Eric Patricia Polcuch

US Patent:

6722485, Apr 20, 2004

Filed:

Oct 8, 2002

Appl. No.:

10/266710

Inventors:

Seth E. Gitnes - Everett WA
William H. House - Torrance CA
Kenneth K. Nakashima - Issaquah WA
Eric A. Polcuch - San Pedro CA

Assignee:

Moog Inc. - East Aurora NY

International Classification:

B60T 712

US Classification:

1922231, 74 8939, 188 822, 188 827

Abstract:

A force-limiting rotary lock ( ) for a shaft ( ) mounted on a housing ( ) for rotational and axial movement relative thereto, broadly includes a lug member ( ) provided on the shaft, and a pawl ( ) mounted on the housing. The pawl is movable relative to the housing between first and second positions. The pawl is operatively arranged to engage the lug when the pawl is in its first position (shown in FIG. 3) to prevent further rotation of the shaft in one angular direction, and to be disengaged from the lug when the pawl is in its second position (shown in FIG. 2) to permit rotation of the shaft in either angular direction. A cam ( ) is mounted on the shaft, and a follower ( ) is mounted on the housing for selectively moving the pawl between the first and second positions when the shaft is axially displaced from its predetermined position. When the shaft is axially displaced from its predetermined position and the pawl engages the lug, the shaft will be prevented from rotating further in the one angular direction.

US Patent:

6827183, Dec 7, 2004

Filed:

Aug 27, 2003

Appl. No.:

10/648900

Inventors:

Eric A. Polcuch - San Pedro CA

Assignee:

Moog Inc. - East Aurora NY

International Classification:

F16H 2702

US Classification:

188134, 188 713, 1922233, 192934

Abstract:

A skewed roller brake assembly ( ) has a main axis of rotation (xâx), has a first plate ( ) adapted to be rotated about the main axis, has a second plate ( ) adapted to be rotated relative to the first plate about the main axis, and has an intermediate plate ( ) positioned between the first and second plates. The first and second plates are adapted to be axially loaded with respect to one another. The intermediate plate has a plurality of slots ( ). Each slot is bounded by a first wall ( ) that is arranged at a first angle ( ) with respect to a radius from the main axis. A cylindrical roller ( ) is arranged in each slot for rolling engagement with the first and second plates about the axis of the roller such that the roller axis (yây) is parallel to the first wall when the first and second plates are rotated relative to one another in one angular direction. The slot has a second wall ( ) arranged at a second angle ( ) with respect to a radius from the main axis such that the roller axis is parallel to the second wall when the first and second plates are rotated relative to one another in the opposite angular direction. The resistance to relative rotation between the first and second plates for the same value of axial loading may differ as a function of the direction of relative angular rotation between the first and second plates.

US Patent:

6922991, Aug 2, 2005

Filed:

Aug 27, 2003

Appl. No.:

10/648902

Inventors:

Eric A. Polcuch - San Pedro CA, US

Assignee:

Moog Inc. - East Aurora NY

International Classification:

F16B031/02

US Classification:

60468, 60489

Abstract:

A pressure-control device () includes a controllable variable-displacement reversible hydraulic motor () having a pressure port () and a return port (); a source of pressurized fluid (P); a fluid return (R); and a pressure regulating valve () operatively interposed between the source, return and pressure port. The pressure regulating valve is operatively arranged to maintain a predetermined pressure at the pressure port regardless of the direction of flow through the pressure port.

US Patent:

7015670, Mar 21, 2006

Filed:

May 14, 2004

Appl. No.:

10/845626

Inventors:

Eric A. Polcuch - San Pedro CA, US

Assignee:

Moog Inc. - East Aurora NY

International Classification:

G05B 19/18
G05B 11/01

US Classification:

318632, 318560, 318614, 318615, 318626, 318493, 318494, 318495

Abstract:

The invention provides a method for controlling an electromechanical servomechanism () for moving an output member relative to a variable load (). The servomechanism includes: a motor () having at least one coil (A, B or C) adapted to be supplied with current and having a rotor () with an output shaft (); a mechanical transmission () arranged between the output shaft and the load, the transmission having a mechanical friction related to the load; a servoamplifier () arranged to supply current to the motor coil in response to an input signal (in line ); a command signal (in line ) for commanding the position of the load; a load position feedback signal (in line ) compared (in summing point ) to the command signal and arranged to produce an error signal (in line ); and means () for generating an offset signal (in line ) that is summed (in summing point ) with the error signal to modify the servoamplifier input signal (in line ). The improved method comprises the steps of: generating the offset signal as a function of the command and feedback signals and the currents supplied to the motor coil after the position of the output member as remained substantially constant for a predetermined time; and adjusting the offset signal so that the motor current is reduced until the position of the output member changes so as to minimize the steady-state power dissipation in the motor.

