Electricity: electrothermally or thermally actuated switches – Electrothermally actuated switches – With bimetallic elements
Patent
1984-09-07
1986-02-11
Broome, Harold
Electricity: electrothermally or thermally actuated switches
Electrothermally actuated switches
With bimetallic elements
335 45, 337 82, H01H 6100, H01H 7508
Patent
active
045701440
ABSTRACT:
A heater strip (12) is disposed in spaced relation to a temperature responsive actuator element (20) for indirectly heating that element in response to current flow in the heater (12). An adjustable heat sink (22) is disposed in spaced proximity to the actuator element (20) for removing heat from the actuator element by radiation therefrom through air to the heat sink in a first position and adjustable to be in thermally conductive engagement with the actuator in a second position for increasing the efficiency of heat transfer from the actuator to the heat sink. Increased current flow in the protected branch circuit is required to cause the actuator (20) to attain its predetermined actuation temperature as the heat sink is adjusted to increase the efficiency of heat transfer between the actuator (20) and the heat sink.
REFERENCES:
patent: 2839633 (1958-06-01), Moyer
patent: 2910561 (1959-10-01), Frey et al.
Bridges Robert B.
Brubaker John R.
Hastings Jerome K.
Kroll John W.
Broome Harold
Eaton Corporation
Grace C. H.
Vande Zande L. G.
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