초록 ▼

An interlock/latch system for a machine cover, particularly for an electrophotographic printing machine. A cover latch is provided with a latching mechanism and a set of electrical contacts which are mechanically closed when the cover is closed and the latch engaged. A sensor such as a Hall-Effect s

An interlock/latch system for a machine cover, particularly for an electrophotographic printing machine. A cover latch is provided with a latching mechanism and a set of electrical contacts which are mechanically closed when the cover is closed and the latch engaged. A sensor such as a Hall-Effect sensor is mounted in close proximity to the latch. A magnet in the cover actuates the Hall-Effect sensor when the cover is closed and latched sending a signal to the machine controller. The machine controller prohibits operation of the machine until the signal is received.

대표청구항 ▼

[ I claim:] [1.] An interlock system for a printing machine with a cover having open and closed positions comprising:a latch mechanism, said latch mechanism having an open and a closed position;an electrical contact cooperating with said latch mechanism so that said contact is closed when said latch

[ I claim:] [1.] An interlock system for a printing machine with a cover having open and closed positions comprising:a latch mechanism, said latch mechanism having an open and a closed position;an electrical contact cooperating with said latch mechanism so that said contact is closed when said latch mechanism is closed;an interlock device adjacent said latch mechanism, said interlock device generating a signal when said latch mechanism is closed;a machine controller to receive said signal from said interlock device, said machine controller prohibiting operation of the machine until the signal is received, which signal must be received contemporaneously with the closing of said electrical contact to enable machine operation.