Patent ID: 7089848

Claim:
A fluid actuated piston and cylinder assembly comprising: a cylinder housing having a head end and cap end; a piston slidably mounted within said cylinder; a piston rod attached to said piston for being slidably movable with respect to said cylinder housing between an extended position and retracted position with said piston rod extending out of said head end of said cylinder housing; said cylinder having a first fluid port communicating with the interior of the cylinder housing adjacent the cap end to act against a first surface of said piston for extending said piston rod; a mechanism for retracting said piston rod into said cylinder when said fluid pressure in said cap section is relieved; and a linear bearing assembly radially interposed between the cylinder housing and piston rod for slidably engaging the piston rod along the axial direction with respect to the cylinder; said linear bearing assembly being fitted against relative rotation between the piston rod and the cylinder housing.