GB2141800B - Feedback control in electric motor/spring actuators, eg for brakes - Google Patents

Feedback control in electric motor/spring actuators, eg for brakes

Info

Publication number
GB2141800B
GB2141800B GB08411814A GB8411814A GB2141800B GB 2141800 B GB2141800 B GB 2141800B GB 08411814 A GB08411814 A GB 08411814A GB 8411814 A GB8411814 A GB 8411814A GB 2141800 B GB2141800 B GB 2141800B
Authority
GB
United Kingdom
Prior art keywords
brakes
electric motor
feedback control
spring actuators
actuators
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB08411814A
Other languages
English (en)
Other versions
GB8411814D0 (en
GB2141800A (en
Inventor
Jack Washbourn
Howard Frederick Cogan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens Mobility Ltd
Original Assignee
Westinghouse Brake and Signal Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB838313102A external-priority patent/GB8313102D0/en
Priority claimed from GB838317063A external-priority patent/GB8317063D0/en
Priority claimed from GB838317064A external-priority patent/GB8317064D0/en
Application filed by Westinghouse Brake and Signal Co Ltd filed Critical Westinghouse Brake and Signal Co Ltd
Publication of GB8411814D0 publication Critical patent/GB8411814D0/en
Publication of GB2141800A publication Critical patent/GB2141800A/en
Application granted granted Critical
Publication of GB2141800B publication Critical patent/GB2141800B/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D65/40—Slack adjusters mechanical
    • F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
    • F16D65/54—Slack adjusters mechanical self-acting in one direction for adjusting excessive play by means of direct linear adjustment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/741—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator
    • B60T13/743—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive acting on an ultimate actuator with a spring accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/74—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive
    • B60T13/746—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with electrical assistance or drive and mechanical transmission of the braking action
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/08—Brake cylinders other than ultimate actuators
    • B60T17/16—Locking of brake cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/18—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution
    • B60T8/1893—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to vehicle weight or load, e.g. load distribution especially adapted for railway vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H1/00—Applications or arrangements of brakes with a braking member or members co-operating with the periphery of the wheel rim, a drum, or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
    • F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
    • F16D55/224—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members
    • F16D55/2245—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a common actuating member for the braking members in which the common actuating member acts on two levers carrying the braking members, e.g. tong-type brakes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
    • F16D65/28—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position arranged apart from the brake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D65/00—Parts or details
    • F16D65/38—Slack adjusters
    • F16D2065/386—Slack adjusters driven electrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D66/00—Arrangements for monitoring working conditions, e.g. wear, temperature
    • F16D2066/005—Force, torque, stress or strain
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2121/00—Type of actuator operation force
    • F16D2121/18—Electric or magnetic
    • F16D2121/24—Electric or magnetic using motors
    • F16D2121/26—Electric or magnetic using motors for releasing a normally applied brake
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/20—Mechanical mechanisms converting rotation to linear movement or vice versa
    • F16D2125/34—Mechanical mechanisms converting rotation to linear movement or vice versa acting in the direction of the axis of rotation
    • F16D2125/40—Screw-and-nut
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/44—Mechanical mechanisms transmitting rotation
    • F16D2125/46—Rotating members in mutual engagement
    • F16D2125/48—Rotating members in mutual engagement with parallel stationary axes, e.g. spur gears
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2125/00—Components of actuators
    • F16D2125/18—Mechanical mechanisms
    • F16D2125/58—Mechanical mechanisms transmitting linear movement
    • F16D2125/582—Flexible element, e.g. spring, other than the main force generating element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2127/00—Auxiliary mechanisms
    • F16D2127/06—Locking mechanisms, e.g. acting on actuators, on release mechanisms or on force transmission mechanisms

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Braking Arrangements (AREA)
  • Transmission Devices (AREA)
  • Control Of Electric Motors In General (AREA)
  • Fluid-Damping Devices (AREA)
  • Vehicle Body Suspensions (AREA)
GB08411814A 1983-05-12 1984-05-09 Feedback control in electric motor/spring actuators, eg for brakes Expired GB2141800B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB838313102A GB8313102D0 (en) 1983-05-12 1983-05-12 Electric actuator
GB838317063A GB8317063D0 (en) 1983-06-23 1983-06-23 Digital electric brake actuator
GB838317064A GB8317064D0 (en) 1983-06-23 1983-06-23 Electric brake actuator

