Variable-stroke pneumatic cylinder

Details Variable-stroke pneumatic cylinder Variable-stroke pneumatic cylinder

F - Mech Eng,Light,Heat,Weapons

15

B

F15B 15/14 (2006.01) F15B 15/22 (2006.01) F15B 15/24 (2006.01)

Patent

CA 2404588

A variable-stroke pneumatic cylinder; the cylinder comprises a tubular casing, having fore and rear heads, defining a chamber for reciprocation of a piston member along a working stroke; at least one of the heads is provided with an air inlet/outlet hole connected to a central cavity in the cylinder head, which facing towards the piston chamber. The rear head is provided with a pneumatic damping device comprising a venting path provided with a control valve. The pneumatic cylinder also comprises head extension members to change the working stroke; the extension members are in the form of disk-shaped member secured to the cylinder head. Each disk member is provided with a central hole axially aligned with the central cavity of the cylinder head, and an air venting hole axially aligned with a venting hole branched off from the air venting path.

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