Electricity: electrical systems and devices – Electrostatic capacitors – Fixed capacitor
Patent
1986-01-23
1987-08-18
Tolin, G. P.
Electricity: electrical systems and devices
Electrostatic capacitors
Fixed capacitor
200 50AA, H02B 114
Patent
active
046881441
ABSTRACT:
A shutter mechanism is provided for a motor control center of the type having a backwall with a stab opening for receiving a stab connector for making electrical contact with bus bars which are behind the panel. The shutter consists of two pieces, a stationary member which has a central opening and a vertical slit opening into the central opening and a movable member which has a guide thereon and is positioned between the motor control center and the stationary member with the guide extending through the slit and vertically movable therein. The stationary member is fastened to the motor control center with the central opening overlaying the stab opening. The movable member moves from a closed position to an open position and then from the open position to the closed position under the force of gravity alone without the use of springs.
REFERENCES:
patent: 4146915 (1979-03-01), Yosida
patent: 4183073 (1980-01-01), Clausing
patent: 4285026 (1981-08-01), Clausing
patent: 4417108 (1983-11-01), Vaill et al.
patent: 4468531 (1984-08-01), Postlewait
patent: 4486815 (1984-12-01), Takahashi
Farag Samir F.
Kleinecke John D.
Little Thomas R.
James John L.
Siemens-Allis, Inc.
Tolin G. P.
Ulbrich Volker R.
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