GB691223A - Improvements in thermostat devices - Google Patents
Improvements in thermostat devicesInfo
- Publication number
- GB691223A GB691223A GB5236/51A GB523651A GB691223A GB 691223 A GB691223 A GB 691223A GB 5236/51 A GB5236/51 A GB 5236/51A GB 523651 A GB523651 A GB 523651A GB 691223 A GB691223 A GB 691223A
- Authority
- GB
- United Kingdom
- Prior art keywords
- thermal
- march
- push rod
- contacts
- snap
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/275—Control of temperature characterised by the use of electric means with sensing element expanding, contracting, or fusing in response to changes of temperature
- G05D23/27535—Details of the sensing element
- G05D23/27541—Details of the sensing element using expansible solid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Push-Button Switches (AREA)
- Thermally Actuated Switches (AREA)
Abstract
691,223. Thermal switches. PIERCE FOUNDATION, J. B. March 5, 1951 [March 16, 1950], No. 5236/51. Class 38(v) In a thermal switch differential expansion of a rod 19 and sleeve 17 actuates through multiplying levers 24, 25 a snap-over disc 35 which in turn actuates switch contacts. To effect this the disc 35, in moving to its other configuration may operate a push rod 37 carrying a contact-carrying member 39 thereby moving contacts out of engagement with fixed contacts. The above action takes place against the action of two return springs 52 which are however too weak to return the snap spring to its original configuration. This latter is effected by means of a key which is inserted through a hole 54 and is pressed against the push rod 37. Alternatively the thermal elements may reset the snap spring.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US691223XA | 1950-03-16 | 1950-03-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB691223A true GB691223A (en) | 1953-05-06 |
Family
ID=22086878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5236/51A Expired GB691223A (en) | 1950-03-16 | 1951-03-05 | Improvements in thermostat devices |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB691223A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2284506A (en) * | 1993-12-03 | 1995-06-07 | Electrovac | Thermostat |
-
1951
- 1951-03-05 GB GB5236/51A patent/GB691223A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2284506A (en) * | 1993-12-03 | 1995-06-07 | Electrovac | Thermostat |
US5627507A (en) * | 1993-12-03 | 1997-05-06 | Electrovac, Fabrikation Elektronischer Spezialartikel Gesellschaft M.B.H. | Temperature control device with a spring-biased stem and a switch spring of bridge-like configuration |
GB2284506B (en) * | 1993-12-03 | 1998-03-11 | Electrovac | Thermostat |
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