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Woodward Inc patents


Recent patent applications related to Woodward Inc. Woodward Inc is listed as an Agent/Assignee. Note: Woodward Inc may have other listings under different names/spellings. We're not affiliated with Woodward Inc, we're just tracking patents.

ARCHIVE: New 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 | Company Directory "W" | Woodward Inc-related inventors


 new patent  Controlling engine ignition

An ignition control system for an internal combustion engine has a coil connector for connecting to an ignition coil, a processor coupled to the coil connector, and a memory coupled to the processor. The memory contains instructions for the processor to, in communication with the ignition coil, achieve and maintain a target spark duration by dynamically controlling a coil dwell set-point of the ignition coil. ... Woodward Inc

 new patent  Variable fluid flow apparatus with integrated filter

The subject matter of this specification can be embodied in, among other things, a fluid flow trim apparatus includes an outer housing defining a cavity having an interior surface and an end wall having an orifice therethrough, a valve body comprising a first valve portion disposed at least partly within the cavity, the first valve portion and the interior surface defining a first fluid flow path, a second valve portion in contact with the interior surface and defining a second fluid flow path. A third valve portion is disposed at least partly within the cavity between the first and second valve portions. ... Woodward Inc

Torque output intensifier

The subject matter of this specification can be embodied in, among other things, a rotary actuator that includes a housing defining an arcuate chamber comprising a cavity, a fluid port in fluid communication with the cavity, and an open end, the arcuate chamber following a portion of a first arc between a first end and a second proximal the open end, an arcuate-shaped piston disposed in said housing for reciprocal movement in the arcuate chamber through the open end, the arcuate-shaped piston following a portion of a second arc having a radius of curvature, wherein a seal, the cavity, and the piston define a pressure chamber, and a first bearing in contact with a first radial side of the piston relative to the radius of curvature at a contact point beyond the first arc.. . ... Woodward Inc

Redundant extension linear actuator and methods of use

An actuator having an output slidable between extended and retracted positions is provided. The actuator includes a primary module having a power drive, power screw rotatable by the power drive, and a nut operable to translate rotation of the power screw to linear motion of the nut across the power screw. ... Woodward Inc

Quiescent chamber hot gas igniter

An engine has an ignition source in a combustion chamber of the engine. An inner housing is provided that includes one or more jet apertures and defines an inner chamber containing the ignition source. ... Woodward Inc

Rotary piston type actuator with a central actuation assembly

A rotary actuator includes a housing, a rotor assembly rotatably journaled in said housing and including a rotary output shaft, a central actuation assembly including a central mounting point formed in an external surface of the rotary output shaft, said central mounting point proximal to the longitudinal midpoint of the rotary output shaft, a mounting assembly adapted for attachment to an external mounting connector of a mounting surface of an aircraft structural member, and an actuation arm removably attached at a proximal end to the central mounting point, said actuation arm adapted at a distal end for attachment to an external mounting feature of an aircraft assembly to be actuated.. . ... Woodward Inc

Frame for printed circuit board support in high vibration

A frame for dampening vibrations in a printed circuit board (pcb) assembly is provided. The frame includes a substrate having a first surface and a second surface and multiple ridges extending from at least one of the first and second surfaces. ... Woodward Inc

Stepper motor driven proportional rotary actuator

A stepper motor driven actuator system is provided. The system includes a stepper motor, a cam, and a gearbox system. ... Woodward Inc

Multi-chamber rotary piston actuator

The subject matter of this specification can be embodied in, among other things, a fluid actuator including a housing defining a first chamber having a first cavity and a first open end, a first piston assembly including a tubular first piston defining a second chamber having a second cavity and a second open end, disposed in said first housing for reciprocal movement in the first chamber through the first open end, wherein a first seal, the first cavity, and the first piston define a first pressure chamber, and a second piston assembly having an second piston disposed in said first piston assembly for reciprocal movement in the second chamber through the second open end, wherein a second seal, the second cavity, and the second piston define a second pressure chamber, and a first portion of the second piston contacts a first end effector.. . ... Woodward Inc

Multi-axis rotary piston actuator

The subject matter of this specification can be embodied in, among other things, a multi-axis rotary actuator that includes a first rotary piston actuator configured to controllably actuate a first pivotal joint between a first linkage to a second linkage about a first axis, and a second rotary piston actuator configured to controllably actuate a second pivotal joint connecting the second linkage to a third linkage about a second axis.. . ... Woodward Inc

Selectively configurable brushless dc motor

An actuator including a motor with a configurable topology and a switching array operably coupled to the motor. The switching array is adapted to configure the topology of the motor. ... Woodward Inc

