Patents by Inventor Brandon T. Kovach
Brandon T. Kovach 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: 20230017990Abstract: A fuel delivery system for a gas turbine engine is disclosed which includes a continuously variable drive assembly having a driving portion operatively associated with a gearbox of the gas turbine and a driven portion operatively associated with a fuel pump of the gas turbine, and a governor for controlling a drive ratio of the drive assembly to vary fuel pump flow performance over a range of engine operating conditions.Type: ApplicationFiled: August 9, 2022Publication date: January 19, 2023Applicant: Hamilton Sundstrand CorporationInventors: Richard J. Carpenter, Lubomir A. Ribarov, Brandon T. Kovach, Zachary Allen Ray Le Duc, Aaron F. Rickis, Charles E. Reuter, Michael D. Schelonka, William D. Hodge, Christopher J. Davis
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Publication number: 20200340411Abstract: A fuel delivery system for a gas turbine engine is disclosed which includes a continuously variable drive assembly having a driving portion operatively associated with a gearbox of the gas turbine and a driven portion operatively associated with a fuel pump of the gas turbine, and a governor for controlling a drive ratio of the drive assembly to vary fuel pump flow performance over a range of engine operating conditions.Type: ApplicationFiled: April 29, 2019Publication date: October 29, 2020Inventors: Richard J. Carpenter, Lubomir A. Ribarov, Brandon T. Kovach, Zachary Allen Ray Le Duc, Aaron F. Rickis, Charles E. Reuter, Michael D. Schelonka, William D. Hodge, Christopher J. Davis
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Patent number: 10119551Abstract: An impeller spinner for a fuel pump can include a head and a shank. The head can have a base at one end and a tip at an opposite end. The shank can have a body portion nearest the head with a first diameter and a fastener portion adjacent to the body portion at an end opposite the head with a second diameter.Type: GrantFiled: August 7, 2015Date of Patent: November 6, 2018Assignee: Hamilton Sundstrand CorporationInventors: Brandon T. Kovach, Joseph Wetch, Adrian L. Stoicescu, Michael F. Cass
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Patent number: 9890813Abstract: A gear pump includes a drive gear mounted to a first gear shaft, a driven gear meshable with the drive gear, a plurality of journal bearings, and a first porting path. The first porting path is adapted to provide high pressure fluid communication from a discharge of the gear pump to a first hybrid pad location for a first journal bearing selected from the plurality of journal bearings, the first hybrid pad location circumferentially adjacent to a first fluid film location. Each location is disposed annularly between an inner surface of the first journal bearing, and an outer surface of the first gear shaft or second gear shaft corresponding to the first journal bearing.Type: GrantFiled: November 3, 2014Date of Patent: February 13, 2018Assignee: Hamilton Sundstrand CorporationInventors: Brandon T. Kovach, Steven A. Heitz
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Patent number: 9726221Abstract: A journal bearing assembly includes a first journal bearing disposed about a longitudinal end of a gear shaft and spaced a first distance from a first axial gear face. A first fluid film location and a first hybrid pad location are annularly between an inner surface of the first journal bearing and an outer surface of the gear shaft. The first hybrid pad location circumferentially adjacent to the first fluid film location has a minimum leading edge angular location of at least about 31.0° measured relative to a first bearing flat. A first porting path provides high pressure fluid communication from a location outside the first journal bearing to the first fluid film location at or adjacent to the first hybrid pad location.Type: GrantFiled: November 3, 2014Date of Patent: August 8, 2017Assignee: Hamilton Sundstrand CorporationInventors: Brandon T. Kovach, Steven A. Heitz
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Publication number: 20170037863Abstract: An impeller spinner for a fuel pump can include a head and a shank. The head can have a base at one end and a tip at an opposite end. The shank can have a body portion nearest the head with a first diameter and a fastener portion adjacent to the body portion at an end opposite the head with a second diameter.Type: ApplicationFiled: August 7, 2015Publication date: February 9, 2017Inventors: Brandon T. Kovach, Joseph Wetch, Adrian L. Stoicescu, Michael F. Cass
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Patent number: 9562502Abstract: A impeller for a centrifugal pump has an inducer section. The inducer section has first and second pluralities of blades, each having a plurality of polygonal cross-sections defined by a plurality of vertices. The pluralities of vertices are defined by tables of vertex locations. A method of making a centrifugal pump includes forming an impeller that has an inducer section, as described above, and an impeller section. The impeller is fluidly connected downstream of the inducer section and has third, fourth, and fifth pluralities of blades, each having a plurality of polygonal cross-sectional areas defined by a plurality of vertices. The pluralities of vertices are defined by tables of vertex locations.Type: GrantFiled: October 6, 2014Date of Patent: February 7, 2017Assignee: Hamilton Sundstrand CorporationInventors: Adrian L. Stoicescu, Brandon T. Kovach
