GB1203509A - Improvements in or relating to thermally responsive electric switches - Google Patents

Improvements in or relating to thermally responsive electric switches

Info

Publication number
GB1203509A
GB1203509A GB48037/68A GB4803768A GB1203509A GB 1203509 A GB1203509 A GB 1203509A GB 48037/68 A GB48037/68 A GB 48037/68A GB 4803768 A GB4803768 A GB 4803768A GB 1203509 A GB1203509 A GB 1203509A
Authority
GB
United Kingdom
Prior art keywords
solenoid
magnetic
feb
contact
plate
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
GB48037/68A
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1203509A publication Critical patent/GB1203509A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/64—Contacts
    • H01H37/66—Magnetic reinforcement of contact pressure; Magnet causing snap action
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/12—Means for adjustment of "on" or "off" operating temperature

Abstract

1,203,509. Thermal switches. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 10 Oct., 1968 [16 Oct., 1967 (3); 6 Feb., 1968 (2); 7 Feb., 1968; 12 Feb., 1968], No. 48037/68. Heading H1N. The response temperature of thermally responsive bi-metal actuated switches is controlled by varying the current in a solenoid 78, Fig. 6, so that the magnetic flux influences the movement of the contacts 68, 72. In the arrangement shown the moving contact 68 on a spring blade 67 is thermally actuated by a bimetal strip 63 through slotted insulator 64. The normally fixed contact 72 is mounted on a spring blade 71 carrying a magnetic plate 73 influenced by the solenoid 78 from a coaxial polepiece 76. A resilient member 79 of rubber or PVC is arranged between the polepiece 76 and the plate 73. In other examples the solenoid may be mounted on the bi-metal element or fixed contact and may influence either the fixed or movable contact, either of which may be of magnetic material or carry a plate of magnetic material. In a further modification a magnetic bi-metal contact strip 132, Fig. 13, may be mounted in a hermetically sealed capsule of non-magnetic material and surrounded by a solenoid 134. Terminal plates 137, 138 may be hermetically sealed to a bobbin 131 and the inside space may be evacuated or gas-filled.
GB48037/68A 1967-10-16 1968-10-10 Improvements in or relating to thermally responsive electric switches Expired GB1203509A (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP6709067 1967-10-16
JP6709267 1967-10-16
JP6709167 1967-10-16
JP814268 1968-02-06
JP814368 1968-02-06
JP929768 1968-02-07
JP1072068 1968-02-12

Publications (1)

Publication Number Publication Date
GB1203509A true GB1203509A (en) 1970-08-26

Family

ID=27563438

Family Applications (1)

Application Number Title Priority Date Filing Date
GB48037/68A Expired GB1203509A (en) 1967-10-16 1968-10-10 Improvements in or relating to thermally responsive electric switches

Country Status (4)

Country Link
US (1) US3633143A (en)
DE (1) DE1803433A1 (en)
FR (1) FR1586333A (en)
GB (1) GB1203509A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809862A (en) * 1971-09-21 1974-05-07 Gen Electric Oven temperature control
DE4203122C2 (en) * 1992-02-04 1993-11-11 F W Adolf Berger Relay based on shape memory metal
US6496097B2 (en) * 1999-09-21 2002-12-17 General Electric Company Dual circuit temperature controlled switch
US6720538B2 (en) * 2001-06-18 2004-04-13 Homedics, Inc. Thermostat variation compensating knob

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB424014A (en) * 1932-09-12 1935-02-13 British Thomson Houston Co Ltd Improvements in and relating to thermally-operated electric switches
GB568714A (en) * 1943-10-01 1945-04-17 Cav Ltd Improvements relating to thermostatic switches for controlling electric circuits
US2740923A (en) * 1952-05-10 1956-04-03 Honeywell Regulator Co Timing mechanism
DE1104746B (en) * 1956-11-26 1961-04-13 Standard Elektrik Lorenz Ag Constantly acting temperature controller with bimetal sensor

Also Published As

Publication number Publication date
DE1803433A1 (en) 1969-06-19
US3633143A (en) 1972-01-04
FR1586333A (en) 1970-02-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee