Patent ID: 6415706
Filing Date: 2002-07-09
Classification: F05C,F15B

Abstract:
Actuator (6) for use at high and low temperatures constructed as a working cylinder with cylinder housing (8), piston (14) slidable therein and piston rod (22) attached to piston (14), characterized in that the piston rod (22) is connected to piston (14) by means of a head bearing (24) having a cavity (32) in which a part of the piston rod (22) is engaged and said cavity and engaged piston rod being moveable tansversely and radially to the cylinder's longitudinal axis, in that at least the cylinder housing (8), the piston (14) and the head bearing (24) consists of material or materials having low thermal expansion, and in that the head bearing (24) consists of a round disc (26) in which the cavity (32) is formed, and in which a ball-shaped end (34) of the piston rod is engaged to form a ball joint.