Hydraulic ram for lift truck

Claim 1

IN AN INDUSTRIAL TRUCK, STATIONARY UPRIGHT, EXTENDIBLE UPRIGHTS MOUNTED FOR VERTICAL MOVEMENT ON SAID STATIONARY UPRIGHTS, SAID EXTENDIBLE UPRIGHTS TILTING A LIMITED AMOUNTED IN A LATERAL DIRECTION RELATIVELY TO THE TRUCK DUE TO THE LATERAL FORCE CAUSED BY THE WEIGHT OF A LOAD SUPPORTED ON SAID EXTENDIBLE UPRIGHTS, A LOAD CARRIAGE MOUNTED FOR VERTICAL MOVEMENT ON SAID EXTENDIBLE UPRIGHTS, A VERTICALLY EXTENDING HYDRAULIC RAM HAVING A CYLINDER PART AND A PISTON PART EXTENDIBLE BY HYDRAULIC PRESSURE RELATIVELY TO SAID CYLINDER PART, MEANS MOUNTING ONE OF SAID PARTS OF SAID RAM IN POSITION ALIGNED WITH AND FIXED REALTIVE TO SAID STATIONARY UPRIGHTS ON SAID STATONARY UPRIGHTS, CONNECTING MEANS OPERATIVELY CONNECTING THE OTHER OF SAID PARTS TO SAID EXTENDIBLE UPRIGHTS AND LOAD CARRIAGE WHEREBY RELATIVE EXTENDIBLE UPRIGHTS AND LOAD CARRIAGE OF SAID EXTENDIBLE UPRIGHTS AND ELEVATION OF SAID LOAD CARRIAGE, SAID LATERAL FORCE BEING TRANSMITTED THROUGH SAID CONNECTING MEANS TO TILT SAID OTHER PART OF THE RAM IN A LATERAL DIRECTION RELATIVELY TO SAID ONE PART WHEN THE EXTENDIBLE UPRIGHTS TILT, SAID PISTON PART OF SAID RAM BEING SUFFICIENTLY SPACED FROM THE WALL OF SAID CYLINDER PART WHEREBY SAID PISTON PART CYLINDER WALL WILL REMAIN OUT OF CONTACT WITH EACH OTHER WHILE THE EXTENDIBLE UPRIGHTS TILT THEIR LIMITED AMOUNT, A SEAL MEMBER IN FLUID SEALING RELATION TO SAID PISTON PART, AND MEANS ON SAID CYLINDER PART MOUNTING SAID SEAL MEMBER FOR PIVOTAL MOVEMENT RELATIVELY TO SAID CYLINDER PART WHEREBY SAID PISTON PART AND SEAL MEMBER MAY PIVOT TOGETHER RELATIVELY TO SAID CYLINDER PART TO ALLOW LATERAL TILTING OF SAID PISTON PART DURING EXTENSION OF SAID RAM.