Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent
1976-03-08
1977-07-12
Mayewsky, Volodymyr Y.
Electricity: circuit makers and breakers
Liquid contact
Time delay
200 67DB, 200 76, 200275, 200303, H01H 1364, H01H 312
Patent
active
040355969
ABSTRACT:
A switch construction comprises a housing which has a base wall and an upstanding side wall with first and second contact terminals arranged in spaced locations in the housing and with one of them bent over on its top so as to form a contact making portion. A spring member has an upper part with one end engaged in a V-shaped bearing on the one contact terminal and has a lower part with a contact arm which is engageable with the contact portion of the other terminal. The upper and lower parts of the spring member are interconnected by a curved bearing portion which is engaged and supported in the housing sidewall. In addition the spring member has an intermediate part of the upper portion which is substantially straight and which is engageable by an extension of an actuation member which is engaged on the housing and confined for movement upwardly and downwardly within predetermined limits. The spring member biases the actuating member to an uppermost end position and it is movable downwardly against the spring member to cause a pivotal motion of the spring member upper part about the bulging portion at one end of the intermediate part and a bulging portion at an opposite end of the intermediate part. The lower part of the spring which includes the contact member is first moved in an upward direction by the downward movement of the actuating member and is thereafter moved into engagement with the contact portion of the second contact terminal.
REFERENCES:
patent: 1499370 (1924-07-01), James
patent: 2507381 (1950-05-01), Morse
patent: 3073934 (1963-01-01), Oakman et al.
patent: 3786205 (1974-01-01), Lien
patent: 3916131 (1975-10-01), Golbeck et al.
patent: 3997745 (1976-12-01), Marquardt et al.
Futterknecht Kuno
Marquardt Erich
Storz Werner
J. & J. Marquardt
Mayewsky Volodymyr Y.
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