GB1203509A - Improvements in or relating to thermally responsive electric switches - Google Patents
Improvements in or relating to thermally responsive electric switchesInfo
- 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
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
Landscapes
- Thermally Actuated Switches (AREA)
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.
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6709267 | 1967-10-16 | ||
| JP6709167 | 1967-10-16 | ||
| JP6709067 | 1967-10-16 | ||
| JP814368 | 1968-02-06 | ||
| JP814268 | 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)
| 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)
| 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 |
-
1968
- 1968-10-10 GB GB48037/68A patent/GB1203509A/en not_active Expired
- 1968-10-15 FR FR169980A patent/FR1586333A/fr not_active Expired
- 1968-10-16 DE DE19681803433 patent/DE1803433A1/en active Pending
-
1970
- 1970-03-23 US US22015A patent/US3633143A/en not_active Expired - Lifetime
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 |