SE8303662L - ELECTRICAL SWITCHING DEVICE - Google Patents
ELECTRICAL SWITCHING DEVICEInfo
- Publication number
- SE8303662L SE8303662L SE8303662A SE8303662A SE8303662L SE 8303662 L SE8303662 L SE 8303662L SE 8303662 A SE8303662 A SE 8303662A SE 8303662 A SE8303662 A SE 8303662A SE 8303662 L SE8303662 L SE 8303662L
- Authority
- SE
- Sweden
- Prior art keywords
- roller
- shaft
- spring
- rotation
- movement
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/16—Contacts characterised by the manner in which co-operating contacts engage by abutting by rolling; by wrapping; Roller or ball contacts
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Mechanisms For Operating Contacts (AREA)
- Measuring Leads Or Probes (AREA)
Abstract
An electrical switching contact (Figure 3), especially for an arcing contact of a tap changer switch, comprises a roller 31 rotatably mounted on a shaft 32. The shaft also has reaction means 36 between which and the roller a helical spring 35 extends coaxially with the shaft to bias the roller into electrical contact with a shoulder 34. The spring is a light frictional fit on the shaft and keyed at one end to the roller for rotation therewith. Attempted rotation of the roller in one direction winds the spring onto the shaft by increasing frictional pressure thereby preventing further rotation, while rotation in the opposite direction takes place freely. Alternatively, a spring 57 may be a light frictional fit both on a roller 51 and a sleeve 55, fitted on a shaft 52, and will also wind tight in one direction of roller movement to prevent further such movement (Figure 5). The spring 35 or 57 provides a simple method of providing both axial bias and ratchet effects. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08218894A GB2125624B (en) | 1982-06-30 | 1982-06-30 | Electrical switching apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| SE8303662D0 SE8303662D0 (en) | 1983-06-27 |
| SE8303662L true SE8303662L (en) | 1983-12-31 |
| SE451648B SE451648B (en) | 1987-10-19 |
Family
ID=10531385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE8303662A SE451648B (en) | 1982-06-30 | 1983-06-27 | ELECTRICAL SWITCH DEVICE AND TRANSFORMER CONNECTOR SWITCH INCLUDING THE ELECTRICAL SWITCH DEVICE |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE3322107A1 (en) |
| GB (1) | GB2125624B (en) |
| SE (1) | SE451648B (en) |
-
1982
- 1982-06-30 GB GB08218894A patent/GB2125624B/en not_active Expired
-
1983
- 1983-06-20 DE DE19833322107 patent/DE3322107A1/en not_active Withdrawn
- 1983-06-27 SE SE8303662A patent/SE451648B/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| SE8303662D0 (en) | 1983-06-27 |
| GB2125624A (en) | 1984-03-07 |
| SE451648B (en) | 1987-10-19 |
| GB2125624B (en) | 1986-04-16 |
| DE3322107A1 (en) | 1984-01-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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