Patents by Inventor James Lawrence Robb
James Lawrence Robb 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: 20230258229Abstract: A hydrodynamic bearing in the form of a flex pad bearing includes configurations structured to change a bearing characteristic. One form of the bearing includes a nonlinear back wall that includes a circular arc and a transition, where the back wall extends radially outward of a ligament. The bearing can include an opening for the deposit of a weighted mass, wherein the opening can threadingly receive a threaded weighted mass. In one form a sidewall that includes the back wall segment can have an average outer radius which determines a thickness of the flex pads.Type: ApplicationFiled: April 25, 2023Publication date: August 17, 2023Inventors: James Lawrence Robb, Andrew J. Austin, Patrick Lynah
-
Patent number: 11635108Abstract: A hydrodynamic bearing in the form of a flex pad bearing includes configurations structured to change a bearing characteristic. One form of the bearing includes a nonlinear back wall that includes a circular arc and a transition, where the back wall extends radially outward of a ligament. The bearing can include an opening for the deposit of a weighted mass, wherein the opening can threadingly receive a threaded weighted mass. In one form a sidewall that includes the back wall segment can have an average outer radius which determines a thickness of the flex pads.Type: GrantFiled: June 28, 2022Date of Patent: April 25, 2023Assignee: Ingersoll-Rand Industrial U.S., Inc.Inventors: James Lawrence Robb, Andrew J. Austin, Patrick Lynah
-
Publication number: 20220325746Abstract: A hydrodynamic bearing in the form of a flex pad bearing includes configurations structured to change a bearing characteristic. One form of the bearing includes a nonlinear back wall that includes a circular arc and a transition, where the back wall extends radially outward of a ligament. The bearing can include an opening for the deposit of a weighted mass, wherein the opening can threadingly receive a threaded weighted mass. In one form a sidewall that includes the back wall segment can have an average outer radius which determines a thickness of the flex pads. A ratio of the pad between the thickness and diameter of a central passage can be set to achieve the change in bearing characteristic.Type: ApplicationFiled: June 28, 2022Publication date: October 13, 2022Inventors: James Lawrence Robb, Andrew J. Austin, Patrick Lynah
-
Patent number: 11371552Abstract: A hydrodynamic bearing in the form of a flex pad bearing includes configurations structured to change a bearing characteristic. One form of the bearing includes a nonlinear back wall that includes a circular arc and a transition, where the back wall extends radially outward of a ligament. The bearing can include an opening for the deposit of a weighted mass, wherein the opening can threadingly receive a threaded weighted mass. In one form a sidewall that includes the back wall segment can have an average outer radius which determines a thickness of the flex pads.Type: GrantFiled: March 16, 2021Date of Patent: June 28, 2022Assignee: INGERSOLL-RAND INDUSTRIAL U.S., INC.Inventors: James Lawrence Robb, Andrew J. Austin, Patrick Lynah
-
Publication number: 20220074317Abstract: A rotor shaft for a high speed motor that has a coating that is secured to a shaft body. The coating and the shaft body are formed from dissimilar materials. More specifically, the coating may be an alloy material, such as, for example, a copper alloy, while the shaft body may be a steel material. According to certain embodiments, the alloy material of the coating may be secured to at least a portion of a rotor body blank in a solution treated condition via a low temperature welding procedure. Additionally, the coating may be hardened, such as for example, through the use of an age hardening process. The coating and the rotor body blank may be machined together to form the rotor shaft. According to certain embodiments, such machining may configure the rotor shaft for use with a turbo-compressor that is configured for air compression.Type: ApplicationFiled: September 21, 2021Publication date: March 10, 2022Inventors: James Lawrence Robb, Juha Tuomas Saari, George C. Hansen
-
Patent number: 11125107Abstract: A rotor shaft for a high speed motor that has a coating that is secured to a shaft body. The coating and the shaft body are formed from dissimilar materials. More specifically, the coating may be an alloy material, such as, for example, a copper alloy, while the shaft body may be a steel material. According to certain embodiments, the alloy material of the coating may be secured to at least a portion of a rotor body blank in a solution treated condition via a low temperature welding procedure. Additionally, the coating may be hardened, such as for example, through the use of an age hardening process. The coating and the rotor body blank may be machined together to form the rotor shaft. According to certain embodiments, such machining may configure the rotor shaft for use with a turbo-compressor that is configured for air compression.Type: GrantFiled: April 8, 2019Date of Patent: September 21, 2021Assignee: INGERSOLL-RAND INDUSTRIAL U.S. INC.Inventors: James Lawrence Robb, Juha Tuomas Saari, George C. Hansen
-
