Current connection and/or cut-off device comprising permanent contacts with reduced wear
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 22, 2019
Grant Date -
Nov 26, 2015
app pub date -
Oct 17, 2013
filing date -
Oct 19, 2012
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Device for making and/or breaking a current including a pair of permanent contacts (3, 4), at least one of the contacts (3, 4) being movable. At least one permanent contact (3, 4) including a main portion (3.1, 4.1) having a free end and an end protection portion (3.2, 4.2) secured to the free end of the main portion (3.1, 4.1), designed to be in mechanical and electrical contact with the other permanent contact (4, 3) only during an operation for opening or closing the pair. The end protection portion (3.2, 4.2) is made of a single transition metal having a melting temperature that is strictly higher than that of the main portion (3.1, 4.1) to which it is secured, or of an oxide or carbide of such a metal, or even of zinc oxide. For application in particular to high- or medium-voltage circuit breakers.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2013 Application Filing Year
- H01H Class
- 1269 Applications Filed
- 1195 Patents Issued To-Date
- 94.17 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 1 Citation Count
- H01H Class
- 33.81 % this patent is cited more than
- 6 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Jul 22, 2026 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jul 22, 2030 |