Publications (3)

Publication Number Publication Date
GB8411814D0 GB8411814D0 (en) 1984-06-13
GB2141800A GB2141800A (en) 1985-01-03
GB2141800B true GB2141800B (en) 1986-10-01

Family

ID=27262090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08411814A Expired GB2141800B (en) 1983-05-12 1984-05-09 Feedback control in electric motor/spring actuators, eg for brakes

Country Status (7)

Country Link
US (1) US4532462A (US20100268047A1-20101021-C00003.png)
EP (1) EP0125874B1 (US20100268047A1-20101021-C00003.png)
CA (1) CA1217149A (US20100268047A1-20101021-C00003.png)
DE (1) DE3472708D1 (US20100268047A1-20101021-C00003.png)
ES (1) ES532424A0 (US20100268047A1-20101021-C00003.png)
GB (1) GB2141800B (US20100268047A1-20101021-C00003.png)
IN (2) IN161424B (US20100268047A1-20101021-C00003.png)

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2160025B (en) * 1984-05-30 1987-07-08 Westinghouse Brake & Signal Electric actuators
US4797048A (en) * 1987-09-08 1989-01-10 Xerox Corporation Binding apparatus
US4836338A (en) * 1988-04-19 1989-06-06 Allied-Signal Inc. Electrically operated disc brakes
US4995570A (en) * 1989-03-01 1991-02-26 Datatape Incorporated Reel brake assembly actuated by linear stepper motor
DE4035045A1 (de) * 1990-11-05 1992-05-07 Wilke Richard Elektromotorische bremsbetaetigungsvorrichtung fuer schienenfahrzeuge
US5092432A (en) * 1990-11-30 1992-03-03 Allied-Signal Inc. Mechanical energy storage for vehicle parking brakes
DE4130383A1 (de) * 1991-09-12 1993-03-18 Knorr Bremse Ag Elektromechanischer bremskrafterzeuger
US5180038A (en) * 1992-01-24 1993-01-19 Orscheln Co. Electronically controlled parking brake system
WO1996005093A1 (en) * 1994-08-17 1996-02-22 Nai Anchorlok, Inc. Spring brake actuator with spring force measurement
SE510583C2 (sv) * 1994-10-24 1999-06-07 Sab Wabco Ab Säkerhetsbromsarrangemang i en bromsaktuator
US5601162A (en) * 1994-12-13 1997-02-11 Orscheln Co. Spring applied automative parking brake system
US5553836A (en) * 1995-05-11 1996-09-10 Patentials Incorporated Adjustable suspension system
US5650704A (en) * 1995-06-29 1997-07-22 Massachusetts Institute Of Technology Elastic actuator for precise force control
DE19607759C1 (de) * 1996-03-01 1997-05-28 Korthaus Bernd Dipl Kaufm Elektromotorische Bremsbetätigungsvorrichtung mit einem Federspeicher, insbesondere für Schienenfahrzeuge
GB2351130B (en) * 1996-06-05 2001-02-21 Luk Getriebe Systeme Gmbh Operating device
DE19640995C2 (de) 1996-10-04 1999-07-22 Continental Ag Bremsaktuator für eine elektrische Bremsanlage eines Kraftfahrzeuges
DE59913473D1 (de) * 1998-03-13 2006-07-06 Rohs Voigt Patentverwertungsge Ausrückevorrichtung, insbesondere für eine Kupplung
DE19833304A1 (de) * 1998-07-24 2000-02-10 Daimler Chrysler Ag Vorrichtung zur Bremsenbetätigung
DE19945702A1 (de) * 1999-09-23 2001-04-19 Knorr Bremse Systeme Zuspannvorrichtung für eine Fahrzeugbremse
DE19945701A1 (de) * 1999-09-23 2001-04-19 Knorr Bremse Systeme Bremsaktuator
DE10233673A1 (de) * 2001-07-31 2003-03-20 Tokico Ltd Elektrische Bremsvorrichtung
DE10152423C2 (de) * 2001-10-24 2003-08-21 Lucas Automotive Gmbh Scheibenbremse
FR2836439B1 (fr) * 2002-02-25 2004-05-28 Bosch Gmbh Robert Maitre-cylindre pour systeme de freinage electro-hydraulique comportant des moyens ameliores de simulation de la sensation pedale et systeme de freinage electro-hydraulique comportant un tel maitre-cylindre
US20040064195A1 (en) 2002-07-15 2004-04-01 Hugh Herr Variable-mechanical-impedance artificial legs
