GB665569A - An improved thermally operable electric switch - Google Patents
An improved thermally operable electric switchInfo
- Publication number
- GB665569A GB665569A GB2483649A GB2483649A GB665569A GB 665569 A GB665569 A GB 665569A GB 2483649 A GB2483649 A GB 2483649A GB 2483649 A GB2483649 A GB 2483649A GB 665569 A GB665569 A GB 665569A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pair
- piece
- central part
- switch
- bow
- 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
- H01H37/52—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
- H01H2037/5463—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting the bimetallic snap element forming part of switched circuit
-
- 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
- H01H37/5418—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting using cantilevered bimetallic snap elements
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Thermally Actuated Switches (AREA)
Abstract
665,569. Thermal switches. LUCAS, Ltd., J. July 20, 1950. [Sept. 28, 1949] No. 24836/49. Class 38 (v). [Also in Group XIII] A thermally operated switch for interrupting a circuit in the event of excessive current flowing in the circuit, comprises a bimetallic element c having a pair of slots f, a straining piece h to bow or strain the part g between the slots, a support b for one end of the element and a contact d at the free end of the element co-operating with a fixed contact e. The piece h is a metal strip which at its ends i is bent to form a pair of abutments engaging the central part g of the element and at its sides has a pair of lugs j which engage the underside of the part g. Thus the straining piece h bows the central part g and so stresses the bimetallic element c that when the current flowing in the element reaches a predetermined amount, the element moves with a snap-action to open the contacts d, e. A second fixed contact may be provided so that the switch may function as a changeover switch. Instead of the lugs j a screw may be associated with the straining piece h to bow the central part g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2483649A GB665569A (en) | 1949-09-28 | 1949-09-28 | An improved thermally operable electric switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2483649A GB665569A (en) | 1949-09-28 | 1949-09-28 | An improved thermally operable electric switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB665569A true GB665569A (en) | 1952-01-23 |
Family
ID=10217993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2483649A Expired GB665569A (en) | 1949-09-28 | 1949-09-28 | An improved thermally operable electric switch |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB665569A (en) |
-
1949
- 1949-09-28 GB GB2483649A patent/GB665569A/en not_active Expired
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