Structure for transmitting rotary motion through a hermetically sealed space

Claim 1

ROTATION TRANSMITTING STRUCTURE COMPRISING, IN A COMBINATION, FLUID-IMPERMEABLE BODY MEANS HAVING OPPOSED INNER AND OUTE ENDS AND FORMED WITH AT LEAST THREE PARALLEL BORES PASSING THERETHROUGH BETWEEN SAID ENDS, PARALLEL TO, EQUIDISTANT FROM AND DISTRIBUTED ABOUT A PREDETERMINED AXIS PASSING THROUGH SAID BODY BETWEEN SAID ENDS THEREOF; MOUNTING MEANS AT THE REGION OF SAID INNER END OF SAID BODY MEANS FOR FIXEDLY MOUNTING THE LATTER AT A PREDETERMINED LOCATION; AT LEAST THREE PLUNGER MEANS RESPECTIVELY SITUATED IN AND EXTENDING THROUGH SAID BORES AND EACH HAVING A PAIR OF OPPOSED SUBSTANTIALLY POINTED ENDS; AT LEAST THREE GUIDE MEANS RESPECTIVELY GUIDING SAID PLUNGER MEANS FOR AXIAL MOVEMENT IN SAID BORES; A DRIVING RING SUPPORTED BY SAID BODY MEANS AT THE REGION OF SAID OUTER END THEREOF FOR ROTATION ABOUT SAID PREDETERMINED AXIS AND HAVING AN ANNULAR SURFACE DIRECTED TOWARD SAID PLUNGER MEANS AND FORMED WITH SUBSTANTIALLY MORE THAN THREE RECESSES EACH SITUATED AT THE SAME DISTANCE FROM SAID PREDETERMINED AXIS AS SAID BORES AND SAID RECESSES HAVING CONFIGURATIONS SUBSTANTIALLY MATCHING THE SUBSTANTIALLY POINTED END PORTIONS DIRECTED TOWARD SAID DRIVING RING; A DRIVEN RING SUPPORTED BY SAID BODY MEANS AT THE REGION OF SAID INNER END THEREOF FOR ROTATION ABOUT SAID PREDETERMINED AXIS AND HAVING AN ANNULAR SURFACE DIRECTED TOWARD SAID PLURALITY OF PLUNGER MEANS AND FORMED WITH SUBSTANTIALLY MORE THAN THREE RECESSES EACH SITUATED AT THE SAME DISTANCE FROM SAID PREDETERMINED