Patent application number | Description | Published |
20090056507 | ASSEMBLIES AND METHODS FOR COUPLING A COMPONENT TO AN ACTUATOR - Assemblies and methods are provided for use in coupling a component to an actuator, where the component includes a stem and a drive nut, and the stem is configured to be rotated by the actuator and to move linearly through an opening in the drive nut. In an embodiment, the assembly includes a coupling mechanism, a drive ring, and a carrier, where the coupling mechanism and the carrier each include slots and the drive ring includes projections that correspond with the slots. | 03-05-2009 |
20090211383 | EMERGENCY STOPS AND BRAKE DEVICES FOR MOTORS - An emergency stop for a brake device for a motor includes a blocking device, a spring, and an inhibiting material. The blocking device is movable between a first position, at which it allows rotation of the drive shaft, and a second position, at which it at least substantially stops rotation of a drive shaft of the motor. The spring is housed at least partially within the housing, and urges the blocking device toward the first position. The inhibiting material at least partially surrounds the blocking device and/or the spring, and has a melting point that is at least substantially known. The inhibiting material at least substantially prevents movement of the blocking device from the first to the second position when a temperature is below the melting point, and allows movement of the blocking device from the first to the second position when the temperature is above the melting point. | 08-27-2009 |
20090326783 | FLUID-POWERED THRUST REVERSER ACTUATION SYSTEM SPEED CONTROL - A fluid-powered thrust reverser actuation speed control system and method are provided. A drive fluid is supplied to a fluid-powered drive mechanism that is coupled to a thrust reverser movable component to thereby move the thrust reverser movable component at a first movement speed. A determination is made as to when the thrust reverser movable component attains a predetermined position. In response to the thrust reverser movable component attaining the predetermined position, the drive fluid supplied to the fluid-powered drive mechanism is controlled to thereby move the thrust reverser movable component at a second movement speed that is less than the first movement speed. | 12-31-2009 |
20100025610 | LOW PROFILE VALVE ACTUATOR HAVING HIGH TORQUE OUTPUT - A valve actuator is provided for use in conjunction with a drive motor and a valve. In one embodiment, the valve actuator includes a housing assembly, a first power screw rotatably mounted in the housing assembly and configured to be rotated by the drive motor, a first rack translatably mounted in the housing assembly, and a pinion rotatably mounted in the housing assembly and mechanically linked to the valve. The first rack is threadably coupled to the first power screw and is configured to move linearly as the first power screw rotates. The pinion engages the first rack and is configured to rotate as the first rack moves linearly to move the valve to a desired position. | 02-04-2010 |
20100050796 | HIGH LOAD LIFT AND SHOCK LINEAR ACTUATOR - A high load and shock linear actuator is provided that may be used to position a hatch on a waterborne platform. The actuator includes a power-screw actuator, a manual operator, a bidirectional brake, an actuator motor, and a motor brake. The power-screw actuator is coupled to receive a drive torque from either the actuator motor or the manual operator, and is responsive to this drive torque to position the hatch. The bidirectional brake transfers manual input torque supplied to its input by the manual operator, and prevents torque supplied to its output from being transferred to its input. The actuator motor includes a stator, a rotor, a ring gear, and a differential carrier assembly. The differential carrier assembly is disposed within the rotor inner volume. The motor brake is mounted adjacent the actuator motor and selectively prevents and allows actuator motor rotation. | 03-04-2010 |
20110031424 | HIGH ACCURACY, ZERO BACKLASH ROTARY-TO-LINEAR ELECTROMECHANICAL ACTUATOR - An electromechanical actuator is provided for converting rotary action into linear action, and includes an electric motor, a cable yoke, an output shaft, and a pair of cables. The electric motor is adapted to be selectively energized and is configured, upon being energized to generate a drive torque. The cable yoke is coupled to receive the drive torque and is configured, upon receipt thereof, to rotate about a rotational axis. The output shaft is coupled to receive a drive force and is configured, upon receipt thereof, to translate along a linear axis that is disposed at least substantially perpendicular to the rotational axis. Each cable is wound, in pretension, on a portion of the cable yoke and around a portion of the output shaft. The pair of cables is configured, upon rotation of the cable yoke, to supply the drive force to the output shaft. | 02-10-2011 |
20110177896 | REDUNDANT ELECTROMECHANICAL ACTUATOR FOR CONTROL SURFACES - A redundant electromechanical actuator is provided that includes first and second electric motors, a common output shaft, first and second drive cable drums, first and second driven cable drums, a first cable, and a second cable. The first and second electric motors are each adapted to be controllably energized to supply a drive torque. The common output shaft is coupled to receive the drive torque supplied from one or both of the motors. The first and second drive cable drums are coupled to the common output shaft to receive the drive torque from one or both of the motors. The first and second driven cable drums are each configured, upon being driven, to rotate. The first cable is coupled between the first drive cable drum and the first driven cable drum, and the second cable is coupled between the second drive cable drum and the second driven cable drum. | 07-21-2011 |
20120153753 | ELECTROMECHANICAL BRAKE ACTUATOR MOTOR BRAKE - In some examples, a system includes a brake rotor, a brake armature configured to engage with the brake rotor to substantially fix a rotational position of the brake rotor relative to the brake armature, and a mechanism mechanically coupled to the brake armature. The brake armature may be configured to rotate in a first rotational direction and a second rotational direction substantially opposite the first rotational direction. The mechanism may be configured to maintain the brake armature in a fixed rotational position when a torque applied to the brake armature in a second rotational direction is less than or equal to a threshold torque value. The mechanism also may be configured to permit rotation of the brake armature in the second rotational direction when torque on the brake armature in the second rotational direction exceeds the threshold torque value. | 06-21-2012 |