GB619943A - Improvements in and relating to fluid-actuated electric switches - Google Patents

Improvements in and relating to fluid-actuated electric switches

Info

Publication number
GB619943A
GB619943A GB23856/44A GB2385644A GB619943A GB 619943 A GB619943 A GB 619943A GB 23856/44 A GB23856/44 A GB 23856/44A GB 2385644 A GB2385644 A GB 2385644A GB 619943 A GB619943 A GB 619943A
Authority
GB
United Kingdom
Prior art keywords
energized
winding
valve
relating
fluid
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
GB23856/44A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB619943A publication Critical patent/GB619943A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/28—Power arrangements internal to the switch for operating the driving mechanism
    • H01H33/30—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator
    • H01H33/32—Power arrangements internal to the switch for operating the driving mechanism using fluid actuator pneumatic

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

619,943. Electromagnets. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 29, 1944, No. .23856. Convention date, Nov. 29, 1943. [Class 35] [Also in Group XXXVII] In an electric switch operated -by fluidpressure, a valve 38 carrying an armature 44 is opened by energizing a winding 49. When the valve is fully open it is held by a permanent magnet 48 and the winding 49 is de-energized. Then a winding 67 or 71 is energized as the switch closes under normal or short-circuit conditions respectively. Either of the windings 67, 71, when energized, neutralizes the permanent magnet and allows the valve to reclose. Specifications 548,520 and 619.944, [both in Group XXXVII]. are referred to.
GB23856/44A 1943-11-29 1944-11-29 Improvements in and relating to fluid-actuated electric switches Expired GB619943A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US512179A US2381336A (en) 1943-11-29 1943-11-29 Control of electric switches

Publications (1)

Publication Number Publication Date
GB619943A true GB619943A (en) 1949-03-17

Family

ID=24038027

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23856/44A Expired GB619943A (en) 1943-11-29 1944-11-29 Improvements in and relating to fluid-actuated electric switches

Country Status (2)

Country Link
US (1) US2381336A (en)
GB (1) GB619943A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578349A (en) * 1948-05-14 1951-12-11 Allis Chalmers Mfg Co Dump valve for a circuit breaker pneumatic motor
US2676779A (en) * 1949-09-29 1954-04-27 Westinghouse Electric Corp High-speed inlet valve for fluid operated mechanism

Also Published As

Publication number Publication date
US2381336A (en) 1945-08-07

Similar Documents

Publication Publication Date Title
GB551433A (en) Improvements in electromagnetic relays
GB619943A (en) Improvements in and relating to fluid-actuated electric switches
GB517001A (en) Improvements relating to electromagnetic relays
GB559453A (en) Improvements relating to magnetically operated electrical switches
GB727968A (en) Improvements in or relating to electric calculating machines
GB625541A (en) Improvements relating to electrical relays
GB437955A (en) Improvements in or relating to magnets
GB983303A (en) Electrical relays
GB1174644A (en) Improvements in or relating to Switching Arrangements including Electromagnetically-Actuated Relays
GB566075A (en) Improvements in or relating to automatic contactors or switches of the change-over and simple on-off types
GB515529A (en) Improvements in or relating to electromagnetic relays
GB587059A (en) Rotary magnetic switch
GB548326A (en) Improvements in starting systems for electric motors
GB1178278A (en) Improvements relating to Biased Electrical Relays.
GB580278A (en) Improvements in or relating to electromagnetic circuit controllers
GB584050A (en) Improvements in or relating to electromagnetic switches and relays
GB617680A (en) Improvements relating to electro-magnetic separators
GB587089A (en) Improvements relating to electro-magnetic switches
GB569319A (en) Improvements relating to electrical relays
GB599548A (en) Improvements in or relating to mercury arc rectifiers
GB194117A (en) Improvements in and relating to electromagnets
GB571569A (en) Lock-out means for electric contactors and the like electric circuit-breaking devices
GB529396A (en) Improvements in high speed switches for alternating current circuits
GB776937A (en) Improved circuit arrangement for braking direct current motors
GB564935A (en) Improvements in or relating to electrical overload and like cut-out arrangements