US Patent:

20030114265, Jun 19, 2003

Filed:

Dec 19, 2001

Appl. No.:

10/025305

Inventors:

Lowell Larson - Huntington Beach CA, US
Mark Mourani - Huntington Beach CA, US
Eric Polcuch - San Pedro CA, US

Assignee:

Moog Inc.

International Classification:

F16H048/06
F16H048/20
B60K041/04

US Classification:

475/249000, 477/035000

Abstract:

A differential coupling () has a body (), a rotary input member (), and two rotary output shafts (). The algebraic sum of the angular displacements of the output shafts is proportional to the rotation of the input member. The improvement includes mechanical means (), such as a planetary gear (), for sensing a torque differential between the output shafts, and a brake () mounted on the body and operatively arranged to selectively brake rotation of the input member, or both output members, when the difference between the torques on the outputs exceeds a predetermined first value.

US Patent:

20080203223, Aug 28, 2008

Filed:

Jun 22, 2007

Appl. No.:

11/766815

Inventors:

Luc P. Cyrot - Mission Viejo CA, US
Eric A. Polcuch - Mission Viejo CA, US

International Classification:

B64C 13/16

US Classification:

244 993

Abstract:

An actuator () for actuating translation movement of a component () (e.g., a horizontal stabilizer) relative to a structure () (e.g., an aircraft's rear fuselage). The actuator () comprises a control-motion-providing assembly () having a drive path from a motion provider () to the component (), a motion-permit-prevent assembly (), and a sensing system () which senses a failure in the drive path. The motion-permit-prevent assembly () comprises a screw member (), which is not part of the drive path, and a nut member (). Upon detection drive-path failure by the sensing system (), the motion-permit-prevent assembly () converts from a motion-permitting mode (whereat relative rotation between the screw-nut members () is permitted) to a motion-preventing mode (whereat relative rotation of the screw-nut members () is prevented). In the motion-preventing mode, the component () is locked or immobilized.

US Patent:

20110048147, Mar 3, 2011

Filed:

Sep 1, 2010

Appl. No.:

12/873996

Inventors:

Nancy Kay Keech - Long Beach CA, US
Luc P. Cyrot - Mission Viejo CA, US
Eric A. Polcuch - Mission Viejo CA, US

International Classification:

B64C 13/34
F16H 37/00
F16H 25/20
G01D 21/00

US Classification:

74 8926, 74 89, 738658

Abstract:

An actuator for actuating movement of a control surface relative to a structure can include a high-efficiency assembly and a low-efficiency assembly. The high-efficiency assembly can be connectable between a control surface and a structure for providing a first load transfer assembly and the assembly can have minimum backlash. The low-efficiency assembly is connectable between the control surface and the structure for providing a second load transfer assembly. The low-efficiency or irreversible assembly can be disposed in parallel relationship to the high-efficiency assembly and can have a higher backlash than the low-efficiency assembly. The low-efficiency assembly can be unloaded in normal operation. The actuator also can include a coupler for that can have a closed state in which both load transfer assemblies are synchronously driven by the drive mechanism, and an open state in which the drive mechanism is decoupled from the low-efficiency assembly and the low-efficiency assembly can inhibit movement of the control surface.

US Patent:

20120018578, Jan 26, 2012

Filed:

Jul 21, 2011

Appl. No.:

13/187726

Inventors:

Eric A. Polcuch - Mission Viejo CA, US

Assignee:

PARKER-HANNIFIN CORPORATION - Cleveland OH

International Classification:

B64C 13/26
H02P 8/40
H02P 1/46
H02P 5/74

US Classification:

244 992, 318730, 318696, 318701

Abstract:

A distributed electromechanical actuation system including multiple electromechanical actuators intended to operate together in a synchronous (or near synchronous) manner. Each individual actuator is powered by one or more induction motors or other appropriate motor such as a stepper motor. The induction motors are designed to have a very high pullout torque with very low slippage to the pull out point. The group of actuators is controlled from a single controller (e.g., an induction motor controller) that utilizes a Volts per Hertz type of open loop control where the bus voltage and frequency are controlled to assure that the motors always operate on the low slip side of the pull out point performance curve.