Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – With bimetallic elements
Patent
1991-01-25
1992-02-18
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
With bimetallic elements
337 74, 337 79, H01H 7116
Patent
active
050897993
ABSTRACT:
An electric rocker switch has a thermally responsive movable contact element that is mechanically closed against the fixed contact, but moves by bimetallic thermal action to open when an overcurrent condition exists. A trip flag also moves between the open contacts whenever the switch rocker is moved to OFF, and will remain in this position even if the rocker is held ON, if the bimetallic element has caused the flag to move between the contacts. Trip-free operation is thereby achieved. A spring acts on the trip flag to provide a positive snap action as the flag moves between the contacts. The same spring holds the rocker ON, and serves to hold the flag lightly against the movable contact in the switch ON condition.
REFERENCES:
patent: 1708222 (1929-04-01), Getchell
patent: 3311725 (1967-03-01), Butler et al.
patent: 4833439 (1989-05-01), Bowden et al.
patent: 5004994 (1991-04-01), Korczynski et al.
LandOfFree
Thermal switch/breaker does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Thermal switch/breaker, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal switch/breaker will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1826295