GB1208069A - Brake control circuit - Google Patents

Brake control circuit

Info

Publication number
GB1208069A
GB1208069A GB1181768A GB1181768A GB1208069A GB 1208069 A GB1208069 A GB 1208069A GB 1181768 A GB1181768 A GB 1181768A GB 1181768 A GB1181768 A GB 1181768A GB 1208069 A GB1208069 A GB 1208069A
Authority
GB
United Kingdom
Prior art keywords
solenoid
solenoids
relay
energized
contacts
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
GB1181768A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1208069A publication Critical patent/GB1208069A/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
    • F16D59/00—Self-acting brakes, e.g. coming into operation at a predetermined speed
    • F16D59/02—Self-acting brakes, e.g. coming into operation at a predetermined speed spring-loaded and adapted to be released by mechanical, fluid, or electromagnetic means

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

1,208,069. Electro-magnetically controlled brakes. GENERAL ELECTRIC CO. 11 March, 1968 [3 April, 1967], No. 11817/68. Heading F2E. Brake solenoids 10, 12 are energized with halfwave rectified current from an A.C. source 14 to hold off brake shoes (not shown) from a brake drum on an electric motor shaft, when the motor is switched on. The solenoids initially receive a high pull in current via normally closed contacts 20, contacts 26 (which are closed on energization of a relay coil 22), and relay coil 28. After the solenoids have become fully energized, the relay 28 opens contacts 20 and a resistor 18 is inserted in series with the solenoids to reduce the current therein to a minimum level necessary to hold off the brake shoes. On switching off the supply to the motor and solenoid circuit, relay 22 is de-energized and relay contacts 34 open, thereby inserting a resistor 32 in a closed loop discharge current path of solenoid 10 causing it to be de-energized rapidly, thus allowing rapid brake application, while solenoid 12 is discharged through a closed loop including a diode 36 and a conductor 38 and which loop being a lower resistance the discharge of energy from solenoid 12 is slower than that of solenoid 10 resulting in a delayed braking action. Alternatively, the solenoid 12 may be omitted.
GB1181768A 1967-04-03 1968-03-11 Brake control circuit Expired GB1208069A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62775567A 1967-04-03 1967-04-03

Publications (1)

Publication Number Publication Date
GB1208069A true GB1208069A (en) 1970-10-07

Family

ID=24515997

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1181768A Expired GB1208069A (en) 1967-04-03 1968-03-11 Brake control circuit

Country Status (2)

Country Link
DE (1) DE1763036A1 (en)
GB (1) GB1208069A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236365A (en) * 1989-09-28 1991-04-03 Mitsubishi Electric Corp Electromagnetic braking device for an elevator
CN102139822A (en) * 2011-01-19 2011-08-03 安徽广德昌立制动器有限公司 Uniform velocity brake control device for tandem electromagnetic brake

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2236365A (en) * 1989-09-28 1991-04-03 Mitsubishi Electric Corp Electromagnetic braking device for an elevator
GB2236365B (en) * 1989-09-28 1993-12-08 Mitsubishi Electric Corp Elevator system and brake system for an elevator
CN102139822A (en) * 2011-01-19 2011-08-03 安徽广德昌立制动器有限公司 Uniform velocity brake control device for tandem electromagnetic brake

Also Published As

Publication number Publication date
DE1763036A1 (en) 1971-09-30

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees