GB383299A - Improvements in and relating to thermal overload release mechanism for protecting electric motors - Google Patents

Improvements in and relating to thermal overload release mechanism for protecting electric motors

Info

Publication number
GB383299A
GB383299A GB16583/31A GB1658331A GB383299A GB 383299 A GB383299 A GB 383299A GB 16583/31 A GB16583/31 A GB 16583/31A GB 1658331 A GB1658331 A GB 1658331A GB 383299 A GB383299 A GB 383299A
Authority
GB
United Kingdom
Prior art keywords
electric motors
switch
relating
june
spindle
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
GB16583/31A
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 GB383299A publication Critical patent/GB383299A/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
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H01H71/162—Electrothermal mechanisms with bimetal element with compensation for ambient temperature

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
  • Control Of Multiple Motors (AREA)
  • Protection Of Generators And Motors (AREA)

Abstract

383,299. Electrically-tripped switches. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A. -(Assignees of Allgemeine Elektricitõts- Ges. ; 2, Friedrich Karl-Ufer, Berlin.) June 6, 1931, No. 16583. Convention date, June 6, 1930. [Class 38 (v).] A thermally - tripped overload switch for protecting electric motors comprises one or more bimetallic strips b traversed by current of two of the phases of the motor and adapted to engage arms e on a spindle d, rotating the spindle and causing an arm c to engage the releasing .finger f of switch mechanism g, the arm c being also bimetallic so as'to compensate for variations of atmospheric temperature. In some arrangements over or under-compensation is provided for but usually exact compensation is required so that the switch will always operate at the same overload. Specifications 196,147 and 234,654, [both in Class 38 (v), Electric switches &c.], are referred to.
GB16583/31A 1930-06-06 1931-06-06 Improvements in and relating to thermal overload release mechanism for protecting electric motors Expired GB383299A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE383299X 1930-06-06

Publications (1)

Publication Number Publication Date
GB383299A true GB383299A (en) 1932-11-17

Family

ID=6363925

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16583/31A Expired GB383299A (en) 1930-06-06 1931-06-06 Improvements in and relating to thermal overload release mechanism for protecting electric motors

Country Status (1)

Country Link
GB (1) GB383299A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744477C (en) * 1933-05-26 1944-01-17 Schiele Industriewerke Inhaber Multi-pole overcurrent release device
DE1124135B (en) * 1959-07-15 1962-02-22 Continental Elektro Ind Ag Thermal release for motor protection switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744477C (en) * 1933-05-26 1944-01-17 Schiele Industriewerke Inhaber Multi-pole overcurrent release device
DE1124135B (en) * 1959-07-15 1962-02-22 Continental Elektro Ind Ag Thermal release for motor protection switch

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