Electricity: circuit makers and breakers – Multiple circuit control – Pivoted contact
Patent
1987-12-07
1989-03-28
Pellinen, A. D.
Electricity: circuit makers and breakers
Multiple circuit control
Pivoted contact
200 11TW, 200569, H01H 1914
Patent
active
048166235
ABSTRACT:
An improved rotary line switch provided with an upper cover, a lower cover with trapezoid blocks and mushroom blocks on the internal walls thereof, a contact strip held by the mushroom block at one end of the lower cover, an inverted U shaped catch-contact strip having a catch end and a contact end held by the mushroom block at the other end of the lower cover, a control consisting of a knob and a lower ratchet wheel and an upper ratchet wheel each having four teeth, and a screw having a journal for the control to fit on and used to fasten the upper and lower cover together. The switch is constructed in such way that the S shaped end of a contact strip engages with a tooth of the lower ratchet wheel while the catch end of the catch-contact strip engages with a tooth of the upper ratchet wheel and serves as a catch of the same, and that when the knob is turned 90 degrees the lower ratchet wheel will push the S shaped end of the contact strip to contact with the contact end of the catch-contact strip once.
REFERENCES:
patent: 4166236 (1979-08-01), Andrews
Ginsburg Morris
Pellinen A. D.
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