Patents by Inventor David Everett Russ
David Everett Russ 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: 9211958Abstract: An example ram air turbine biasing assembly includes a support member that holds a biasing member. The biasing member biases a component of a ram air turbine. The support member includes a step that limits movement of the component toward the biasing member.Type: GrantFiled: March 27, 2012Date of Patent: December 15, 2015Assignee: Hamilton Sundstrand CorporationInventor: David Everett Russ
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Patent number: 9205928Abstract: A ram air turbine (RAT) in which a cam follower is operably coupled to turbine blades such that a cam follower position determines turbine blade pitch.Type: GrantFiled: September 8, 2014Date of Patent: December 8, 2015Assignee: ROSEMOUNT AEROSPACE, INC.Inventor: David Everett Russ
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Patent number: 9115799Abstract: A ram air turbine gearbox housing includes a housing body that has a first flange that defines a first plane and a second flange that defines a second plane that is transverse to the first plane. The housing body extends around an axis and has a first axial end and an opposite, second axial end that are each open to an internal cavity of the housing body. The housing body includes a radially-enlarged section at least partially defining an oil sump within the internal cavity of the housing body.Type: GrantFiled: March 27, 2012Date of Patent: August 25, 2015Assignee: Hamilton Sundstrand CorporationInventor: David Everett Russ
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Patent number: 9108742Abstract: An example ram air turbine stow abort assembly includes a release pin movable between an engaged position that prevents rotation of a drive shaft and a released position that allows rotation of the drive shaft. A release lever is rotatable about an axis in response to the release pin being in the engaged position or the released position. A pawl has a link to the release lever. The link causes the pawl to move toward the axis from a locking position to a clearance position. The pawl is positioned to engage a lock when in the locking position to prevent movement of the ram air turbine assembly to a stowed position when the turbine blades are misaligned.Type: GrantFiled: March 27, 2012Date of Patent: August 18, 2015Assignee: Hamilton Sundstrand CorporationInventor: David Everett Russ
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Patent number: 9045983Abstract: A turbine having a cam follower operable to control turbine blade pitch in association with a position thereof is provided and includes an axially movable plate, a rotational and axially movable flyweight and a system operably coupled to the plate and the flyweight whereby, at low RPMs, the system prevents flyweight rotation such that the plate and the flyweight position the cam follower at a first position, at medium RPMs, the system permits flyweight rotation such that the plate and the flyweight position the cam follower at a second position, and, at high RPMs, the system prevents further flyweight rotation and permits initial axial movement of the plate and the flyweight such that the plate and the flyweight position the cam follower at a third position.Type: GrantFiled: October 19, 2010Date of Patent: June 2, 2015Assignee: Hamilton Sundstrand CorporationInventor: David Everett Russ
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Publication number: 20150096437Abstract: An assembly includes an actuator assembly having a housing, a piston positioned at least partially within the housing and movable relative to the housing for an overall actuation stroke, a first spring operatively engaged between the piston and the housing to provide actuation biasing force therebetween, a second spring operatively engaged with the piston, and a spring guide. The spring guide is operatively engaged with the first spring and operatively engaged with the piston via a sliding connection. The spring guide is further configured to limit a stroke of the first spring such that the first spring contributes actuation biasing force between the piston and the housing for only a fractional portion of the overall actuation stroke of the piston.Type: ApplicationFiled: February 17, 2014Publication date: April 9, 2015Applicant: HAMILTON SUNDSTRAND CORPORATIONInventor: David Everett Russ
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Publication number: 20150064006Abstract: A ram air turbine (RAT) in which a cam follower is operably coupled to turbine blades such that a cam follower position determines turbine blade pitch.Type: ApplicationFiled: September 8, 2014Publication date: March 5, 2015Inventor: David Everett Russ
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Patent number: 8970059Abstract: An example ram air turbine generator assembly includes a generator housing that holds a generator in axial alignment with a hydraulic pump. The generator housing includes a wall having contacting portions that contact a stator of the generator and spaced portions that are radially spaced from the stator. The generator wall is designed to be strong enough to withstand HLSD and windmilling vibrations, while flexible enough to accommodate thermal expansion.Type: GrantFiled: March 27, 2012Date of Patent: March 3, 2015Assignee: Hamilton Sundstrand CorporationInventors: David Everett Russ, Kanthi Gnanam Kannan
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Patent number: 8931734Abstract: A ram air turbine assembly is provided including a release cable coupled at a first end to a turbine release pin and coupled at a second end to a release lever. Aluminum tubing surrounds a portion of the release cable. An upper cable bracket supports the aluminum tubing adjacent the first end of the release cable. A lower cable bracket supports the aluminum tubing adjacent the second end of the release cable. The lower cable bracket includes a threaded bushing having an axial bore for receiving the release cable. The threaded bushing is in direct contact with an end fitting coupled to the aluminum tubing.Type: GrantFiled: September 13, 2012Date of Patent: January 13, 2015Assignee: Hamilton Sundstrand CorporationInventors: David Everett Russ, Kanthi Gnanam Kannan
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Patent number: 8876474Abstract: A ram air turbine (RAT) in which a cam follower is operably coupled to turbine blades such that a cam follower position determines turbine blade pitch.Type: GrantFiled: November 4, 2010Date of Patent: November 4, 2014Assignee: Hamilton Sundstrand CorporationInventor: David Everett Russ
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Patent number: 8814520Abstract: A ram air turbine assembly includes a preferentially located mass that modifies the resonance frequency of the assembly so that vibration is reduced to desired levels. The example mass can be fixed in a specific location on the ram air turbine or can be deployable once the ram air turbine is moved to an operating position.Type: GrantFiled: December 22, 2008Date of Patent: August 26, 2014Assignee: Hamilton Sundstrand CorporationInventors: David Everett Russ, David G. Bannon