Publication number: 20210199154Abstract: A hydrodynamic bearing in the form of a flex pad bearing includes configurations structured to change a bearing characteristic. One form of the bearing includes a nonlinear back wall that includes a circular arc and a transition, where the back wall extends radially outward of a ligament. The bearing can include an opening for the deposit of a weighted mass, wherein the opening can threadingly receive a threaded weighted mass. In one form a sidewall that includes the back wall segment can have an average outer radius which determines a thickness of the flex pads. A ratio of the pad between the thickness and diameter of a central passage can be set to achieve the change in bearing characteristic.Type: ApplicationFiled: March 16, 2021Publication date: July 1, 2021Inventors: James Lawrence Robb, Andrew J. Austin, Patrick Lynah
-
Patent number: 10948009Abstract: A hydrodynamic bearing in the form of a flex pad bearing includes configurations structured to change a bearing characteristic. One form of the bearing includes a nonlinear back wall that includes a circular arc and a transition, where the back wall extends radially outward of a ligament. The bearing can include an opening for the deposit of a weighted mass, wherein the opening can threadingly receive a threaded weighted mass. In one form a sidewall that includes the back wall segment can have an average outer radius which determines a thickness of the flex pads.Type: GrantFiled: December 10, 2019Date of Patent: March 16, 2021Assignee: Ingersoll-Rand Industrial U.S., Inc.Inventors: James Lawrence Robb, Andrew J. Austin, Patrick Lynah
-
Publication number: 20200072079Abstract: A rotor shaft for a high speed motor that has a coating that is secured to a shaft body. The coating and the shaft body are formed from dissimilar materials. More specifically, the coating may be an alloy material, such as, for example, a copper alloy, while the shaft body may be a steel material. According to certain embodiments, the alloy material of the coating may be secured to at least a portion of a rotor body blank in a solution treated condition via a low temperature welding procedure. Additionally, the coating may be hardened, such as for example, through the use of an age hardening process. The coating and the rotor body blank may be machined together to form the rotor shaft. According to certain embodiments, such machining may configure the rotor shaft for use with a turbo-compressor that is configured for air compression.Type: ApplicationFiled: April 8, 2019Publication date: March 5, 2020Inventors: James Lawrence Robb, Juha Tuomas Saari, George C. Hansen
-
Patent number: 10514210Abstract: An exemplary fin-tube construction includes an outer tube, an inner tube disposed within the outer tube, and a plurality of fins extending from an outer surface of the inner tube to an inner surface of the outer tube. The outer tube includes an inner portion and an outer portion. The inner portion, the inner tube, and the fins are formed at least primarily of a first material. The outer portion is formed at least primarily of a second material.Type: GrantFiled: December 18, 2015Date of Patent: December 24, 2019Assignee: Ingersoll-Rand CompanyInventors: James Lawrence Robb, George C. Hansen, Tulsi Patel
-
Patent number: 10253649Abstract: A rotor shaft for a high speed motor that has a coating that is secured to a shaft body. The coating and the shaft body are formed from dissimilar materials. More specifically, the coating may be an alloy material, such as, for example, a copper alloy, while the shaft body may be a steel material. According to certain embodiments, the alloy material of the coating may be secured to at least a portion of a rotor body blank in a solution treated condition via a low temperature welding procedure. Additionally, the coating may be hardened, such as for example, through the use of an age hardening process. The coating and the rotor body blank may be machined together to form the rotor shaft. According to certain embodiments, such machining may configure the rotor shaft for use with a turbo-compressor that is configured for air compression.Type: GrantFiled: December 17, 2015Date of Patent: April 9, 2019Assignee: Ingersoll-Rand CompanyInventors: James Lawrence Robb, Juha Tuomas Saari, George C. Hansen
-
Publication number: 20160186603Abstract: A rotor shaft for a high speed motor that has a coating that is secured to a shaft body. The coating and the shaft body are formed from dissimilar materials. More specifically, the coating may be an alloy material, such as, for example, a copper alloy, while the shaft body may be a steel material. According to certain embodiments, the alloy material of the coating may be secured to at least a portion of a rotor body blank in a solution treated condition via a low temperature welding procedure. Additionally, the coating may be hardened, such as for example, through the use of an age hardening process. The coating and the rotor body blank may be machined together to form the rotor shaft. According to certain embodiments, such machining may configure the rotor shaft for use with a turbo-compressor that is configured for air compression.Type: ApplicationFiled: December 17, 2015Publication date: June 30, 2016Inventors: James Lawrence Robb, Juha Tuomas Saari, George C. Hansen
-
Publication number: 20160187072Abstract: An exemplary fin-tube construction includes an outer tube, an inner tube disposed within the outer tube, and a plurality of fins extending from an outer surface of the inner tube to an inner surface of the outer tube. The outer tube includes an inner portion and an outer portion. The inner portion, the inner tube, and the fins are formed at least primarily of a first material. The outer portion is formed at least primarily of a second material.Type: ApplicationFiled: December 18, 2015Publication date: June 30, 2016Inventors: James Lawrence Robb, George C. Hansen, Tulsi Patel