Patents by Inventor David G. Bannon
David G. Bannon 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: 10113568Abstract: A ram air turbine actuator release device to release a ram air turbine actuator includes a lock bolt releasably engaged to the ram air turbine actuator, a toggle comprising a toggle roller to engage the lock bolt, and a toggle pivot to couple the toggle to the ram air turbine actuator, a hydraulic toggle actuator, including a piston defining a first hydraulic chamber and a second hydraulic chamber, a solenoid valve in fluid communication with the first hydraulic chamber, and a plunger coupled to the piston, wherein a pressure differential between the first hydraulic chamber and the second hydraulic chamber displaces the plunger to rotate the toggle to disengage the toggle roller from the lock bolt.Type: GrantFiled: February 19, 2016Date of Patent: October 30, 2018Assignee: HAMILTON SUNDSTRAND CORPORATIONInventor: David G. Bannon
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Patent number: 10081440Abstract: A ram air turbine actuator release device to release a ram air turbine actuator includes a lock bolt releasably engaged to the ram air turbine actuator, a toggle including a toggle roller to engage the lock bolt, and a toggle pivot to couple the toggle to the ram air turbine actuator, a toggle actuator, including an actuation source, and a stroke amplifier, including a piston coupled to the actuation source, a first hydraulic chamber having a first diameter in fluid communication with the piston, a second hydraulic chamber having a second diameter in fluid communication with the first hydraulic chamber, and a plunger in fluid communication with the second chamber, wherein a diameter ratio between the first hydraulic chamber and the second hydraulic chamber amplifies a displacement of the actuation source to displace the plunger to rotate the toggle to disengage the toggle roller from the lock bolt.Type: GrantFiled: February 26, 2016Date of Patent: September 25, 2018Assignee: HAMILTON SUNDSTRAND CORPORATIONInventor: David G. Bannon
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Patent number: 10012246Abstract: A linear actuator includes a fixed first end, a second end movable linearly along a central axis of the actuator, an inner cylinder configured to urge axial movement of the second end, and a piston assembly including a piston rod located inside of the inner cylinder. One or more locking pawls are located in pawl openings in the piston rod. The one or more locking pawls are selectably engagable with the inner cylinder to prevent relative motion of the piston rod and the inner cylinder. A lockbolt selectably releases the one or more locking pawls from engagement with the inner cylinder and includes an antilock pin engagable with a pawl opening in the one or more locking pawls to urge the one or more locking pawls away from the inner cylinder with axial movement of the lockbolt.Type: GrantFiled: April 14, 2016Date of Patent: July 3, 2018Assignee: HAMILTON SUNDSTRAND CORPORATIONInventors: David G. Bannon, Timothy Scott Konicek
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Patent number: 10006476Abstract: An actuator assembly includes a housing, an internal cavity within the housing configured to partially contain a pressurized fluid, a fluid inlet port connecting a first opening on an outer surface of the housing to the internal cavity, a fluid outlet port connecting a second opening on the outer surface of the housing to the internal cavity, and a pressure relief channel having a relief inlet and a relief outlet. The relief outlet is in fluid communication with the internal cavity and a distance between the fluid inlet port and the relief outlet is less than half a distance between the fluid inlet port and fluid outlet port.Type: GrantFiled: May 22, 2015Date of Patent: June 26, 2018Assignee: Hamilton Sundstrand CorporationInventors: David G. Bannon, Paul Michael Reinhard
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Patent number: 9976636Abstract: A locking mechanism for a ram air turbine (RAT) includes a base clevis configured to mount to a housing and to have a base link clevis connector portion defining a plurality of base link clevis connector arms and a base link clevis having a base connector portion defining base connector arms that are configure to movably connect to the base link clevis connector arm. The locking mechanism also includes a pin operatively connecting the base connector portion to the base link clevis connector portion in a rotatable relationship and a spring positioned around the pin, wherein a first spring end abuts the base clevis and a second spring end abuts the base link clevis to bias the base link clevis to an unlocked position. A sleeve is positioned between the spring and the pin to maintain a wind diameter of the spring.Type: GrantFiled: April 22, 2015Date of Patent: May 22, 2018Assignee: Hamilton Sundstrand CorporationInventors: Christopher S. Prokup, David G. Bannon, Mark A. Osborn, Gregory J. Bradley, William E. Seidel
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Patent number: 9863276Abstract: An actuator housing is provided. The actuator housing may comprise a body, and a first side of the body including a first pin interface and a first threaded hole clocked relative to the first pin interface. The first pin interface and the first threaded hole may be configured to interface with a solenoid housing. A second side of the body may be orthogonal to the first side. The second side may include a circular geometry with a cylindrical member disposed central to the circular geometry. A toggle assembly interface may be recessed in the second side and disposed within the cylindrical member.Type: GrantFiled: February 19, 2015Date of Patent: January 9, 2018Assignee: HAMILTON SUNSTRAND CORPORATIONInventors: Christopher S. Prokup, David G. Bannon, Mark A. Osborn, Gregory J. Bradley
