Electrical control safety system comprising photocells or...

Details Electrical control safety system comprising photocells or... Electrical control safety system comprising photocells or...

2007-11-06

2007-11-06

Leykin, Rita (Department: 2837)

Electricity: motive power systems

Automatic and/or with time-delay means

Movement, position, or limit-of-travel

C318S286000, C318S369000

Reexamination Certificate

active

11486133

ABSTRACT:
An electrical control safety system is provided comprising two photocells or equivalent sensors applied on a sliding gate, the two photocell systems being composed respectively of at least two transmitters and two receivers, and the control safety system being cyclically able to make the first photocell system operate during a first operating time interval while the second photocell system is disabled, and being cyclically able to make the second photocell system operate, during a second operating time interval, subsequent to the first time interval, while the first photocell system is disabled.

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