US8075633B2 (en) 2003-09-25 2011-12-13 Massachusetts Institute Of Technology Active ankle foot orthosis
DE10361127C5 (de) * 2003-12-22 2013-10-24 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Stelleinrichtung, insbesondere Kraftfahrzeug-Feststellbremse
US8500823B2 (en) * 2005-03-31 2013-08-06 Massachusetts Institute Of Technology Powered artificial knee with agonist-antagonist actuation
US8512415B2 (en) 2005-03-31 2013-08-20 Massachusetts Institute Of Technology Powered ankle-foot prothesis
US11278433B2 (en) 2005-03-31 2022-03-22 Massachusetts Institute Of Technology Powered ankle-foot prosthesis
US20070123997A1 (en) 2005-03-31 2007-05-31 Massachusetts Institute Of Technology Exoskeletons for running and walking
US20070043449A1 (en) 2005-03-31 2007-02-22 Massachusetts Institute Of Technology Artificial ankle-foot system with spring, variable-damping, and series-elastic actuator components
US20060249315A1 (en) 2005-03-31 2006-11-09 Massachusetts Institute Of Technology Artificial human limbs and joints employing actuators, springs, and variable-damper elements
US8864846B2 (en) 2005-03-31 2014-10-21 Massachusetts Institute Of Technology Model-based neuromechanical controller for a robotic leg
US10080672B2 (en) 2005-03-31 2018-09-25 Bionx Medical Technologies, Inc. Hybrid terrain-adaptive lower-extremity systems
US10307272B2 (en) 2005-03-31 2019-06-04 Massachusetts Institute Of Technology Method for using a model-based controller for a robotic leg
US20070162152A1 (en) 2005-03-31 2007-07-12 Massachusetts Institute Of Technology Artificial joints using agonist-antagonist actuators
CA2736079A1 (en) 2008-09-04 2010-03-11 Iwalk, Inc. Hybrid terrain-adaptive lower-extremity systems
US20110082566A1 (en) 2008-09-04 2011-04-07 Herr Hugh M Implementing a stand-up sequence using a lower-extremity prosthesis or orthosis
US20100258390A1 (en) * 2009-04-14 2010-10-14 Culbertson Michael O Hybrid electromechanical actuator brake for wind turbines
KR20130096631A (ko) 2010-04-05 2013-08-30 아이워크, 아이엔씨. 인공기관 또는 정형기구의 토크 제어
EP3040573B1 (en) * 2010-09-07 2017-04-05 NTN Corporation Electric linear motion actuator and electric disc brake device
EP3549558B1 (en) 2011-01-10 2022-03-02 Otto Bock HealthCare LP Powered joint orthosis
EP2663904A2 (en) 2011-01-12 2013-11-20 Iwalk, Inc. Controlling powered human augmentation devices
WO2012100250A1 (en) 2011-01-21 2012-07-26 Iwalk, Inc. Terrain adaptive powered joint orthosis
US9060883B2 (en) 2011-03-11 2015-06-23 Iwalk, Inc. Biomimetic joint actuators
WO2013067407A1 (en) 2011-11-02 2013-05-10 Iwalk, Inc. Biomimetic transfemoral prosthesis
US9032635B2 (en) 2011-12-15 2015-05-19 Massachusetts Institute Of Technology Physiological measurement device or wearable device interface simulator and method of use
US9221177B2 (en) 2012-04-18 2015-12-29 Massachusetts Institute Of Technology Neuromuscular model-based sensing and control paradigm for a robotic leg
US10531965B2 (en) 2012-06-12 2020-01-14 Bionx Medical Technologies, Inc. Prosthetic, orthotic or exoskeleton device
DE102012018144A1 (de) * 2012-09-14 2014-03-20 Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg Aktuator für eine Funktionseinheit eines Kraftfahrzeugs
US9616875B2 (en) 2014-09-11 2017-04-11 Westinghouse Air Brake Technologies Corporation Piston stroke sensor arrangement for a brake unit
US10119873B2 (en) 2014-09-15 2018-11-06 Westinghouse Air Brake Technologies Corporation Brake force sensor arrangement for a brake unit
EP3372495B1 (en) * 2017-03-09 2019-10-23 Ratier-Figeac SAS Brake device

