Electricity: magnetically operated switches – magnets – and electr – Permanent magnet-actuated switches – Thermomagnetic
Patent
1982-03-10
1984-02-28
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Permanent magnet-actuated switches
Thermomagnetic
335146, H01H 61013
Patent
active
044344112
ABSTRACT:
A temperature-sensitive switch is provided with a resilient movable cantilever composed of amorphous ferromagnetic material having a Curie point. The cantilever is adapted to carry a first contact member. A second contact member is disposed adjacent the first contact member for at least intermittently establishing electrical contact with the first contact member. A magnet is associated with and adapted to bias the cantilever to a first position that establishes electrical continuity between the first and second contact members. The cantilever is transformed from a ferromagnetic phase to a paramagnetic phase when its temperature exceeds the Curie point, whereby the cantilever assumes a second position in which the electrical conductivity is interrupted. The switch is lightweight, compact, economical to manufacture and reliable in operation.
REFERENCES:
patent: 1561386 (1925-11-01), White
patent: 1705716 (1929-03-01), Claytor
patent: 1939076 (1933-12-01), McShane
patent: 2182864 (1939-12-01), Frank
patent: 2184372 (1939-12-01), Von Hoorn
patent: 2205944 (1940-06-01), Dunmire
patent: 2718569 (1955-09-01), Johnston
patent: 2781433 (1957-02-01), Wilckens
patent: 2926227 (1960-02-01), Sundt
patent: 2951927 (1960-09-01), Weller
patent: 3188448 (1965-06-01), Weller
patent: 3206573 (1965-09-01), Anderson et al.
patent: 3226507 (1965-12-01), Kasahara
patent: 3287541 (1966-11-01), Weller
patent: 3290630 (1966-12-01), Dyksterhouse et al.
patent: 3390360 (1968-06-01), Umeda
patent: 3453566 (1969-07-01), Kasahara
patent: 3469217 (1969-09-01), Linton
patent: 3701063 (1972-10-01), Clausse
patent: 3743982 (1973-07-01), Kasahara
patent: 4263573 (1981-04-01), Melton et al.
patent: 4266211 (1981-05-01), Ulanet
Anderson, III Philip M.
Gordon Scott E.
Kearney James E.
Allied Corporation
Broome Harold
Buff Ernest D.
Fuchs Gerhard H,.
LandOfFree
Temperature-sensitive switch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Temperature-sensitive switch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature-sensitive switch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-761101