Device to transform a displacement or a force into a signal in electrical current

Claim 1

A DEVICE FOR TRANSFORMING FORCES INTO ELECTRIC CURRENT SIGNALS, SAID DEVICE COMPRISING A PIVOTALLY MOUNTED BALANCE ARM, MEANS FOR CONNECTING SAID BALANCE ARM TO A SOURCE OF FORCE TO BE MEASAURED, AN ELECTRICALLY POWERED RESTORING FORCE PRODUCING SYSTEM ARRANGED TO EXERT COUNTERFORCES UPON SAID BALANCE ARM, A PAIR OF ELECTRICAL CONTACT ELEMENTS, THE CONTACT RESISTANCE BETWEEN SAID ELEMENTS BEING VARIABLE WITH THE CONTACT PRESSURE TO WHICH THEY ARE SUBJECTED, ONE OF SAID CONTACT ELEMENTS BEING MOUNTED ON SAID BALANCE ARM, AND THE OTHER CONTACT ELEMENT BEING FIXED AT A POSITION CONTACTING SAID CONTACT ELEMENT, A TRANSISTOR HAVING A COLLECTOR, AN EMITTER AND A BASE, A PAIR OF TERMINALS, MEANS CONNECTING SAID ELECTRICALLY POWERED RESTORING SYSTEM AND THE COLLECTOR AND EMITTER OF SAID TRANSISTOR IN SERIES BETWEEN SAID TERMINALS, A HIGH RESISTANCE CIRCUIT, INCLUDING SAID CONTACT ELEMENTS, CONNECTED BETWEEN THE BASE AND COLLECTOR OF SAID TRANSISTOR AND A CAPACITOR CONNECTING THE EMITTER OF SAID TRANSISTOR AND A POINT IN SAID HIGH RESISTANCE CIRCUIT BETWEEN SAID CONTACT ELEMENTS AND SAID TRANSISTOR BASE, SAID TERMINALS SERVING AS INPUT TERMINALS TO RECEIVE ENERGIZING POWER FROM AN EXTERNAL POWER SUPPLY SOURCE, AND ALSO, WHEN SO CONNECTED, AS OUTPUT TERMINALS FOR DELIVERING ELECTRIC CURRENT SIGNALS PROPORTIONED TO THE FORCE BEING MEASURED TO A UTILIZATION DEVICE, THE BASE CURRENT OF SAID TRANSISTOR VARYING WITH SAID CONTACT RESISTANCE, THE COLLECTOR CURRENT OF SAID TRANSISTOR VARYING IN ACCORDANCE WITH SAID BASE CURRENT AND SAID RESTORING SYSTEM BEING POWERED BY SAID COLLECTOR CURRENT WHEREBY ALL CURRENT PASSING INTO AND OUT OF SAID SYSTEM PASSES THROUGH SAID TERMINALS AND THROUGH SAID ELECTROMAGNETIC RESTORING FORCE PRODUCING SYSTEM.

Claim 2

A DEVICE FOR TRANSFORMING FORCES INTO ELECTRIC CURRENT SIGNALS, SAID DEVICE COMPRISING A PIVOTALLY MOUNTED BALANCE ARM, MEANS FOR CONNECTING SAID BALANCE ARM TO A SOURCE OF FORCE TO BE MEASAURED, AN ELECTRICALLY POWERED RESTORING FORCE PRODUCING SYSTEM ARRANGED TO EXERT COUNTERFORCES UPON SAID BALANCE ARM, A PAIR OF ELECTRICAL CONTACT ELEMENTS, THE CONTACT RESISTANCE BETWEEN SAID ELEMENTS BEING VARIABLE WITH THE CONTACT PRESSURE TO WHICH THEY ARE SUBJECTED, ONE OF SAID CONTACT ELEMENTS BEING MOUNTED ON SAID BALANCE ARM, AND THE OTHER CONTACT ELEMENT BEING FIXED AT A POSITION CONTACTING SAID CONTACT ELEMENT, A TRANSISTOR HAVING A COLLECTOR, AN EMITTER AND A BASE, A PAIR OF TERMINALS, MEANS CONNECTING SAID ELECTRICALLY POWERED RESTORING SYSTEM AND THE COLLECTOR AND EMITTER OF SAID TRANSISTOR IN SERIES BETWEEN SAID TERMINALS, A HIGH RESISTANCE CIRCUIT, INCLUDING SAID CONTACT ELEMENTS, CONNECTED BETWEEN THE BASE AND COLLECTOR OF SAID TRANSISTOR AND A CAPACITOR CONNECTING THE EMITTER OF SAID TRANSISTOR AND A POINT IN SAID HIGH RESISTANCE CIRCUIT BETWEEN SAID CONTACT ELEMENTS AND SAID TRANSISTOR BASE, SAID TERMINALS SERVING AS INPUT TERMINALS TO RECEIVE ENERGIZING POWER FROM AN EXTERNAL POWER SUPPLY SOURCE, AND ALSO, WHEN SO CONNECTED, AS OUTPUT TERMINALS FOR DELIVERING ELECTRIC CURRENT SIGNALS PROPORTIONED TO THE FORCE BEING MEASURED TO A UTILIZATION DEVICE, THE BASE CURRENT OF SAID TRANSISTOR VARYING WITH SAID CONTACT RESISTANCE, THE COLLECTOR CURRENT OF SAID TRANSISTOR VARYING IN ACCORDANCE WITH SAID BASE CURRENT AND SAID RESTORING SYSTEM BEING POWERED BY SAID COLLECTOR CURRENT WHEREBY ALL CURRENT PASSING INTO AND OUT OF SAID SYSTEM PASSES THROUGH SAID TERMINALS AND THROUGH SAID ELECTROMAGNETIC RESTORING FORCE PRODUCING SYSTEM.