Hydraulic cylinder with end closure assembly

In a hydraulic cylinder having a cylinder barrel with a closed end and an open end, said barrel having an interior bore substantially uniform throughout the length thereof between said closed and to closely adjacent said open end, a piston, a piston rod, a rod gland, the improvement, which comprised a rod gland retainer assembly including a gland retainer welded outwardly of and to said cylinder barrel in the absence of any screw thread connection therebetween, said gland retainer having an internal circumferential ledge, and said assembly further including a split ring spring retainer removably inserted between said ledge and said rod gland for bearing against said rod gland and solely holding said rod gland in place, said rod gland including an outwardly extending flange along its outer extremity fitting into a rabbet groove in an inner edge of said cylinder barrel.

In a hydraulic cylinder having a cylinder barrel, a piston, a piston rod, a rod gland, the improvement which comprises a rod gland retainer assembly including a gland retainer welded outwardly of and to said cylinder barrel in the absence of any screw thread connection therebetween, said gland retainer having an internal circumferential ledge, and said assembly further including a split ring spring retainer removably inserted between said ledge and said rod gland so as to bear against said rod gland to hold it in place, said gland retainer including an inwardly extending circumferential tongue which forms a seat for said cylinder barrel and also forms in combination with said ledge a groove for seating said split ring spring retainer.

In a hydraulic cylinder having a cylindrical barrel with a closed end and an open, a piston slidably disposed within said barrel, a rod gland disposed within and closing said open end of said barrel and having a small central passageway spaced from said barrel and aligned with a longitudinal axis of said barrel, an elongated piston rod spaced from said barrel and slidably disposed in said passageway and having one end attached to said piston and an exposed end external of said barrel, said rod gland carrying sealing means exposed in said small passageway and engaged with said piston rod against leakage for sealing therebetween, said rod gland forming a stop for said piston when said piston rod is fully extended, the improvement comprising a rod gland retainer assembly including a gland retainer welded outwardly of and to said barrel in the absence of any screw thread connection therebetween, said gland retainer having an internal circumferential ledge, and said assembly further including a split ring spring retainer removably inserted between said ledge and said rod gland for bearing against said rod gland and solely holding said rod gland in place, said ledge being tapered adjacent said split ring to provide facility in inserting and removing said split ring spring retainer.

In a hydraulic cylinder having a cylindrical barrel with a closed end and an open end, a piston slidably disposed within said barrel, a rod gland disposed within and closing said open end of said barrel and having a small central passageway spaced from said barrel and aligned with a longitudinal axis of said barrel, an elongated piston rod spaced from said barrel and slidably disposed in said passageway and having one end attached to said piston and an exposed end external of said barrel, said rod gland carrying other sealing means exposed to and engaged with said barrel for sealing against leakage therebetween, said rod gland forming a stop for said piston when said piston rod is fully extended, the improvement comprising a rod gland retainer assembly including a gland retainer welded outwardly of and to said barrel in the absence of any screw thread connection therebetween, said gland retainer having an internal circumferential ledge, and said assembly further including a split ring spring retainer removably inserted between said ledge and said rod gland for bearing against said rod gland and solely holding said rod gland in place, said gland retainer including an inwardly extending circumferential tongue which forms a seat for said cylinder barrel and also forms in combination with said ledge a groove for seating said split ring spring retainer.