Safety device for an industrial boiler comprising relays...

Details Safety device for an industrial boiler comprising relays... Safety device for an industrial boiler comprising relays...

2008-06-10

2008-06-10

Sherry, Michael J (Department: 2836)

Electrical transmission or interconnection systems

Personnel safety or limit control features

Reexamination Certificate

active

07385316

ABSTRACT:
A safety device for an industrial boiler (CHA) including relays (REn) which are connected to form an electromechanical safety chain (CH1). Each relay (REn) is mounted on a printed circuit board (CIA, CIB, CIC, CIP). As a result of the arrangement, the relays can be mounted in a compact box that may be sealed so that it is impossible for an operator to access a relay in order to block it.

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