Piston assembly
AssigneeDana Motion Systems Italia S.R.L.
InventorsLuca Fontanesi, Alessandro Sassi, David Gambuzzi
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Abstract
The present disclosure relates to a piston assembly, the piston assembly comprising a cylinder extending along an axis and having an open axial end, a cap assembly closing the cylinder at its open axial end, wherein the cap assembly comprises an insertion portion received in the cylinder at its open axial end, and a piston axially movably disposed within the cylinder and partially received in the insertion portion of the cap assembly. The present disclosure further relates to a variable displacement hydraulic unit including said piston assembly.
Claims16
A piston assembly, comprising:
- a cylinder extending along an axis and having an open axial end,
- a cap assembly closing the cylinder at its open axial end, the cap assembly comprising an insertion portion received in the cylinder at its open axial end, and
- a piston axially movably disposed within the cylinder and partially received in the insertion portion of the cap assembly;
- a first biasing member for biasing the piston in a first direction along the axis, and
- an axially displaceable zeroing member limiting axial movement of the first biasing member;
- and
- a worm screw or leadscrew engaged with the zeroing member so that the zeroing member is displaceable along the axis by rotating the worm screw.
A piston assembly, comprising:
- a cylinder extending along an axis and having an open axial end,
- a cap assembly closing the cylinder at its open axial end, the cap assembly comprising an insertion portion received in the cylinder at its open axial end, and
- a piston axially movably disposed within the cylinder and partially received in the insertion portion of the cap assembly;
- a first biasing member for biasing the piston in a first direction along the axis, and an axially displaceable zeroing member limiting axial movement of the first biasing member;
- and
- a rotatable gudgeon including an eccentric pin engaged with the zeroing member so that the zeroing member is displaceable along the axis by rotating the rotatable gudgeon.
Dependencies are inferred from the claim text.