Electricity: circuit makers and breakers – Interlocking – Between plural switches
Patent
1988-08-29
1989-12-05
Scott, J. R.
Electricity: circuit makers and breakers
Interlocking
Between plural switches
200 4316, 200 50R, H01H 320
Patent
active
048854360
ABSTRACT:
A removable power supply interlock and extraction mechanism (2) includes a switch guard (16), mounted to the front panel (14) of a module (4), movable between a safe position when the power switch (12) is off to keep it off, and a working position, at which the switch can be freely turned on and off. When the module is being inserted into an electrical unit (16), an actuator (34), mounted to the front panel, is rotated in its insertion rotary direction (50) so the switch guard moves from its safe to its working position; simultaneously a latching element (62) on the actuator engages a latching surface (60) on the unit so to drive the module into the unit until the connectors on the module and unit are fully connected. To remove the module, the power switch is first turned off. The actuator is then rotated in its retraction rotary direction (52) causing the switch guard to move into its safe position to keep the switch off; simultaneously the latching element engages the latching surface to drive the module away from the unit thus disconnecting the electrical connectors.
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Max Robert C.
Pham Hoa
Scott J. R.
Tandem Computers Incorporated
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