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GB1413476A - Speed control for dc motors - Google Patents

Speed control for dc motors

Info

Publication number
GB1413476A
GB1413476A GB5220271A GB5220271A GB1413476A GB 1413476 A GB1413476 A GB 1413476A GB 5220271 A GB5220271 A GB 5220271A GB 5220271 A GB5220271 A GB 5220271A GB 1413476 A GB1413476 A GB 1413476A
Authority
GB
United Kingdom
Prior art keywords
motors
moved
lever
cams
opposite directions
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
GB5220271A
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.)
CAV Ltd
Original Assignee
CAV 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
Application filed by CAV Ltd filed Critical CAV Ltd
Priority to GB5220271A priority Critical patent/GB1413476A/en
Priority to ZA727726A priority patent/ZA727726B/en
Priority to CA155,270A priority patent/CA990782A/en
Priority to IT53870/72A priority patent/IT973432B/en
Priority to ES408658A priority patent/ES408658A1/en
Priority to FR7239887A priority patent/FR2160163A5/fr
Priority to US00305507A priority patent/US3854079A/en
Priority to JP47112193A priority patent/JPS529806B2/ja
Priority to DE2255015A priority patent/DE2255015C3/en
Priority to ES435937A priority patent/ES435937A1/en
Publication of GB1413476A publication Critical patent/GB1413476A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
    • H02P7/29—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual DC dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using pulse modulation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G2203/00—General characteristics of devices
    • A61G2203/10—General characteristics of devices characterised by specific control means, e.g. for adjustment or steering
    • A61G2203/14—Joysticks

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

1413476 Motor controllers CAV Ltd 30 Oct 1972 [10 Nov 1971] 52202/71 Heading HIS [Also in Division H2] Two motor speed controls each including a potentiometer 14 (see Division H2) are incorporated in a single bar and coupled through gearing 15, 16 to a single control lever 17 which is biased to a central position by cams 18 and spring-loaded followers 20. When the lever is moved to left or right, the potentiometer sliders are moved in opposite directions so that the motors rotate in opposite directions, and when the lever is moved into or out of the plane of the drawing, both motors drive in the same direction. Switches 19 actuated by cams 18 control the polarity connections to the motors.
GB5220271A 1971-11-10 1971-11-10 Speed control for dc motors Expired GB1413476A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
GB5220271A GB1413476A (en) 1971-11-10 1971-11-10 Speed control for dc motors
ZA727726A ZA727726B (en) 1971-11-10 1972-10-31 Speed control for d.c.motors
CA155,270A CA990782A (en) 1971-11-10 1972-10-31 Speed control for d.c. motors
IT53870/72A IT973432B (en) 1971-11-10 1972-11-08 SPEED CONTROL DEVICE FOR DIRECT CURRENT MOTORS
ES408658A ES408658A1 (en) 1971-11-10 1972-11-08 Speed control for d. c. motors
FR7239887A FR2160163A5 (en) 1971-11-10 1972-11-10
US00305507A US3854079A (en) 1971-11-10 1972-11-10 Speed control for d. c. motors
JP47112193A JPS529806B2 (en) 1971-11-10 1972-11-10
DE2255015A DE2255015C3 (en) 1971-11-10 1972-11-10 Oscillator circuit
ES435937A ES435937A1 (en) 1971-11-10 1975-03-24 Speed control for d. c. motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5220271A GB1413476A (en) 1971-11-10 1971-11-10 Speed control for dc motors

Publications (1)

Publication Number Publication Date
GB1413476A true GB1413476A (en) 1975-11-12

Family

ID=10463018

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5220271A Expired GB1413476A (en) 1971-11-10 1971-11-10 Speed control for dc motors

Country Status (9)

Country Link
US (1) US3854079A (en)
JP (1) JPS529806B2 (en)
CA (1) CA990782A (en)
DE (1) DE2255015C3 (en)
ES (2) ES408658A1 (en)
FR (1) FR2160163A5 (en)
GB (1) GB1413476A (en)
IT (1) IT973432B (en)
ZA (1) ZA727726B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076039A1 (en) * 1981-08-31 1983-04-06 Capax Electrische Apparatenfabriek B.V. Speed control for power tools having a DC motor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2617883A1 (en) * 1976-04-23 1977-11-10 Bosch Gmbh Robert PULSE CONTROL CIRCUIT FOR ELECTRIC CONSUMERS
US4233549A (en) * 1978-12-08 1980-11-11 Baxter Travenol Laboratories, Inc. Speed and torque control for fractional horsepower motors
US4325011A (en) * 1980-01-31 1982-04-13 Peterson Donovan F Pulse width modulation control circuit
US5526460A (en) * 1994-04-25 1996-06-11 Black & Decker Inc. Impact wrench having speed control circuit
GB0128844D0 (en) * 2001-12-01 2002-01-23 Westland Helicopters Power control device
US11050368B2 (en) * 2019-01-25 2021-06-29 Shenzhen H&T Intelligent Control Co., Ltd. Apparatus for controlling rotation speed of motor, motor and food processing equipment

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1341960A (en) * 1961-12-29 1963-11-02 Philips Nv Astable multivibrator
GB1196244A (en) * 1966-07-26 1970-06-24 Cableform Ltd Improvements relating to Electrically Propelled Invalid Carriages
BE696125A (en) * 1967-03-24 1967-09-24
US3617845A (en) * 1970-04-27 1971-11-02 Applied Motors Inc Energy-conserving control circuit using power transistors
JPS5141248B1 (en) * 1970-12-26 1976-11-09

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076039A1 (en) * 1981-08-31 1983-04-06 Capax Electrische Apparatenfabriek B.V. Speed control for power tools having a DC motor

Also Published As

Publication number Publication date
JPS4858330A (en) 1973-08-16
ES408658A1 (en) 1976-03-01
US3854079A (en) 1974-12-10
DE2255015C3 (en) 1979-09-13
ES435937A1 (en) 1976-12-16
JPS529806B2 (en) 1977-03-18
FR2160163A5 (en) 1973-06-22
ZA727726B (en) 1973-06-27
CA990782A (en) 1976-06-08
DE2255015A1 (en) 1973-05-17
IT973432B (en) 1974-06-10
DE2255015B2 (en) 1979-01-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
429A Application made for amendment of specification (sect. 29/1949)
429H Application (made) for amendment of specification now open to opposition (sect. 29/1949)
429D Case decided by the comptroller ** specification amended (sect. 29/1949)
SP Amendment (slips) printed
PCNP Patent ceased through non-payment of renewal fee