Seal construction for power cylinder

Claim 1

A HYDRAULIC CYLINDER COMPRISING A WALL FORMING A CHAMBER, A PISTON IN SAID CHAMBER, A ROD CONNECTED TO THE PISTON AND EXTENDING BEYOND THE END OF THE CYLINDER, AN END MEMBER FOR SAID CYLINDER HAVING A BORE FOR RECEIVING SAID ROD AND A CYLINDRICAL RECESS SURROUNDING SAID BORE AND EXTENDING INWARDLY FROM THE OUTER END AND TERMINATING IN AN ANNULAR SHOULDER AROUND SAID BORE, A TEFLON SEALING BAND AROUND THE ROD AND SEATED IN SAID RECESS AGAINST SAID SHOULDER, A GASKET OF RUBBER AROUND SAID BAND IN SAID RECESS, AN ANCHOR RING SEATED IN SAID RECESS AGAINST SAID GASKET AND HAVING A CENTRAL THREADED HOLE SPACED FROM SAID ROD AND A FLAT PORTION ON THE PERIPHERY, A BALL DISPOSED ON SAID PORTION WITHIN SAID RECESS, A SNAPRING FOR RETAINING SAID RING IN SAID RECESS, A NUT HAVING A BORE FOR SAID ROD AND AN EXTERNALLY THREADED STEM FOR THREADING INTO SAID ANCHOR RING AND ABUTTING AGAINST SAID BAND AND GASKET, A WASHER ON SAID STEM BETWEEN SAID NUT AND SAID END MEMBER, AND A SET SCREW IN SAID NUT ADAPTED TO ENGAGE SAID WASHER.