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US212688A (en) * 1879-02-25 Improvement in vehicle-springs
US874219A (en) * 1905-10-30 1907-12-17 James D Leys Brake for power-driven vehicles.
US2218605A (en) * 1939-08-31 1940-10-22 Westinghouse Air Brake Co Electrically controlled brake
US2482464A (en) * 1942-09-25 1949-09-20 Garrett Corp Electrical jack and control means
GB586256A (en) * 1944-12-19 1947-03-12 Rotax Ltd Improvements relating to electromagnetically-operated jack-type actuators
US2418351A (en) * 1945-03-14 1947-04-01 Gen Motors Corp Actuator control
US2446393A (en) * 1945-06-14 1948-08-03 Eaton Mfg Co Screw-threaded mechanical movement
US2479019A (en) * 1947-12-03 1949-08-16 Bendix Aviat Corp Actuator nut
US3039758A (en) * 1953-07-29 1962-06-19 Gratzmuller Jean Louis Return-spring system in a pressure-fluid cylinder
US2756014A (en) * 1954-03-15 1956-07-24 C H Leibfried Mfg Corp Spring hangers
CH372099A (de) * 1959-09-02 1963-09-30 Inventio Ag Elektromechanische Bremse
US3013624A (en) * 1960-10-13 1961-12-19 Various Assignees Automatic brake control for automotive vehicles
US3159758A (en) * 1962-03-27 1964-12-01 Bendix Corp Rotary motor driven nonjamming linear actuator
DE1431129B1 (de) * 1964-04-25 1970-07-30 Rudolf Betzing Elektrischer Motorbremsluefter
US3399879A (en) * 1965-02-20 1968-09-03 Tokyo Keiki Seizosho Co Ltd Shock preventive means for nautical meters
DE1506551A1 (de) * 1967-05-31 1970-10-22 Rudolf Betzing Elektrischer Motorbremsluefter
DE1921252B2 (de) * 1969-04-25 1973-03-01 Betzing, Rudolf, 4270 Altendorf-Ulfkotte Schraubgetriebe fuer mechanisches stellzeug, insbesondere bremsluefter
CH591350A5 (US20100268047A1-20101021-C00003.png) * 1975-05-30 1977-09-15 Bbc Brown Boveri & Cie
US4463291A (en) * 1979-12-31 1984-07-31 Andale Company Automatic control system and valve actuator
DE3010335C2 (de) * 1980-03-18 1982-12-09 Helmut 5600 Wuppertal Korthaus Arbeitsverfahren für eine elektromotorische Bremsbetätigungsvorrichtung insbesondere bei Schienenfahrzeugen und Vorrichtung zur Durchführung des Verfahrens
US4364111A (en) * 1980-05-20 1982-12-14 Westran Corporation Electronically controlled valve actuator
US4393319A (en) * 1980-12-08 1983-07-12 General Motors Corporation Electric motor powered actuator
GB2101355B (en) * 1981-04-30 1985-01-16 Rotork Controls Control of valve actuator

Also Published As

Publication number Publication date
EP0125874B1 (en) 1988-07-13
DE3472708D1 (en) 1988-08-18
ES8503090A1 (es) 1985-02-01
CA1217149A (en) 1987-01-27
IN161424B (US20100268047A1-20101021-C00003.png) 1987-11-28
GB8411814D0 (en) 1984-06-13
EP0125874A2 (en) 1984-11-21
GB2141800A (en) 1985-01-03
EP0125874A3 (en) 1985-05-02
ES532424A0 (es) 1985-02-01
US4532462A (en) 1985-07-30
IN161427B (US20100268047A1-20101021-C00003.png) 1987-11-28

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