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Patent number: 9546625Abstract: A housing has walls that define a volute passage and a diffuser passage fluidly connected to the volute passage. The volute passage has a first subsection and a second subsection, each having cross-sectional areas defined by tabular data. A centrifugal pump has a rotor and a housing, the housing having walls defining a volute passage and a diffuser passage fluidly connected to the volute passage. The volute passage has a first subsection and a second subsection, each having cross-sectional areas defined by tabular data.Type: GrantFiled: October 6, 2014Date of Patent: January 17, 2017Assignee: Hamilton Sundstrand CorporationInventors: Adrian L. Stoicescu, Brandon T. Kovach
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Patent number: 9488174Abstract: One embodiment includes a gear pump with a driven gear, a gear shaft passing through the driven gear, and a stationary journal bearing. Also included is a fluid film, between a surface of the stationary journal bearing and a surface of the gear shaft, and a hybrid pad on the stationary journal bearing. The hybrid pad has a minimum leading edge angular location on the stationary journal bearing of 41.5° and a maximum trailing edge angular location on the stationary journal bearing of 54.5°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.Type: GrantFiled: June 6, 2014Date of Patent: November 8, 2016Assignee: Hamilton Sundstrand CorporationInventors: Brandon T. Kovach, Steven A. Heitz
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Patent number: 9488171Abstract: One embodiment includes a gear pump with a drive gear, a gear shaft passing through the drive gear, and a stationary journal bearing. Also included is a fluid film, between a surface of the stationary journal bearing and a surface of the gear shaft, and a hybrid pad on the stationary journal bearing. The hybrid pad has a minimum leading edge angular location on the stationary journal bearing of 29.5° and a maximum trailing edge angular location on the stationary journal bearing of 42.5°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.Type: GrantFiled: June 6, 2014Date of Patent: November 8, 2016Assignee: Hamilton Sundstrand CorporationInventors: Brandon T. Kovach, Steven A. Heitz
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Patent number: 9488170Abstract: One embodiment includes a gear pump with a driven gear, a gear shaft passing through the driven gear, and a pressure loaded journal bearing. Also included is a fluid film, between a surface of the pressure loaded journal bearing and a surface of the gear shaft, and a hybrid pad on the pressure loaded journal bearing. The hybrid pad has a minimum leading edge angular location on the pressure loaded journal bearing of 41.5° and a maximum trailing edge angular location on the pressure loaded journal bearing of 54.5°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.Type: GrantFiled: June 6, 2014Date of Patent: November 8, 2016Assignee: Hamilton Sundstrand CorporationInventors: Brandon T. Kovach, Steven A. Heitz
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Patent number: 9488173Abstract: One embodiment includes a gear pump with a drive gear, a gear shaft passing through the drive gear, and a stationary journal bearing. Also included is a fluid film location annularly between a surface of the stationary journal bearing and a surface of the gear shaft, and a hybrid pad location on the stationary journal bearing adjacent the fluid film location. The hybrid pad has a minimum leading edge angular location on the stationary journal bearing of 31.0° and a maximum trailing edge angular location on the stationary journal bearing of 43.0°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.Type: GrantFiled: July 31, 2014Date of Patent: November 8, 2016Assignee: Hamilton Sundstrand CorporationInventors: Brandon T. Kovach, Steven A. Heitz
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Patent number: 9453506Abstract: One embodiment includes a gear pump with a drive gear, a gear shaft passing through the drive gear, and a pressure loaded journal bearing. Also included is a fluid film, between a surface of the pressure loaded journal bearing and a surface of the gear shaft, and a hybrid pad on the pressure loaded journal bearing. The hybrid pad has a minimum leading edge angular location on the pressure loaded journal bearing of 29.5° and a maximum trailing edge angular location on the pressure loaded journal bearing of 42.5°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.Type: GrantFiled: June 6, 2014Date of Patent: September 27, 2016Assignee: Hamilton Sundstrand CorporationInventors: Brandon T. Kovach, Steven A. Heitz
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Publication number: 20160123390Abstract: A gear pump includes a drive gear mounted to a first gear shaft, a driven gear meshable with the drive gear, a plurality of journal bearings, and a first porting path. The first porting path is adapted to provide high pressure fluid communication from a discharge of the gear pump to a first hybrid pad location for a first journal bearing selected from the plurality of journal bearings, the first hybrid pad location circumferentially adjacent to a first fluid film location. Each location is disposed annularly between an inner surface of the first journal bearing, and an outer surface of the first gear shaft or second gear shaft corresponding to the first journal bearing.Type: ApplicationFiled: November 3, 2014Publication date: May 5, 2016Inventors: Brandon T. Kovach, Steven A. Heitz
