Device for regulating contact pressure between driving and driven elements of transmission

Claim 1

A PRESSURE GENERATING APPARATUS, COMPRISING A FLUID PRESSURE GENERATING MACHINE HAVING FLUID-ADMITTING INTAKE MEANS, OUTLET MEANS THROUGH WHICH COMPRESSED FLUID IS DISCHARGED THEREFROM, AND FLUID COMPRESSING MEANS INCLUDING A ROTARY SHAFT FOR DRAWING FLUID THROUGH SAID INTAKE MEANS AND FOR EXPELLING PRESSURE FLUID THROUGH SAID OUTLET MEANS IN RESPONSE TO ROTATION OF SAID SHAFT, SAID MACHINE BEING ARRANGED TO OPERATE AT DIFFERENT LOADS AND TO EXPEL FLUID AT PRESSURE WHICH CHANGE IN RESPONSE TO CHANGES IN LOAD UPON SAID MACHINE; A PRIME MOVER INCLUDING A MOTOR HAVING A ROTARY OUTPUT SHAFT; A TRANSMISION FOR TRANSMITTING ROTATION OF SAID OUTPUT SHAFT OF SAID FIRST MENTIONED SHAFT, SAID TRANSMISSION COMPRISING A DRIVEN ELEMENT OPERATIVELY CONNECTED WITH SAID FIRST MENTIONED SHAFT WHEREBY IT OFFERS VARYING RESISTANCE TO TRANSFER OF MOTION THERETO WHEN THE PRESSURE OF FLUID WHICH IS BEING EVACUATED THROUGH SAID OUTLET MEANS VARIES, AND A DRIVING ELEMENT OPERATIVELY CONNECTED WITH SAID OUTPUT SHAFT AND IN MOTION TRANSMITTING ENGAGEMENT WITH SAID DRIVEN ELEMENT; A SUPPORT FOR SAID DRIVING ELEMENT AND FOR SAID MOTOR, SAID SUPPORT BEING MOVABLE WITH RESPECT TO SAID DRIVEN ELEMENT IN DIRECTIONS TO CHANGE THE CONTACT PRESSURE BETWEEN SAID ELEMENTS; A FIXED SUPPORT; A REGULATING DEVICE OPERATING BETWEEN SAID SUPPORTS AND CONNECTED WITH SAID OUTLET MEANS FOR MOVING SAID FIRST MENTIONED SUPPORT IN A DIRECTION TO INCREASE THE CONTACT PRESSURE BETWEEN SAID ELEMENTS IN RESPONSE TO INCREASING PRESSURE OF FLUID WHICH IS EVACUATED THROUGH SAID OUTLET MEANS; AND RESILIENT PRESSING MEANS OPERATIVELY CONNECTED TO SAID FIRST MENTIONED SUPPORT FOR BIASING SAID FIRST MENTIONED SUPPORT IN SAID DIRECTION TO INCREASE THE CONTACT PRESSURE BETWEEN SAID ELEMENTS, SAID RESILIENT PRESSING MEANS PROVIDING A DECREASING BIAS AS SAID REGULATING DEVICE MOVES SAID FIRST MENTIONED SUPPORT TO INCREASE THE CONTACT PRESSURE, SO THAT SAID CONTACT PRESSURE HAS A MINIMUM VALUE WHEN SAID LOAD IS AT A MINIMUM.