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Publication number: 20170298964Abstract: A linear actuator includes a fixed first end, a second end movable linearly along a central axis of the actuator, an inner cylinder configured to urge axial movement of the second end, and a piston assembly including a piston rod located inside of the inner cylinder. One or more locking pawls are located in pawl openings in the piston rod. The one or more locking pawls are selectably engagable with the inner cylinder to prevent relative motion of the piston rod and the inner cylinder. A lockbolt selectably releases the one or more locking pawls from engagement with the inner cylinder and includes an antilock pin engagable with a pawl opening in the one or more locking pawls to urge the one or more locking pawls away from the inner cylinder with axial movement of the lockbolt.Type: ApplicationFiled: April 14, 2016Publication date: October 19, 2017Inventors: David G. Bannon, Timothy Scott Konicek
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Publication number: 20170247117Abstract: A ram air turbine actuator release device to release a ram air turbine actuator includes a lock bolt releasably engaged to the ram air turbine actuator, a toggle including a toggle roller to engage the lock bolt, and a toggle pivot to couple the toggle to the ram air turbine actuator, a toggle actuator, including an actuation source, and a stroke amplifier, including a piston coupled to the actuation source, a first hydraulic chamber having a first diameter in fluid communication with the piston, a second hydraulic chamber having a second diameter in fluid communication with the first hydraulic chamber, and a plunger in fluid communication with the second chamber, wherein a diameter ratio between the first hydraulic chamber and the second hydraulic chamber amplifies a displacement of the actuation source to displace the plunger to rotate the toggle to disengage the toggle roller from the lock bolt.Type: ApplicationFiled: February 26, 2016Publication date: August 31, 2017Inventor: David G. Bannon
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Publication number: 20170241453Abstract: A ram air turbine actuator release device to release a ram air turbine actuator includes a lock bolt releasably engaged to the ram air turbine actuator, a toggle comprising a toggle roller to engage the lock bolt, and a toggle pivot to couple the toggle to the ram air turbine actuator, a hydraulic toggle actuator, including a piston defining a first hydraulic chamber and a second hydraulic chamber, a solenoid valve in fluid communication with the first hydraulic chamber, and a plunger coupled to the piston, wherein a pressure differential between the first hydraulic chamber and the second hydraulic chamber displaces the plunger to rotate the toggle to disengage the toggle roller from the lock bolt.Type: ApplicationFiled: February 19, 2016Publication date: August 24, 2017Inventor: David G. Bannon
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Patent number: 9656763Abstract: An actuator for a ram air turbine system includes a piston rod that is cylindrical in shape and centered about a centerline, and stow lock pawls supported by the piston rod and able to move radially. Each of the stow lock pawls has a crown with a crown radius. The actuator further includes a lock bolt extending along the centerline radially within the piston rod and configured to be axially movable within the piston rod between a stowed position and a deployed position. The actuator further includes rollers radially outward from the centerline configured to be guided by the lock bolt and a cylinder having a mating surface with a mating radius. The cylinder is positioned radially outward from the piston rod and configured to be axially movable between the stowed position and the deployed position. A ratio of the crown radius of the stow lock pawls to the mating radius of the cylinder is less than 0.98.Type: GrantFiled: August 13, 2014Date of Patent: May 23, 2017Assignee: Hamilton Sundstrand CorporationInventor: David G. Bannon
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Publication number: 20170106498Abstract: A method of manufacturing an actuator assembly component is provided. The method includes tumble polishing the actuator assembly component. The method also includes taking at least one bearing ratio measurement along a portion of a surface of the actuator assembly component. The method further includes comparing the at least one bearing ratio measurement to a minimum bearing ratio value to verify that the actuator assembly component has been tumble polished.Type: ApplicationFiled: October 20, 2015Publication date: April 20, 2017Inventors: Pawel P. Chodakowski, David G. Bannon
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Patent number: 9598980Abstract: A ram air turbine assembly includes a governor shaft rotatable about an axis and a stop shaft coupled for rotation with the governor shaft. A rotatable housing portion surrounds at least a portion of the stop shaft. A lock plunger extends through an opening in the rotatable housing portion to prevent rotation of the rotatable housing portion and minimize vibration impact loading when stowed.Type: GrantFiled: April 27, 2012Date of Patent: March 21, 2017Assignee: Hamilton Sundstrand CorporationInventors: David G. Bannon, David E. Russ
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Patent number: 9561862Abstract: In one aspect, a ram air turbine stall recovery system includes a ram air turbine, a hydraulic pump powered by the ram air turbine with the hydraulic pump having a pump inlet and a pump outlet, an electric generator powered by the ram air turbine, a bypass line that connects the pump outlet to the pump inlet, a bypass valve located on the bypass line between the pump outlet and the pump inlet; and a controller responsive to an input signal that indicates a potential stall condition of the ram air turbine. The controller causes the bypass valve to open to allow a hydraulic fluid to flow through the bypass line in order to reduce a pressure within the hydraulic pump.Type: GrantFiled: February 20, 2014Date of Patent: February 7, 2017Assignee: Hamilton Sundstrand CorporationInventors: David G. Bannon, William E. Seidel