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Patent number: 8777587Abstract: A hydraulic system for a ram air turbine includes a hydraulic pump having a high pressure fluid outlet port, a housing, a pivot post arranged to pass through the housing and defining a mechanical pivot relative to the housing about an axis, a transfer tube positioned between the high pressure fluid outlet port of the hydraulic pump and a port in the housing for the high pressure fluid outlet path, and seal elements positioned at or near opposite ends of the transfer tube. A fluid inlet path and a high pressure fluid outlet path pass through the housing and the pivot post. The transfer tube has a crowned end.Type: GrantFiled: May 2, 2012Date of Patent: July 15, 2014Assignee: Hamilton Sundstrand CorporationInventors: David Everett Russ, Magdy A. Kandil, Doren C. Smith
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Publication number: 20140070049Abstract: A ram air turbine assembly is provided including a release cable coupled at a first end to a turbine release pin and coupled at a second end to a release lever. Aluminum tubing surrounds a portion of the release cable. An upper cable bracket supports the aluminum tubing adjacent the first end of the release cable. A lower cable bracket supports the aluminum tubing adjacent the second end of the release cable. The lower cable bracket includes a threaded bushing having an axial bore for receiving the release cable. The threaded bushing is in direct contact with an end fitting coupled to the aluminum tubing.Type: ApplicationFiled: September 13, 2012Publication date: March 13, 2014Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: David Everett Russ, Kanthi Gnanam Kannan
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Publication number: 20140054127Abstract: A ram air turbine with a turbine assembly and a power train, the turbine assembly only coupling to the entire power train upon reaching a desired rotational speed of the turbine assembly, the ram air turbine having a clutch mechanism, the engagement of which couples the turbine assembly to at least a portion of the power train, and a speed control mechanism that engages the clutch mechanism only when the turbine assembly attains at least the desired rotational speed.Type: ApplicationFiled: August 21, 2012Publication date: February 27, 2014Applicant: Hamilton Sundstrand CorporationInventors: Magdy A. Kandil, David Everett Russ, Stephen George Mican
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Patent number: 8651815Abstract: A ram air turbine (RAT) includes a movable turbine support structure that is prevented from moving to a stowed position by a stow abort mechanism when turbine blades are not locked in a desired position. The stow abort mechanism includes a pawl that is driven by a cam on a release lever. The release lever is movable in response to a position of a release pin that prevents rotation of a turbine drive shaft from a desired orientation that locks the turbine blades in a desired position required for stowage. Disengagement of the release pin causes the stow abort mechanism to maintain a position where the pawl blocks movement to the deployed position. Engagement of the release pin to prevent rotation results in movement of the pawl to a position that provides for movement to the stowed position.Type: GrantFiled: June 21, 2010Date of Patent: February 18, 2014Assignee: Hamilton Sundstrand CorporationInventor: David Everett Russ
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Patent number: 8641379Abstract: An example a ram air turbine assembly (RAT) is mounted to an airframe and provides both electric power and hydraulic pressure. A turbine drives a drive shaft about an axis transverse to rotation of the turbine. The drive shaft in turn drives both a generator and a hydraulic pump at a common speed.Type: GrantFiled: June 30, 2010Date of Patent: February 4, 2014Assignee: Hamilton Sundstrand CorporationInventors: David Everett Russ, Michael E. Larson, Jr.
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Patent number: 8602736Abstract: A disclosed ram air turbine assembly includes a movable support structure that is prevented from moving to a stowed position by a stow abort mechanism that prevents movement to the stowed position when the turbine is not in a desired orientation.Type: GrantFiled: March 22, 2010Date of Patent: December 10, 2013Assignee: Hamilton Sundstrand CorporationInventor: David Everett Russ
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Publication number: 20130292510Abstract: A hydraulic system for a ram air turbine includes a hydraulic pump having a high pressure fluid outlet port, a housing, a pivot post arranged to pass through the housing and defining a mechanical pivot relative to the housing about an axis, a transfer tube positioned between the high pressure fluid outlet port of the hydraulic pump and a port in the housing for the high pressure fluid outlet path, and seal elements positioned at or near opposite ends of the transfer tube. A fluid inlet path and a high pressure fluid outlet path pass through the housing and the pivot post. The transfer tube has a crowned end.Type: ApplicationFiled: May 2, 2012Publication date: November 7, 2013Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: David Everett Russ, Magdy A. Kandil, Doren C. Smith
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Publication number: 20130292509Abstract: A ram air turbine system includes an actuator having a threaded portion, a rod having a threaded region at or near one end and an eyelet at an opposite end, and a bushing. The bushing has a first thread engaged with the threaded portion of the actuator, and a second thread engaged with the threaded region of the rod, such that an actuation force can be transmitted between the actuator and the rod through the bushing. The first and second threads of the bushing have different pitches.Type: ApplicationFiled: May 1, 2012Publication date: November 7, 2013Applicant: HAMILTON SUNDSTRAND CORPORATIONInventors: David Everett Russ, Gary Sasscer
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Publication number: 20130259648Abstract: A ram air turbine gearbox housing includes a housing body that has a first flange that defines a first plane and a second flange that defines a second plane that is transverse to the first plane. The housing body extends around an axis and has a first axial end and an opposite, second axial end that are each open to an internal cavity of the housing body. The housing body includes a radially-enlarged section at least partially defining an oil sump within the internal cavity of the housing body.Type: ApplicationFiled: March 27, 2012Publication date: October 3, 2013Inventor: David Everett Russ