GB1401954A - Thermal control units - Google Patents
Thermal control unitsInfo
- 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
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.
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)
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 |
-
1971
- 1971-05-18 GB GB1561971A patent/GB1401954A/en not_active Expired
-
1981
- 1981-12-10 HK HK62181A patent/HK62181A/en unknown
Cited By (4)
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 |