Pneumatic timing attachment for an electromagnetic device

Details Pneumatic timing attachment for an electromagnetic device Pneumatic timing attachment for an electromagnetic device

1983-09-02

1985-08-13

Goldberg, E. A.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Retarded or delayed type

335 59, 116307, H01H 703

Patent

active

045353107

ABSTRACT:
A timing attachment for a relay that is programmable to provide an ON Delay or an OFF Delay operation of a pair of switches having either normally open or normally closed contacts. The attachment includes a housing that is mountable in either of two positions on an assembly that is attached to the relay to program the OFF and ON Delay timing functions and indicia on the switches that indicate the contact operation of the switches when the switches are inserted in sockets in the attachment. A cover for the attachments has openings there through that expose indicia on the switches indicating the normally open and normally closed operating condition of the switches when the switches are inserted into the sockets and a slider that is movable along a rear surface of the cover to positions indicating the programmed operation of the attachment and the mode of operation of the switches when the attachment is mounted on the relay.

REFERENCES:
patent: 3249716 (1966-05-01), Haydu et al.
patent: 3509501 (1970-04-01), Brovedan

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