Telescopic pneumatic linear actuator, particularly for unwinders with movable arms
AssigneeRenova S.R.L.
InventorsGiampiero Re, Andrea Fantasia
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Abstract
A telescopic pneumatic linear actuator, particularly for unwinders with movable arms, includes a first annular cylinder, provided with a respective cavity, and a second annular cylinder, which can be inserted into and can slide within the cavity of the first annular cylinder and is provided with a respective cavity. The actuator also includes an annular piston, which can be inserted into and can slide within the cavity of the second annular cylinder. The first and second annular cylinders and the annular piston are provided with respective holes for the passage of a self-expanding spindle.
Claims9
A telescopic pneumatic linear actuator comprises a first annular cylinder, provided with a respective annular cavity delineated by an annular wall, a second annular cylinder, which can be inserted into and can slide within said annular cavity of said first annular cylinder and is provided with a respective annular cavity delineated by an annular wall, and an annular piston, which can be inserted into and can slide within said annular cavity of said second annular cylinder, said first and second annular cylinders and said annular piston being provided with respective holes for passage of a self-expanding spindle wherein the respective annular walls separate the respective cavities from the respective holes in the first and second annular cylinders, further comprising an annular pusher plate which can be fixed on said annular piston and is provided with a hole for passage of the self-expanding spindle.
Dependencies are inferred from the claim text.