Fluid transmission devices

Claim 1

A PUMP OR THE LIKE COMPRISING, A PUMP BODY AND A CAM PLATE WHICH ARE RELATIVELY ROTATABLE, SAID PUMP BODY HAVING A PLURALITY OF CIRCULARLY ARRANGED CHAMBERS GENERALLY PARALLEL TO THE AXIS OF RELATIVE ROTATION, SAID CAM PLATE HAVING A BEARING SURFACE FACING SAID PUMP BODY AND ANGLED FROM A PLANE NORMAL TO THE AXIS OF RELATIVE ROTATION, PISTONS RESPECTIVELY RECIPROCABLE IN SAID CHAMBERS AND PROJECTING FROM ONE END THEREOF TOWARDS SAID CAM PLATE, SAID PISTONS HAVING SPHERICAL BALL ENDS, CAPS HAVING SOCKETS RESPECTIVELY RECEIVING SAID BALL ENDS, SAID CAPS FURTHER HAVING FLANGES DISPOSED IN A COMMON PLANE, WHICH PLANE IS COINCIDENT WITH THE CENTERS ABOUT WHICH THE BALL ENDS ARE GENERATED, A WOBBLE PLATE HAVING OPPOSED SURFACES, ONE OF WHICH BEARS AGAINST THE ANGLED SURFACE OF THE CAM PLATE AND THE OTHER OF WHICH IS RELIEVED TO RECEIVE THE PORTIONS OF SAID CAPS OUTWARDLY OF SAID COMMON PLANE, THE OTHER OF THE SURFACES OF SAID WOBBLE PLATE PROVIDING A BEARING SURFACE ENGAGED BY THE CAP FLANGES ON SAID COMMON PLANE, AND MEANS PREVENTING RELATIVE ANGULAR MOVEMENT BETWEEN SAID WOBBLE PLATE AND SAID PISTON BODY ABOUT SAID AXIS OF RELATIVE ROTATION WHEREBY THE PLATE IS NUTATED RELATIVE TO SAID PISTON BODY, DURING SAID RELATIVE ROTATION, AS THE PISTONS ARE RECIPROCATED IN SAID CHAMBERS, AND THRUST FORCES ARE TRANSMITTED BETWEEN THE PISTONS AND CAM PLATE WITH NO TENDENCY TO TIP THE CAPS RELATIVE TO SAID WOBBLE PLATE.