Turbine control device prognostics

Providing wear-related prognostics and diagnostics on a turbine engine includes, while operating a turbine control device, tracking a total device travel distance over time by recurrently: selectively identifying actual device movement based on device position data associated with a displacement sensor monitoring the turbine control device; and accumulating an incremental device travel distance corresponding to the identified actual device movement with the total device travel distance.. . ... Woodward Inc

Linear actuator with selective disengagement

An actuator is provided. The actuator includes a housing and a ram linearly movable relative to the housing. ... Woodward Inc

Filter monitoring

Provided is an apparatus for delivering electrical power, in particular for delivering regeneratively produced electrical power, which has at least one converter and at least one filter for matching the delivery of power by the converter to a load impedance. Also provided is a method for operating the apparatus for delivering electrical power which allows improved monitoring of the functioning of the filters or mains filters and which uses means for determining at least one filter current in at least one filter, which means are designed in such a manner that said means make it possible to determine the at least one filter current during operation of the apparatus. ... Woodward Inc

11/16/17 / #20170328570

Combustor with staged, axially offset combustion

In some aspects, a gas turbine combustor assembly is arranged around a longitudinal axis. The gas turbine combustor comprises a first fuel/air mixer assembly, the mixer assembly comprising a first fuel injector and a plurality of first mixer elements, each mixer element defining an air flow passage therethrough having an outlet in a first plane. ... Woodward Inc

10/26/17 / #a cylindrical polymeric cover for an industrial roll includes a plurality of through holes and a plurality of blind drilled holes. the through holes and the blind drilled holes are arranged in a pattern in which:

Stowe Woodward Licensco, Llc

. . ... Woodward Inc

09/21/17 / #20170268460

Electric track lock

The subject matter of this specification can be embodied in, among other things, a track lock assembly that includes a pawl assembly comprising a pawl arm extending from a pawl axis and configured to engage a slot in a slider assembly, a cam arm extending from the pawl axis and having a pawl cam, and a compliant member, and a position lock assembly comprising a first lock arm extending from a lock axis and an actuator configured to urge rotation of the first lock arm between a lock locked position and a lock unlocked position, the first lock arm configured to engage and retain the cam arm in a pawl locked position when the first lock arm is in the lock locked position and disengage the cam arm in the lock unlocked position such that the compliant member is able to urge the pawl assembly to a pawl unlocked position.. . ... Woodward Inc

09/07/17 / #20170253318

Redundant vehicle control systems

A redundant control system for a vehicle includes: one or more actuator housings; a plurality of actuator pistons coupled to the actuator housings, each of the actuator pistons mechanically coupled to one another and a common output device; a plurality of primary stages coupled to the actuator housings, each of the primary stages operatively coupled to move a respective actuator piston relative to at least one of the actuator housings, and each of the primary stages functioning independent of any other primary stage when the control system is operating in a flight-operation mode; and an auxiliary stage operatively coupled to move a first of the plurality of actuator pistons relative to at least one of the actuator housings when the control system is operating in a ground-operation mode, with each of the plurality of primary stages being responsive to movement of the first actuator piston by the auxiliary stage.. . ... Woodward Inc

08/17/17 / #20170234920

Detection of valve open time for solenoid operated fuel injectors

The subject matter of this specification can be embodied in, among other things, a method that includes evaluating an analog electrical current waveform, determining a boolean waveform based on the evaluated analog electrical current waveform, determining a collection of one or more first durations based on one or more on times identified from the boolean waveform, determining a collection of one or more second durations based on one or more off times identified from the boolean waveform, comparing the first durations and the second durations, determining, based on the comparing, an event based on the comparing, identifying a time at which the event occurred, and providing the time as a completion time.. . ... Woodward Inc

08/10/17 / #20170226963

Thrust reverser actuating

A thrust reverser includes: a thrust-reversing element movable between a stowed position and a deployed position; at least one hydraulic actuator operably coupled to move the thrust-reversing element between the stowed and deployed positions; at least one hydraulic primary lock configured to transition, in response to a first activation pressure, between an engaged state, where movement of the thrust-reversing element is inhibited, and a released state, where movement of the thrust-reversing element is uninhibited; and a directional control unit fluidly coupled to the hydraulic actuator and the hydraulic primary lock, the directional control unit configured to transition from a first stage to a second stage in response to a second activation pressure that is greater than the first activation pressure, and where a transition from the first stage to the second stage by the directional control unit causes the hydraulic actuator to move the thrust-reversing element to the deployed position.. . ... Woodward Inc

