Patent ID: 7174606
Filing Date: 2007-02-13
Classification: F15B

Abstract:
1. A pressure cylinder, comprising: a cylinder housing having one end including an opening; a piston axially displaceable within the cylinder housing; a piston rod coupled to the piston and extending at least through the opening at the one end of the cylinder; a cylinder base closing off the cylinder at an end of the cylinder housing opposite the opening; a pressure chamber defined between the piston and the cylinder base and capable of being pressurized by a pressure medium; and a switching disk for interacting with a switch to determine the position of the piston, the switching disk being displaceably positioned in the pressure chamber in frictional engagement and coaxially with the piston rod so that the switching disk passes to a starting position near the piston in response to a pressure impulse overcoming the frictional engagement when the pressure chamber is first pressurized.