Tappet assembly

Claim 1

AN INVERTED HYDRAULIC TAPPET ASSEMBLY FOR AN OVERHEAD CAM SHAFT ENGINE HAVING VALVES WITH STEMS EXTENDING UP THROUGH THE CYLINDER HEAD, AN ALIGNMENT BRACKET ATTACHED TO THE CYLINDRE HEAD ADJACENT EACH VALVE, AND HAVING AN ALIGNMENT COLLAR BETWEEN THE VALVE AND THE ADJACENT CAM OF THE CAM SHAFT; AN INVERTED HYDRAULIC TAPPET SLIDABLE IN SAID COLLAR; SAID TAPPED INCLUDING A HOLLOW TAPPET HOUSING HAVING AN ENLARGED, UPPER MUSHROOMED HEAD IN OPERATIVE CONTACT WITH THE RESPECTIVE CAM OF THE CAM SHAFT, AND HAVING AN OPEN LOWER END; A HOLLOW LASH ADJUSTER BODY SAID OPEN LOWER END AND HAVING A CLOSED LOWER END PROJECTING INTO OPERATIVE CONTACT WITH THE UPPER END OF THE VALVE STEM; A PLUNGER INSIDE SAID HOLLOW LASH ADJUSTER BODY, WITH ITS UPPER END IN ABUTMENT WITH SAID TAPPET HOUSING; A PRESSURE CHAMBER BETWEEN THE LOWER END PORION OF SAID PLUNGER AND THE CLOSED END OF SAID LASH ADJUSTER BODY; A PASSAGE THROUGH SAID TAPPER HOUSING AND A COMMUNICATING PASSAGE THROUGH SAID PLUNGER TO SAID PASSAGE CHAMBER; A CHECK VALVE ON THE LOWER END OF SAID PASSAGE TO PREVENT BACKWARD FLOW FROM SAID PRESSURE CHAMBER THROUGH SAID PLUNGER; AND OIL PASSAGE MEANS THROUGH SAID BRACKET AND COLLAR FROM THE CYLINDER HEAD, TO SAID TAPPED HOUSING PASSAGE AND SAID PLUNGER PASSAGE FOR FLOW TO SAID PRESSURE CHAMBER.