Vibrator

Claim 1

A VIBRATOR COMPRISING: A CASE HAVING AN INTERNAL CAVITY WITH A CENTRAL AXIS AND SUPPLY AND EXHAUST PORTS; A CYLINDRICAL COMPARTRMENT-FORMING SURFACE PARTIALLY BOUNDING SAID CAVITY HAVING A FIRST DIAMETER CENTERED ON SAID CENTRAL AXIS; A FREE ROTOR IN SAID CAVITY ADAPTED TO ROLL AROUND INSIDE THE CASE IN BEARING CONTACT THEREWITH IN ORDER TO EXERT UNBALANCED CENTRIFUGAL FORCES ON SAID CASE, THE ROTOR HAVING A CENTRAL AXIS; AN EXTERNAL CYLINDRICAL COMPARTMENT-FORMING SURFACE ON SAID ROTOR HAVING A SECOND DIAMETER WHICH IS SMALLER THAN SAID FIRST DIAMETER AND CENTERED ON THE CENTRAL AXIS OF THE ROTOR, SAID ROTOR HAVING A PLURALITY OF VANE RECESSES OPENING INTO THE ROTOR FROM ITS COMPARTMENT-FORMING SURFACE, AND ALSO OPENING INTO THE ROTOR FROM A BOUNDARY SURFACE WHICH IS A SURFACE OF REVOLUTION THAT LIES OBLIQUELY TO THE AXIS, THE AXES OF THE ROTOR AND THE CAVITY BEING PARALLEL; A VANE SLIDABLY DISPOSED IN EACH OF SAID VANE RECESSES AND ADAPTED TO EXTEND BEYOND THE COMPARTMENT-FORMING SURFACE TO MAKE CONTACT WITH THE COMPARTMENT-FORMING SURFACE OF THE CAVITY AND TO BE RETRACTED INTO THE RESPECTIVE RECESS BY FORCE EXERTED ON IT BY THE COMPARTMENT-FORMING SURFACE OF THE CAVITY, RESPECTIVE COMPARTMENTS BEING FORMED BETWEEN ADJACENT VANES AND THE COMPARTMENT-FORMING SURFACES; A VANE CHAMBER BEING FORMED INSIDE EACH RECESS WHICH IS BOUNDED BY THE VANE AND THE WALLS OF THE RECESS, AND WHICH OPENS ON THE BOUNDARY SURFACE; AND AN ECCENTRIC ELEMENT COMPRISING A BODY HAVING A PAIR OF OFFSET BUT PARALLEL BEARINGS, THE FIRST BEING ROTATABLY MOUNTED TO THE CASE ON ITS CENTRAL AXIS, AND THE SECOND BEING ROTATABLY MOUNTED TO THE ROTOR ON ITS CENTRAL AXIS, WHEREBY THE ECCENTRIC ELEMENT ROTATES AROUND THE CASE AXIS WHEN THE ROTOR ORBITS IN THE CASE; AND PORTS AND PASSAGES SO DISPOSED AND ARRANGED IN THE ECCENTRIC ELEMENT AS SEQUENTIALLY AND PERIODICALLY TO SUPPLY FLUID UNDER PRESSURE TO THE VANE CHAMBERS AND TO THE COMPARTMENTS, AND TO EXHAUST THE SAME, WHEREBY THE CAUSE THE ROTOR TO ORBIT IN THE CAVITY.