Switch
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 7, 2003
Grant Date -
May 2, 2002
app pub date -
Oct 4, 2001
filing date -
Oct 5, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A switch having a long contact life is provided. A neutral contact blade is provided with a first neutral contact and a second neutral contact. A primary movable contact blade and a secondary movable contact blade are supported by these first and second neutral contacts, respectively, for seesaw motion. The operation of a lever causes the primary movable contact blade and the secondary movable contact blade through a pushrod to move in a seesaw motion in such a manner that a secondary movable contact provided on one end of the secondary movable contact blade contacts with an associated secondary fixed contact before a primary movable contact provided on one end of the primary movable contact blade contacts with an associated primary fixed contact, whereas after the primary movable contact of the primary movable contact blade is separated from the primary fixed contact, the secondary movable contact of the secondary movable contact blade is separated from the secondary fixed contact. This construction causes flow of a large closing current and any arc discharge to occur mainly on the side of the secondary movable contact blade.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully