: GrantFiled: May 12, 2016Date of Patent: March 7, 2017Assignee: Facebook, Inc.Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
-
Publication number: 20160261547Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.Type: ApplicationFiled: May 12, 2016Publication date: September 8, 2016Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
-
Patent number: 9356905Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.Type: GrantFiled: December 30, 2014Date of Patent: May 31, 2016Assignee: Facebook, Inc.Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
-
Publication number: 20150120743Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.Type: ApplicationFiled: December 30, 2014Publication date: April 30, 2015Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
-
Patent number: 8984081Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.Type: GrantFiled: July 26, 2013Date of Patent: March 17, 2015Assignee: Facebook, Inc.Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
-
Publication number: 20130311587Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.Type: ApplicationFiled: July 26, 2013Publication date: November 21, 2013Applicant: Facebook, Inc.Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
-
Patent number: 8499048Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.Type: GrantFiled: October 27, 2010Date of Patent: July 30, 2013Assignee: Facebook, Inc.Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein
-
Publication number: 20120143972Abstract: A messaging system that organizes and presents messages to users of the messaging system. The messaging system includes a mailbox module that receives messages and generates conversation threads from the messages. Messages received from different electronic message channels may be aggregated into a common conversation thread. The conversation threads are also organized in a message interface and then presented to a user of the messaging system. The messaging system may include a social networking system that stores social information about users, which can be used to organize the conversation threads. Other features include a multi mode message interface, and a method for adding contextual information to messages.Type: ApplicationFiled: October 28, 2011Publication date: June 7, 2012Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein, Drew W. Hamlin, Daniel Hsiao, Kenneth M. Lau, Ross David Bayer, Mark E. Zuckerberg
-
Publication number: 20120110085Abstract: A messaging system receives a message that is intended for a recipient, who is a user of a social networking system. An object associated with the message is identified based on the message content and/or metadata associated with the message. The messaging system accesses a social networking system database to obtain social information about a relationship between the recipient and the identified object. The message is then indexed using the social information, wherein an entry for the message is stored in a message index based on the social information. This process may be repeated for each received message, and multiple different message indexes may be generated for received messages to track different types of social information. A user interface for viewing messages uses the message index to organize the messages, such as to filter, categorize, and/or sort the messages in the display.Type: ApplicationFiled: October 27, 2010Publication date: May 3, 2012Inventors: Prashant Malik, Jiakai Liu, Andrew G. Bosworth, Joel Benjamin Seligstein