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Patent number: 9511876Abstract: An actuator housing is provided. The actuator housing may comprise a body. A first side of the body may include a first pin interface and a first threaded hole clocked relative to the first pin interface. The first pin interface and the first threaded hole may be configured to interface with a solenoid housing. A second side the body may be disposed adjacent the first side. The second side may include a toggle assembly interface configured to receive a toggle assembly. A third side of the body may be disposed adjacent the first side and the second side. The third side may include an adapter interface configured to receive an adapter for the toggle assembly.Type: GrantFiled: February 17, 2015Date of Patent: December 6, 2016Assignee: Hamilton Sundstrand CorporationInventors: Christopher S. Prokup, David G. Bannon, Mark A. Osborn, Gregory J. Bradley
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Publication number: 20160341225Abstract: An actuator assembly includes a housing, an internal cavity within the housing configured to partially contain a pressurized fluid, a fluid inlet port connecting a first opening on an outer surface of the housing to the internal cavity, a fluid outlet port connecting a second opening on the outer surface of the housing to the internal cavity, and a pressure relief channel having a relief inlet and a relief outlet. The relief outlet is in fluid communication with the internal cavity and a distance between the fluid inlet port and the relief outlet is less than half a distance between the fluid inlet port and fluid outlet port.Type: ApplicationFiled: May 22, 2015Publication date: November 24, 2016Inventors: David G. Bannon, Paul Michael Reinhard
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Publication number: 20160312865Abstract: A locking mechanism for a ram air turbine (RAT) includes a base clevis configured to mount to a housing and to have a base link clevis connector portion defining a plurality of base link clevis connector arms and a base link clevis having a base connector portion defining base connector arms that are configure to movably connect to the base link clevis connector arm. The locking mechanism also includes a pin operatively connecting the base connector portion to the base link clevis connector portion in a rotatable relationship and a spring positioned around the pin, wherein a first spring end abuts the base clevis and a second spring end abuts the base link clevis to bias the base link clevis to an unlocked position. A sleeve is positioned between the spring and the pin to maintain a wind diameter of the spring.Type: ApplicationFiled: April 22, 2015Publication date: October 27, 2016Inventors: Christopher S. Prokup, David G. Bannon, Mark A. Osborn, Gregory J. Bradley, William E. Seidel
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Publication number: 20160245118Abstract: An actuator housing is provided. The actuator housing may comprise a body, and a first side of the body including a first pin interface and a first threaded hole clocked relative to the first pin interface. The first pin interface and the first threaded hole may be configured to interface with a solenoid housing. A second side of the body may be orthogonal to the first side. The second side may include a circular geometry with a cylindrical member disposed central to the circular geometry. A toggle assembly interface may be recessed in the second side and disposed within the cylindrical member.Type: ApplicationFiled: February 19, 2015Publication date: August 25, 2016Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Christopher S. Prokup, David G. Bannon, Mark A. Osborn, Gregory J. Bradley
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Publication number: 20160236793Abstract: An actuator housing is provided. The actuator housing may comprise a body. A first side of the body may include a first pin interface and a first threaded hole clocked relative to the first pin interface. The first pin interface and the first threaded hole may be configured to interface with a solenoid housing. A second side the body may be disposed adjacent the first side. The second side may include a toggle assembly interface configured to receive a toggle assembly. A third side of the body may be disposed adjacent the first side and the second side. The third side may include an adapter interface configured to receive an adapter for the toggle assembly.Type: ApplicationFiled: February 17, 2015Publication date: August 18, 2016Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: Christopher S. Prokup, David G. Bannon, Mark A. Osborn, Gregory J. Bradley
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Patent number: 9399522Abstract: A component for use in a ram air turbine actuator includes a lock bolt extending along a centerline with the lock bolt being axially movable between a stowed position and a deployed position and a plurality of rollers that are radially outward from the centerline and guided by the lock bolt. The component also includes a slider radially between at least a portion of the lock bolt and a piston rod with the slider being axially movable between a stop position and the deployed position and up-lock wedges supported by the piston rod. The actuator becomes locked in the stowed position when the lock bolt and slider move axially within the piston rod and a cylinder to position the rollers to push the up-lock wedges radially outward into an aperture and prevent the lock bolt, slider, and cylinder from axial movement.Type: GrantFiled: February 20, 2014Date of Patent: July 26, 2016Assignee: Hamilton Sundstrand CorporationInventor: David G. Bannon
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Patent number: 9267384Abstract: A flyweight for use in a ram air turbine has a body with a circumferentially enlarged portion extending between flat sides spaced by an angle of between 45 degrees and 150 degrees. A pivot point is defined by a bore at a circumferentially intermediate point in the body, and in a relatively thin inner portion. The relatively thin inner portion extends beyond the pivot point to an end that will be radially inward when the flyweight is mounted in a ram air turbine. A governor, a ram air turbine and a method are also described.Type: GrantFiled: March 2, 2012Date of Patent: February 23, 2016Assignee: Hamilton Sundstrand CorporationInventors: David G. Bannon, David L. Jacques