Automatic weight-responsive container fillers

Claim 1

AUTOMATIC CONTAINER FILLER CONSTRUCTION FOR DENTAL UNITS AND THE LIKE OF THE TYPE IN WHICH A CONTAINER PLATFORM UPON WHICH A CONTAINER MAY BE POSITIONED IS MOUNTED ON A FRAME MOVABLE BETWEEN AN UPPER FIRST POSITION AND AN INTERMEDIATE SECOND POSITION AND A LOWER THIRD POSITION, IN WHICH THE CONTAINER PLATFORM IS MOUNTED NORMALLY BIASED TO THE UPPER FIRST POSITION IN THE ABSENCE OF A CONTAINER THEREON, IN WHICH THE CONTAINER PLATFORM WILL MOVE TO INTERMEDIATE SECOND POSITION AS A RESULT OF THE CONTAINER BEING POSITIONED THEREON, IN WHICH THE CONTAINER PLATFORM WILL MOVE TO LOWER THIRD POSITION AS A RESULT OF THE CONTAINER BEING FILLED WITH WATER TO A GENERALLY PREDETERMINED LEVEL, IN WHICH A WATER LINE IS PROVIDED WITH A WATER VALVE OPERABLY CONNECTED THEREIN WITH THE VALVE BEING NORMALLY BIASED TO CLOSED POSITION AND ELECTRICALLY ACTUATED TO OPEN POSITION, AND IN WHICH THE WATER LINE IS MOUNTED POSITIONED FOR DIRECTING WATER INTO THE CONTAINER WHEN THE CONTAINER IS POSITIONED ON THE CONTAINER PLATFORM AND THE WATER VALVE IS ELECTRICALLY ACTUATED TO OPEN POSITION; THE IMPROVEMENTS INCLUDING AN ELECTRICAL CIRCUIT OPERABLY CONNECTED THROUGH THE WATER VALVE FOR ELECTRICALLY ACTUATING THE VALVE TO OPEN POSITION UPON THE ELECTRICAL CIRCUIT BEING CLOSED AND PERMITTING THE VALVE TO BE BIASED TO CLOSED POSITION UPON THE ELECTRICAL CIRCUIT BEING OPENED, A SNAP-ACTION 3-POSITION "ONOFF" SWITCH OPERABLY CONNECTED IN THE ELECTRICAL CIRCUIT, SAID SWITCH COMPRISING A STATIONARY UPPER CONTACT, A STATIONARY LOWER CONTACT SPACED THEREFROM, AN ELECTRICALLY CONDUCTING UPPER SPRING BLADE HAVING A CONTACT AT ONE END FOR CONTACT WITH THE STATIONARY UPPER CONTACT, AN ELECTRICALLY CONDUCTING LOWER SPRING BLADE HAVING A CONTACT AT ONE END FOR CONTACT WITH THE STATIONARY LOWER CONTACT, THE OPPOSITE ENDS OF THE SPRING BLADES BEING POSITIONED PERMANENTLY IN ELECTRICAL CONTACT WITH EACH OTHER SPACED FROM THE STATIONARY UPPER AND LOWER CONTACTS, A PIVOTED PLATFORM SUPPORTING ARM HAVING ONE END FIXED TO SAID