GB1401954A - Thermal control units - Google Patents

Thermal control units

Info

Publication number
GB1401954A
GB1401954A GB1561971A GB1561971A GB1401954A GB 1401954 A GB1401954 A GB 1401954A GB 1561971 A GB1561971 A GB 1561971A GB 1561971 A GB1561971 A GB 1561971A GB 1401954 A GB1401954 A GB 1401954A
Authority
GB
United Kingdom
Prior art keywords
head
unit
wall
bimetal
threaded
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
GB1561971A
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.)
Otter Controls Ltd
Original Assignee
Otter Controls 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 Otter Controls Ltd filed Critical Otter Controls Ltd
Priority to GB1561971A priority Critical patent/GB1401954A/en
Publication of GB1401954A publication Critical patent/GB1401954A/en
Priority to HK62181A priority patent/HK62181A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/04—Bases; Housings; Mountings
    • H01H37/043—Mountings on controlled apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H2037/5472—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting having an omega form, e.g. the bimetallic snap element having a ring shape with a central tongue

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Cookers (AREA)
  • Apparatus For Making Beverages (AREA)

Abstract

1401954 Thermal switches OTTER CONTROLS Ltd and J C TAYLOR 5 June 1972 [18 May 1971 10 Dec 1971] 15619/71 and 57587/71 Heading H1N [Also in Divisions H2 and H5] A thermal control unit 1 for fitting in an immersion heater head 2 includes a switch actuating member 17 comprising a dished snapacting bimetal 19 which in use is positioned adjacent a wall of the head 2 and so arranged that when it is in the position to which it moves with falling temperature its concave side faces the adjacent wall of the head 2. As shown, bimetal 19 is as that described in Specification 1,401,953. A shaped projection 30 in the wall 27 of head 2 engages the concave side of bimetal 19 for better heat conduction. The cold leads 13, 16 of element 3 engage connectors 12, 15, and unit 1 is secured in head 2 via a threaded earth connection stud 31. In a modification, Fig. 7, unit 32 is identical with unit 1 except that it is externally screw-threaded to enable unit 32 and immersion heater head 38 to be secured in an aperture in a kettle by ring 35 with a second threaded mounting stud 37 and a rubber sealing ring 39 fitting tightly over unit 32 and trapped between head 38 and the inside wall of the kettle.
GB1561971A 1971-05-18 1971-05-18 Thermal control units Expired GB1401954A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1561971A GB1401954A (en) 1971-05-18 1971-05-18 Thermal control units
HK62181A HK62181A (en) 1971-05-18 1981-12-10 Improvements relating to thermal control units

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1561971A GB1401954A (en) 1971-05-18 1971-05-18 Thermal control units
GB5758771 1971-12-10

Publications (1)

Publication Number Publication Date
GB1401954A true GB1401954A (en) 1975-08-06

Family

ID=26251434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1561971A Expired GB1401954A (en) 1971-05-18 1971-05-18 Thermal control units

Country Status (2)

Country Link
GB (1) GB1401954A (en)
HK (1) HK62181A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2446576A1 (en) * 1979-01-15 1980-08-08 Taylor John HEATER CONTROL DEVICE, PARTICULARLY FOR A BOILER OF WATER
US4357520A (en) * 1979-03-23 1982-11-02 Taylor John C Electric water-boiling container having switch-on dry and stream sensitive thermally responsive control units
GB2308510A (en) * 1995-12-18 1997-06-25 Huang Tse Chuan Plug with safety cut-out switch
GB2472631B (en) * 2009-08-13 2014-10-08 Otter Controls Ltd Electrical appliances

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2446576A1 (en) * 1979-01-15 1980-08-08 Taylor John HEATER CONTROL DEVICE, PARTICULARLY FOR A BOILER OF WATER
US4357520A (en) * 1979-03-23 1982-11-02 Taylor John C Electric water-boiling container having switch-on dry and stream sensitive thermally responsive control units
GB2308510A (en) * 1995-12-18 1997-06-25 Huang Tse Chuan Plug with safety cut-out switch
GB2472631B (en) * 2009-08-13 2014-10-08 Otter Controls Ltd Electrical appliances

Also Published As

Publication number Publication date
HK62181A (en) 1981-12-18

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years