08/03/17 / #20170218983

Rotary piston actuator anti-rotation configurations

A rotary actuator includes a housing having an interior boundary that defines a central bore and has interior recesses, a chamber housing assembly disposed in the central bore and having an arcuate chamber, the arcuate chamber comprising a cavity, an exterior boundary of the chamber housing assembly having exterior recesses, each of the exterior recesses aligned with a respective one of the interior recesses, pins residing between the interior boundary and the exterior boundary, each of the pins mated to one of the exterior recesses and a corresponding one of the interior recesses to maintain an orientation of the chamber housing assembly with respect to the housing, a rotor assembly rotatably journaled in the chamber housing assembly and comprising a rotary output shaft and a rotor arm, and an arcuate-shaped piston disposed in the chamber housing assembly for reciprocal movement in the arcuate chamber.. . ... Woodward Inc

07/27/17 / #20170214305

Torque motor with mechanical flexures establishing armature-to-field gaps

A torque motor has a mechanical reference member, an armature, and a field assembly. The field assembly includes field pole pieces defining a pole opening, and the armature is mounted to the mechanical reference member for rotation about a motor axis and extends into the pole opening with respective gaps to the field pole pieces. ... Woodward Inc

06/15/17 / #20170170748

Controlled bootstrap driver for high side electronic switching device

The subject matter of this specification can be embodied in, among other things, a method that includes providing first power received from a first power bus to a first switching device configured to switch first power to a first output port based on a first input signal received at a first input port, providing second power received from a second power bus to a second switching device configured to switch second power to a first bootstrap capacitor coupled between the second switching device and the first output port based on a second input signal received at a second input port, providing an output voltage to the first output port, providing the second input signal to the second input port, switching the second switching device based on the second input signal, and charging the first bootstrap capacitor with second power received from the second power bus.. . ... Woodward Inc

06/08/17 / #20170163012

Cap shielded ignition system

A system for igniting a mixture in an internal combustion engine includes an elongate plug body generally residing around a center longitudinal axis and adapted to couple to the internal combustion engine. The system also includes a first ignition body residing about an end of the plug body and a second ignition body adjacent the first ignition body to define a flame kernel initiation gap between the second ignition body and the first ignition body. ... Woodward Inc

06/08/17 / #20170159681

Locking rotary actuator

The subject matter of this specification can be embodied in, among other things, a locking apparatus for a rotary actuator includes an outer housing comprising a cylindrical interior surface having a recess. A rotor is disposed within the outer housing. ... Woodward Inc

06/01/17 / #20170152856

Load sharing control for compressors in series

In some aspects, a compressor system includes a compressor train including two or more compressors connected in series and a control mechanism. The control mechanism is controlled by a performance controller. ... Woodward Inc

05/18/17 / #20170138154

Wireless control valve

The subject matter of this specification can be embodied in, among other things, a process control valve including a fluid valve body having an inlet for receiving fluid, an outlet for discharging fluid, a fluid flow passage connecting the inlet and outlet, and a controllable throttling element which is moveable to selectively vary the cross-sectional area of flow of at least a portion of the passage, a valve actuator coupled to the valve body and responsive to control signals, a sensor for producing at least one signal representative of at least one of absolute pressure, gage pressure, differential pressure, flow, and temperature within the fluid flow passage, a communication system for receiving configuration information and transmitting status information, and a controller comprising a processor for receiving said signal and configuration information, for developing an output dependent upon the configuration information and the received signal, and for developing the status information.. . ... Woodward Inc

05/18/17 / #20170137998

Polyurethane roll cover for calender roll for papermaking machine

A calender roll for a papermaking machine includes: a substantially cylindrical core; and a cover circumferentially surrounding the core. The cover comprises a base layer circumferentially overlying the core; and a topstock layer comprising polyurethane circumferentially overlying the base layer, the topstock layer being fiber reinforced, the polyurethane having a glass transition temperature of between about 120 and 150° c., the topstock layer having a hardness of 70 to 90 shd.. ... Woodward Inc

05/18/17 / #20170137997

Polyurethane roll cover for calender roll for papermaking machine

A calender roll for a papermaking machine includes: a substantially cylindrical core; and a cover circumferentially surrounding the core. The cover comprises: a base layer circumferentially overlying the core; and a topstock layer comprising polyurethane circumferentially overlying the base layer, the topstock layer being fiber-reinforced, the polyurethane having a glass transition temperature of between about 120 and 150° c., the topstock layer having a hardness of 70 to 90 shd.. ... Woodward Inc

05/04/17 / #20170122184

Gaseous fuel combustion

In an internal combustion engine, gaseous fuel is injected in a first injection through a pre-combustion chamber into the combustion chamber to mix with air in the combustion chamber. The pre-combustion chamber has a jet aperture in fluid communication between the pre-combustion chamber and the combustion chamber. ... Woodward Inc

