Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – With longitudinally expansible solid element
Patent
1990-06-06
1991-06-11
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
With longitudinally expansible solid element
337132, H01H 6100, H01H 7118
Patent
active
050235877
ABSTRACT:
An arm preferably for electric switches, the arm being controlled by electricity, and having a first fixed end the other end of which is movable perpendicular to the length direction of the arm. The arm comprises two parallel portions (47) separated by an air gap (17) or some other heat insulating material, and which are secured to each other at each end. At least one of the portions, being heated by electricity and, through longitudinal differential expansion with respect to the other portion, achieves said movement. The portions are so shaped that, adjacent the fixed end (at 45) with respect to the rest of the portions, they have a reduced bending resistance about an axis which is perpendicular to the length direction of the arm and with respect to said direction of movement.
REFERENCES:
patent: 2789180 (1957-04-01), Cox
patent: 3123695 (1964-03-01), Strubberg
patent: 3968469 (1976-07-01), Budlane
Bergquist Per-Marcus
Troberg Henrik E.
Broome Harold
Electrolux Research & Innovation Aktiebolag
LandOfFree
Arm for electric switches and the like controlled by electricity does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arm for electric switches and the like controlled by electricity, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arm for electric switches and the like controlled by electricity will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-785386