Rotary engine

Claim 1

A ROTRARY ENGINE COMPRISING A FRAME, A POWER SHAFT, AN ANNULAR CYLINDRICAL ATTACHED TO THE FRAME AND SURROUNDING THE SHAFT, A PAIR OF RELATIVELY MOVABLE ROTORS, EACH ROTOR HAVING AT LEAST ONE PISTON IN THE CYLINDER, INDIVIDUAL DRIVING MEANS BETWEEN THE RESPECTIVE ROTORS AND THE SHAFT ADAPTED TO ACCOMMODATE SAID RELATIVE MOVEMENT BETWEEN THE ROTORS, A CAM CONNECTED WITH EACH ROTOR, CAM FOLLOWER MEANS FOR EACH CAM ROTATABLY WITH EACH PORTED ON A FRAME PART, ENGAGEMENT WITH ITS RESPECTIVE CAM, THE CAMS BEING SHAPED FOR SUBSTANTIALLY UNIMPEDCAM, THE CAM BEING SHAPED FOR SUBSTANTIALLY UNIMPEDING ACTIONS OF THE CAM FOLLOWER MEANS ON THE CAMS IN RESPONSE TO CAM MOVEMENTS IN ONE DIRECTION, BUT SUBSTANTIALLY IMPEDING ACTIONS OF THE CAM FOLLOWER MEANS ON THE CAMS IN RESPONSE TO REVERSE CAM MOVEMENTS, WHEREBY THE CAMS ARE INTERMITTENTLY REVERSE-LOCKED, EACH CAM FOLLOWER MEANS COMPRISING A ROCKER ARM, A PIVOT THEREFOR ON SAID FRAME PART, A CAM-ENGAGING ROLLER AT ONE END OF EACH ROCKER ARM, RESILIENT MEANS REACTING BETWEEN A SUPPORT ON SAID FRAME PART AND THE OTHER END OF THE ARM, MEANS FOR ADJUSTING THE POSITION OF SAID FRAME PART ON THE FRAME TO ROTATE, RELATIVE TO THE FRAME, THE FOLLOWER ARM PIVOT AND SAID SUPPORT, AND SECOND ADJUSTING MEANS FOR MOVING SAID SUPPORT RELATIVE TO SAID FRAME PART TO VARY THE REACTION OF SAID RESILIENT MEANS.