Patent ID: 6758127
Filing Date: 2004-07-06
Classification: F15B

Abstract:
A pressurized medium activated working cylinder comprising an elongated cylinder body (3) having end parts (1, 2) at opposite ends thereof,said cylinder body (3) and end parts (1,2) defining a cylinder chamber (4), a piston (6) supported for axial movement in said cylinder chamber (4) between end positions adjacent each end part (1, 2), said piston (6) including a rigid body portion with a sealing member in interposed relation between a perimeter of the rigid body portion and a wall of the cylinder chamber for providing sliding sealing contact therebetween, said piston (6) having a piston rod (7) fixed thereto and extending in sealed relation through at least one of the end parts (1) for relative movement, a feed device (13, 14) associated with each end of the cylinder for feeding and discharging pressurized medium into the chamber on a respective side of said piston (6), a damping device (22, 17) associated with each end of The cylinder for damping movement of the piston when it approaches a respective end position, each damping device including a damping pin (22) and a receptacle (18) having an opening (17) that matches the pin on a side of the piston (6) facing the respective end part, said damping pin (22) being insertable into the receptacle opening (17) when the piston approaches an end position, said damping pin (22) and the receptacle opening (17) being disposed in eccentric relation to the side of the piston rod (7), said receptacle having at least a part projecting from one of the rigid piston body or respective end part (1,2) into the cylindrical cylinder (4), and the other of said rigid piston body portion and respective end part (1, 2) being formed with a recess in a side thereof facing the chamber in an eccentric inwardly spaced relation to the cylinder chamber wall and sealing member for receiving the receptacle projecting part as an incident to movement of the piston to an end position.