GB543935A - Improvements in or relating to electric switches and relays - Google Patents
Improvements in or relating to electric switches and relaysInfo
- Publication number
- GB543935A GB543935A GB7264/41A GB726441A GB543935A GB 543935 A GB543935 A GB 543935A GB 7264/41 A GB7264/41 A GB 7264/41A GB 726441 A GB726441 A GB 726441A GB 543935 A GB543935 A GB 543935A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercury
- contact
- switch
- contacts
- armature
- 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
- H01H1/00—Contacts
- H01H1/06—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved
- H01H1/08—Contacts characterised by the shape or structure of the contact-making surface, e.g. grooved wetted with mercury
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B16/00—Use of organic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of organic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B16/04—Macromolecular compounds
- C04B16/08—Macromolecular compounds porous, e.g. expanded polystyrene beads or microballoons
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Contacts (AREA)
Abstract
543,935. Switch contacts; electromagnetic switches. ELECTRICAL RESEARCH PRODUCTS, Inc. June 9, 1941, No. 7264. Convention date, June 15, 1940. [Class 38 (v)] A contact 6 of an electric switch is covered with a film of mercury 8 or other conducting liquid obtained by capillary attraction from a pool of mercury 9 into which a portion of the contact dips. The contact must be of a material " wet " by mercury and may be of iron, platinum, nickel or copper. Fig. 1 shows the invention applied to the fixed contact 6 of an electromagnetic switch having pole pieces 13, 14 and an armature 2 carrying the movable contact 5. The armature consists of a thin concave strip with saw-cuts at the upper end to make it flexible there. Owing to repeated engagement of the contacts, a thin film of mercury becomes transferred to the movable contact 5 also. In a modification, Figs. 7, 11 (not shown), the movable contact has a portion dipping into the mercury and other portion which moves between two fixed contacts, thus forming a twoway switch. Fig. 16 shows another form of armature, adapted to pivot about the points 33, 34 and carrying a contact member, portions 37 and 39 of which alternately engage fixed confacts and portion 41 of which dips into the mercury pool. One of the fixed contacts may be a tube through which the container is evacuated.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US543935XA | 1940-06-15 | 1940-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB543935A true GB543935A (en) | 1942-03-19 |
Family
ID=21990758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7264/41A Expired GB543935A (en) | 1940-06-15 | 1941-06-09 | Improvements in or relating to electric switches and relays |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB543935A (en) |
-
1941
- 1941-06-09 GB GB7264/41A patent/GB543935A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB691207A (en) | Improvements in relays | |
| GB466257A (en) | Improvements in and relating to mercury and like conducting-liquid electric switches | |
| FR2340605A1 (en) | CONTACT COATING FOR ELECTRICAL CONTACTS FOR LOW CURRENTS | |
| GB973878A (en) | An electric fuse switch | |
| GB542342A (en) | Improvements in contacts for electric switches | |
| GB1523136A (en) | Pushbutton switch | |
| GB543935A (en) | Improvements in or relating to electric switches and relays | |
| GB543008A (en) | Improvements in or relating to electromagnetic relays with mercury contacts | |
| GB1326760A (en) | Mercury wetted switch contacts | |
| GB1506372A (en) | Electrical switch | |
| GB1090456A (en) | Miniature electric circuit-breakers | |
| ES448191A1 (en) | Mercury wettable contact assembly | |
| ES486131A1 (en) | Switch. | |
| GB553329A (en) | Improvements in electromagnetic relays | |
| GB1519388A (en) | Electric switch | |
| GB1049677A (en) | Electromagnetic switching assembly | |
| GB629300A (en) | Improvements in electrical snap acting switches | |
| US2259661A (en) | Electrical switch | |
| US2317695A (en) | Electric switch | |
| GB846042A (en) | Improvements in the mounting of fixed contacts and of the terminals of electromagnetic relays | |
| GB751967A (en) | Improved switch wiper | |
| GB428874A (en) | Improvements in electric switches specially applicable to switches for thermostats | |
| ES390705A1 (en) | Oil immersed snap action loadbreak switch | |
| GB1081383A (en) | Improvements in or relating to electrical switches | |
| FR2303366A1 (en) | Electric plug-in relay - has coil, together with two polar pieces and actuating plate inside coil to operate vehicle turn indicators |