GB1171300A - Electric Switch - Google Patents

Electric Switch

Info

Publication number
GB1171300A
GB1171300A GB2743269A GB2743269A GB1171300A GB 1171300 A GB1171300 A GB 1171300A GB 2743269 A GB2743269 A GB 2743269A GB 2743269 A GB2743269 A GB 2743269A GB 1171300 A GB1171300 A GB 1171300A
Authority
GB
United Kingdom
Prior art keywords
pin
spring
knee
links
springs
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
GB2743269A
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.)
Allen Bradley Co LLC
Original Assignee
Allen Bradley Co LLC
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 Allen Bradley Co LLC filed Critical Allen Bradley Co LLC
Priority claimed from GB40884/66A external-priority patent/GB1171297A/en
Publication of GB1171300A publication Critical patent/GB1171300A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/62—Manual reset mechanisms which may be also used for manual release with means for preventing resetting while abnormal condition persists, e.g. loose handle arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/044—Systems in which all treatment is given in the central station, i.e. all-air systems
    • F24F3/048—Systems in which all treatment is given in the central station, i.e. all-air systems with temperature control at constant rate of air-flow
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/20—Electrothermal mechanisms with fusible mass
    • H01H71/205—Electrothermal mechanisms with fusible mass using a ratchet wheel kept against rotation by solder
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/501—Means for breaking welded contacts; Indicating contact welding or other malfunction of the circuit breaker
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/02—Details
    • H01H73/18—Means for extinguishing or suppressing arc
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
    • H01H73/22—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release
    • H01H73/30—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism having electrothermal release and no other automatic release reset by push-button, pull-knob or slide

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Breakers (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

1,171,300. Automatic circuit-breakers; snapaction mechanism. ALLEN-BRADLEY CO. 13 Sept., 1966 [20 Sept., 1965], No. 27432/69. Divided out of 1,171,297. Heading H1N. In an automatic circuit breaker the manual actuation and reset mechanism comprises a pair of push buttons 87, 88, Fig. 4, in a casing 6 for attachment to the contact casing and operating to rock a pivoted member 64 connected by a pair of coil springs 70 to the knee pin 72 of toggle links 65, 66 which are connected to the contact carrier at pin 67. In the " on " position (shown) the knee pin 72 is restrained to the right against a lever 96 normally held fixed by the automatic circuit-breaker mechanism. In moving to the "off" position, Fig. 6a, the spring 70 moves over-centre of pin 68 and pulls the pin 72 to the left whereby the links 65, 66 snap upwards to retract the switch contact carrier 3 assisted by carrier return spring units (52, Fig. 1, not shown). A snap-action return reinforced by spring-straining is obtained, when switching on, by means of a spring-loaded lever 75, 78 having an end 77 which latches the knee pin 72 in the " off " position and restrains the return movement until the force in the springs 70 is substantial. Should the springs 70 fail, manual retraction of the contacts is obtained by engagement of a leaf spring 94 on the actuator 64 with the toggle links 65 whereby they are forcibly moved to the left to raise the knee-pin 72. Overload current circuit breaking mechanism operating through relay actuator arm 101 and pin 98a to release trip lever 96 supporting the links 65, 66 is described in Specification 1,171,299.
GB2743269A 1965-09-20 1966-09-13 Electric Switch Expired GB1171300A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48854865A 1965-09-20 1965-09-20
GB40884/66A GB1171297A (en) 1965-09-20 1966-09-13 Electric Switch

Publications (1)

Publication Number Publication Date
GB1171300A true GB1171300A (en) 1969-11-19

Family

ID=26264529

Family Applications (3)

Application Number Title Priority Date Filing Date
GB2743069A Expired GB1171298A (en) 1965-09-20 1966-09-13 Electric Switch
GB2743269A Expired GB1171300A (en) 1965-09-20 1966-09-13 Electric Switch
GB2743169A Expired GB1171299A (en) 1965-09-20 1966-09-13 Automatic Circuit-Breaker

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2743069A Expired GB1171298A (en) 1965-09-20 1966-09-13 Electric Switch

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2743169A Expired GB1171299A (en) 1965-09-20 1966-09-13 Automatic Circuit-Breaker

Country Status (1)

Country Link
GB (3) GB1171298A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9406944D0 (en) * 1994-04-08 1994-06-01 Gen Electric Snap in pushbuttons

Also Published As

Publication number Publication date
GB1171299A (en) 1969-11-19
GB1171298A (en) 1969-11-19

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