Self-holding resonant reed relay

Claim 1

A SELF HOLDING RESONANT REED RELAY COMPRISING A FRAME, AN ELECTROMAGNET INCLUDING A COIL HAVING INPUT LEADS FOR ACCEPTING A MODULATED INPUT SIGNAL, A POLE-PIECE FOR SAID ELECTROMAGNET, SAID ELECTROMAGNET MOUNTED AT ONE END OF SAID FRAME, A MULTIPLICITY OF TUNED REEDS, EACH REED BEING RESONANT AT AN INDIVIDUALLY DETERMINED FREQUENCY, SAID REEDS FIXED IN A STACK AT A FRAME END OPPOSITE SAID ELECTROMAGNET AND HAVING THE FREE ENDS THEREOF EXTENDED HORIZONTALLY TO A POINT ABOVE SAID ELECTROMAGNET, CONTACTS PLACED ON SAID REEDS, FIXED CONTACT HOLDING MEANS PLACED ADJACENT SAID REEDS AND PARALLEL THERETO CONNECTED TO SAID STACK IN SAID FRAME, SAID CONTACT HOLDING MEANS PLACED BENEATH SAID REEDS AND ADAPTED TO MATE WITH SAID REED CONTACTS, PERMANENT MAGNET MEANS INCLUDING SINUATED METAL ARMS PLACED ABOVE SAID REEDS ATTRACTING SAID REEDS AWAY FROM SAID FIXED CONTACTS TO MAINTAIN THE CONTACTS NORMALY OPEN, BIAS MEANS CONNECTED TO SAID COIL FOR CREATING A RESIDUAL BIAS THEREIN, MEANS ADAPTED TO CONVERT SAID MODULATED INPUT SIGNAL INTO A PULSATING DIRECT CURRENT INPUT TO SAID COIL, SAID RESIDUAL BIAS AND SAID LATTER CURRENT BEING SUFFICIENT TO INDUCE A MAGNETIC FORCE IN THE ELECTROMAGNET TO ATTRACT A REED RESONANT AT SAID INCOMING SIGNAL FREQUENCY TO SAID POLE-PIECE AND TO OVERCOME THE HOLDING FORCE OF SAID PERMANENT MAGNET ON SAID REED THEREBY ALLOWING THE REED CONTACTS AND THE FIXED CONTACTS TO MEET TO CLOSE A CONNECTED ELECTRIC CIRCUIT WHILE SAID MODULATED INPUT SIGNAL IS PRESENT AT SAID COIL.