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Publication number: 20160097400Abstract: A impeller for a centrifugal pump has an inducer section. The inducer section has first and second pluralities of blades, each having a plurality of polygonal cross-sections defined by a plurality of vertices. The pluralities of vertices are defined by tables of vertex locations. A method of making a centrifugal pump includes forming an impeller that has an inducer section, as described above, and an impeller section. The impeller is fluidly connected downstream of the inducer section and has third, fourth, and fifth pluralities of blades, each having a plurality of polygonal cross-sectional areas defined by a plurality of vertices. The pluralities of vertices are defined by tables of vertex locations.Type: ApplicationFiled: October 6, 2014Publication date: April 7, 2016Applicant: Hamilton Sundstrand CorporationInventors: Adrian L. Stoicescu, Brandon T. Kovach
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Publication number: 20160097399Abstract: A housing has walls that define a volute passage and a diffuser passage fluidly connected to the volute passage. The volute passage has a first subsection and a second subsection, each having cross-sectional areas defined by tabular data. A centrifugal pump has a rotor and a housing, the housing having walls defining a volute passage and a diffuser passage fluidly connected to the volute passage. The volute passage has a first subsection and a second subsection, each having cross-sectional areas defined by tabular data.Type: ApplicationFiled: October 6, 2014Publication date: April 7, 2016Applicant: Hamilton Sundstrand CorporationInventors: Adrian L. Stoicescu, Brandon T. Kovach
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Publication number: 20160032922Abstract: One embodiment includes a gear pump with a drive gear, a gear shaft passing through the drive gear, and a stationary journal bearing. Also included is a fluid film location annularly between a surface of the stationary journal bearing and a surface of the gear shaft, and a hybrid pad location on the stationary journal bearing adjacent the fluid film location. The hybrid pad has a minimum leading edge angular location on the stationary journal bearing of 31.0° and a maximum trailing edge angular location on the stationary journal bearing of 43.0°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.Type: ApplicationFiled: July 31, 2014Publication date: February 4, 2016Inventors: Brandon T. Kovach, Steven A. Heitz
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Publication number: 20160032969Abstract: A journal bearing assembly includes a first journal bearing disposed about a longitudinal end of a gear shaft and spaced a first distance from a first axial gear face. A first fluid film location and a first hybrid pad location are annularly between an inner surface of the first journal bearing and an outer surface of the gear shaft. The first hybrid pad location circumferentially adjacent to the first fluid film location has a minimum leading edge angular location of at least about 31.0° measured relative to a first bearing flat. A first porting path provides high pressure fluid communication from a location outside the first journal bearing to the first fluid film location at or adjacent to the first hybrid pad location.Type: ApplicationFiled: November 3, 2014Publication date: February 4, 2016Inventors: Brandon T. Kovach, Steven A. Heitz
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Publication number: 20150354559Abstract: One embodiment includes a gear pump with a driven gear, a gear shaft passing through the driven gear, and a pressure loaded journal bearing. Also included is a fluid film, between a surface of the pressure loaded journal bearing and a surface of the gear shaft, and a hybrid pad on the pressure loaded journal bearing. The hybrid pad has a minimum leading edge angular location on the pressure loaded journal bearing of 41.5° and a maximum trailing edge angular location on the pressure loaded journal bearing of 54.5°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.Type: ApplicationFiled: June 6, 2014Publication date: December 10, 2015Inventors: Brandon T. Kovach, Steven A. Heitz
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Publication number: 20150354561Abstract: One embodiment includes a gear pump with a drive gear, a gear shaft passing through the drive gear, and a stationary journal bearing. Also included is a fluid film, between a surface of the stationary journal bearing and a surface of the gear shaft, and a hybrid pad on the stationary journal bearing. The hybrid pad has a minimum leading edge angular location on the stationary journal bearing of 29.5° and a maximum trailing edge angular location on the stationary journal bearing of 42.5°. The gear pump also includes a porting path for supplying high pressure fluid from a discharge of the gear pump to the fluid film at the hybrid pad.Type: ApplicationFiled: June 6, 2014Publication date: December 10, 2015Inventors: Brandon T. Kovach, Steven A. Heitz