Abstract: A piston rod-free pressure cylinder, in which a force reducer (15) is connected by means of a lateral projection (14) to the working piston (13), has a brake mechanism (19), which acts with a brake lining (27) on the outside of the pressure cylinder (11). Action takes place in such a way that no transverse forces are exerted on the projection (14).

Abstract: An improved sealing structure for a pressure fluid cylinder of the type comprising a cylinder, a longitudinal slot in the cylinder, and a driver attached to a piston movable in the cylinder, the driver extending through the slot. The sealing structure includes a strip positioned to overlie the slot in the sealing relation, the strip extending into sealing contact with the inside surface of the cylinder on opposite sides of the slot. That inside surface area of the cylinder which the strip overlies in sealing relation is provided with a cross-sectional radius greater than the cross-sectional radius of that cylinder surface area not in contact with the strip. Preferably the strip is chamfered on its inside surface toward its edges so that the height of the opposed strip edges is no greater than 0.1 mm.

Abstract: A fork lift frame that supports a pair of forks. Each fork has a vertical portion and a load supporting horizontal portion. A hinge assembly is attached to the vertical portion of each fork at an acute angle relative to the vertical portion of the forks so that the horizontal portion of the forks can be positioned across the front of the frame in a vertically spaced position when they are not in use.