04/06/17 / #20170096932

Passive prechamber direct injection combustion

An injector-igniter assembly includes a passive prechamber and a fuel injector. In an internal combustion engine, fuel is directly injected into a combustion chamber to mix with air in the combustion chamber. ... Woodward Inc

03/16/17 / #20170075326

Adaptive multiple input multiple output pid control system for industrial turbines

The subject matter of this specification can be embodied in, among other things, a method that includes receiving, at a ratio controller, turbine response values based on first process output value based on a first control parameter and a first process input value, and a second process output value based on a second control parameter and a second process input value, providing the first process input value as a predetermined first constant set point value while varying the second process input value, receiving updated turbine response values, determining at least one third control parameter, providing the third control parameter as the second control parameter, providing the second process input value as a predetermined second constant set point value while varying the first process input value, receiving updated turbine response values, determining at least one fourth control parameter, and providing the fourth control parameter as the first control parameter.. . ... Woodward Inc

03/16/17 / #20170074518

Prefilming fuel/air mixer

A turbine combustor assembly includes a fuel/air mixer assembly having a plurality of fuel/air mixer elements and a fuel injector coupled to the fuel/air mixer assembly. Each of the fuel/air mixer elements includes: a fuel/air mixer body having an internal cavity extending axially between an air inlet and an air outlet; and a prefilmer residing within an interior cavity of the fuel/air mixer body, the prefilmer including an axial inner air flow passage extending coaxially with an axial centerline of the internal cavity of the fuel/air mixer body and a radial fuel injection port into the air flow passage. ... Woodward Inc

03/02/17 / #20170058911

Centrifugal pump with serrated impeller

A centrifugal pump and an impeller thereof are provided. The impeller defines an outer peripheral edge which includes a plurality of serrations circumferentially thereon. ... Woodward Inc

03/02/17 / #20170058906

Turbomachine anti-surge system

The subject matter of this specification can be embodied in, among other things, a compressor anti-surge system that includes a first actuator configured to actuate a first valve of a first turbomachine, and a first controller at least partially integrated with the first actuator or the first valve, and comprising circuitry configured to perform at least one of a control operation or a protection operation for the first turbomachine.. . ... Woodward Inc

02/23/17 / #20170050721

Inherently balanced control stick

The subject matter of this specification can be embodied in, among other things, a control apparatus includes a first mounting member, an elongate member having a first elongate portion, a second elongate portion, a first axis member between the first elongate portion and the second elongate portion, pivotally mounting the elongate member to the first mounting member and defining a first axis, a track configured as an arc defined about the first axis, and a first feedback assembly supported upon the second elongate portion and providing a first interface device configured to travel along the track in response to movement of the second elongate portion partly about the first axis, wherein the mass of the second elongate portion and the first feedback assembly substantially offsets the mass of the first elongate portion about the first axis member.. . ... Woodward Inc

02/16/17 / #20170044970

Controlled spark ignited flame kernel flow in fuel-fed prechambers

A pre-chamber spark plug that includes a shell. Additionally, the pre-chamber spark plug includes an insulator disposed within the shell. ... Woodward Inc

01/26/17 / #20170023965

Adaptive pid control system for industrial turbines

The subject matter of this specification can be embodied in, among other things, a method that includes providing a process controller configured to perform a control algorithm based on at least one first control parameter, providing a parameter controller configured to perform a parameter adjustment algorithm, providing a turbine having an output sensor, providing to the process controller at least one first control parameter and a first input value, controlling the turbine based on the at least one first control parameter and the first input value, receiving a turbine response value provided by the turbine output sensor, determining at least one second control parameter based on the turbine response value and the parameter adjustment algorithm, providing, to the process controller from the parameter controller, the at least one second control parameter, and controlling the turbine based on the at the least one second control parameter and a second input value.. . ... Woodward Inc

01/05/17 / #20170002820

Detection and counting of surge cycles in a compressor

The subject matter of this specification can be embodied in, among other things, a method that includes receiving one or more surge value parameters, selecting a first value from a selected parameter of the one of the parameters, determining a moving average, determining a rate of change, identifying a first phase of a surge cycle based on determining that the rate of change exceeds a threshold rate change, memorializing the first value, the moving average value, and a first time index, receiving a second value of the selected parameter, identifying a second phase of the surge cycle, receiving a third value of the selected parameter, identifying a third phase of the surge cycle, and providing an indication that one or more compressor surge cycles have occurred.. . ... Woodward Inc








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