GB1375426A - - Google Patents
Info
- Publication number
- GB1375426A GB1375426A GB3919772A GB3919772A GB1375426A GB 1375426 A GB1375426 A GB 1375426A GB 3919772 A GB3919772 A GB 3919772A GB 3919772 A GB3919772 A GB 3919772A GB 1375426 A GB1375426 A GB 1375426A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- tube
- expansion
- glass
- aug
- 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
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H37/00—Thermally-actuated switches
- H01H37/02—Details
- H01H37/32—Thermally-sensitive members
- H01H37/46—Thermally-sensitive members actuated due to expansion or contraction of a solid
- H01H37/50—Thermally-sensitive members actuated due to expansion or contraction of a solid with extensible wires under tension
Abstract
1375426 Thermal switches CORNING GLASS WORKS 23 Aug 1972 [26 Aug 1971] 39197/72 Heading H1N A high temperature thermostat comprises a metal wire 12 inside a glass or glass-ceramic tube 11, wire 12 having a higher thermal coefficient of linear expansion than tube 11 and being attached to one end 11a of tube 11 and being coupled adjacent the other end with resilient means 16, 19 biased to maintain wire 12 under tension and having normally closed contacts 16b, 19b which open at or above a preselected temperature. Expansion of wire 12 causes contact spring blades 16, 19 to move to the right until the bent end of blade 16 engages adjustable stop 22 when blade 19 continues to move to the right breaking contact. In a second embodiment, Fig. 3 (not shown), the metal wire 32 is kept under tension by an arm 36 of a snap switch 35 (unspecified), and expansion of wire 32 operates switch 35.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17513971A | 1971-08-26 | 1971-08-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1375426A true GB1375426A (en) | 1974-11-27 |
Family
ID=22639081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3919772A Expired GB1375426A (en) | 1971-08-26 | 1972-08-23 |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1375426A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2500586A1 (en) * | 1975-01-09 | 1976-07-15 | Ego Elektro Blanc & Fischer | Boiling plate with a refractory top plate - with plate made of vitrified ceramic material on which pans are placed |
| DE3423086A1 (en) * | 1983-07-07 | 1985-01-17 | Electrovac Gesellschaft mbH, Wien | DEVICE FOR HOT DISPLAY AND FOR CONTROLLING OR LIMITING THE TEMPERATURE OF RADIATION OR CONTACT HEATER FROM ELECTRICAL COOKING EQUIPMENT |
-
1972
- 1972-08-23 GB GB3919772A patent/GB1375426A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2500586A1 (en) * | 1975-01-09 | 1976-07-15 | Ego Elektro Blanc & Fischer | Boiling plate with a refractory top plate - with plate made of vitrified ceramic material on which pans are placed |
| DE3423086A1 (en) * | 1983-07-07 | 1985-01-17 | Electrovac Gesellschaft mbH, Wien | DEVICE FOR HOT DISPLAY AND FOR CONTROLLING OR LIMITING THE TEMPERATURE OF RADIATION OR CONTACT HEATER FROM ELECTRICAL COOKING EQUIPMENT |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| CSNS | Application of which complete specification have been accepted and published, but patent is not sealed |