Sequential transmission of randomly occurring events

Claim 1

APPARATUS FOR TRANSMITTING SIGNALS INDICATIVE OF THE CONDITIONS OF EACH OF A GROUP OF INDEPENDENTLY OPERABLE BISTABLE CIRCUIT CONTROL DEVICES HAVING OFF- AND ON-CONDITIONS, WHICH COMPRISES: (A) A MULTI-POSITION SCANNER FOR TESTING IN SUCCESSION THE CONDITIONS OF SAID DEVICES; (B) MEANS FOR ACTUATING SAID SCANNER TO TEST SAID DEVICES IN SUCCESSION WHENEVER ANY OF SAID DEVICES ASSUMES SAID ON-CONDITION; (C) A MEMORY UNIT HAVING A NORMAL OFF-POSITION, AN ONPOSITION AND A THIRD POSITION, MEANS FOR CHANGING THE MEMORY UNIT TO THE ON-POSITION ONLY FROM SAID OFFPOSITION WHEN THE ASSOCIATED BISTABLE DEVICE ASSUMES THE ON-CONDITION THEREOF; (D) MEANS FOR CHANGING THE MEMORY UNIT TO THE THIRD POSITION ONLY FROM THE ON-POSITION UPON THE COMPLETION OF TRANSMISSION OF A SIGNAL CORRESPONDING TO THE ON-CONDITION OF SAID ASSOCIATED BISTABLE DEVICE; AND (E) MEANS FOR CHANGING THE MEMORY UNIT TO THE OFFPOSITION ONLY FROM SAID THIRD POSITION WHEN SAID ASSOCIATED BISTABLE DEVICE IS IN SAID OFF-CONDITION; (F) SAID SCANNER BEING SEQUENTIALLY RESPONSIVE TO THE POSITIONS OF SAID MEMORY UNITS TO SENSE ON-CONDITION FOR EACH BISTABLE DEVICE WHEN AND ONLY WHEN THE ASSOCIATED MEMORY UNIT IS IN SAID ON-POSITION.