Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Patent
1978-12-22
1980-10-28
Broome, Harold
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
335126, H01H 5108
Patent
active
042310075
ABSTRACT:
A high voltage switch for use in a microwave oven is disclosed which switches a high voltage by an external electric signal. The high voltage switch includes a slider guide chamber of insulative material between a contact making and breaking chamber for switching the high voltage and an electromagnet device to which a low voltage is applied and which serves as a power source for making and breaking the contact, so that the high voltage section is isolated from the low voltage section. An insulative slider extends through the slider guide chamber, and an armature which is directly driven by the electromagnet device and a conducting movable member having a movable contact mounted in the contact making and breaking chamber are linked by the insulative slider. The armature and the conducting movable member are pivotably mounted at their ends so that the drive operation by the electromagnet device is amplified to break the contact. As a result, a small electromagnet device of the A.C. drive type by used resulting in the remarkable improvement of insulation ability, durability and reliability and a simple and compact structure.
REFERENCES:
patent: 2514913 (1950-07-01), Tyrner
patent: 2523774 (1950-09-01), Moran
patent: 3014103 (1961-12-01), Moran et al.
patent: 3699486 (1972-10-01), De Lucia
Tanaka Junzo
Urashima Chikao
Broome Harold
Matsushita Electric - Industrial Co., Ltd.
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