Fluid-operated drive
AssigneeFeramatic AG
InventorBruno Weber
Life of this patent
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Abstract
The invention relates to a drive, particularly a push and pull drive, which has a cylinder with a cylinder inner chamber (Z) and a cylinder axis (F) and a piston movably arranged in the cylinder and to which is fixed a flexible force transfer means (U). For a double-action drive the cylinder inner chamber (Z) or the piston must have a larger cross-sectional surface than the force transfer means (U). In order that, despite this, the cylinder wall can serve as a guidance means for the flexible force transfer means, either the cylinder inner chamber or the force transfer means has a non-circular cross-section, so that on a cross-section there are at least two points (A1 to A3), on which the cylinder inner wall can guide the force transfer means.
Claims10
A fluid-operated drive comprising the combination of
- a cylinder having an inner wall defining a cylinder chamber;
- a piston movable in said cylinder chamber;
- flexible force transfer means attached to said piston, said piston having a larger cross-section than a cross-section of said force transfer means to permit access of fluid under pressure to both sides of said piston, said force transfer means being at least partly guided by said inner wall of said cylinder;
- and
- means for supplying said fluid under pressure to both sides of said piston.
Dependencies are inferred from the claim text.