Linear drive
AssigneeWittenstein AG
InventorTobias Gehrig
Life of this patent
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Abstract
Linear drive, in particular for converting a rotational movement into a linear movement for actuating a valve including a shut-off slide, having a crank mechanism, the linear drive comprising a first crankshaft associated with a piston rod via a first connecting rod, a second crankshaft associated with the piston rod via a second connecting rod, and a planetary gear for rotationally driving the first crankshaft and the second crankshaft.
Claims13
A linear drive having a crank mechanism, the linear drive comprising:
- a first crankshaft associated with a piston rod via a first connecting rod,
- a second crankshaft associated with the piston rod via a second connecting rod, and
- a planetary gear for rotationally driving the first crankshaft and the second crankshaft,
- wherein the first crankshaft is associated with an internal gear of the planetary gear, and wherein the second crankshaft is associated with a further internal gear of the planetary gear.
A linear drive having a crank mechanism, the linear drive comprising:
- a first crankshaft associated with a piston rod via a first connecting rod,
- a second crankshaft associated with the piston rod via a second connecting rod, and
- a planetary gear for rotationally driving the first crankshaft and the second crankshaft,
- wherein the first crankshaft has a first transmission ratio, and the second crankshaft has a second transmission ratio, which is different with respect to the first transmission ratio.
A linear drive having a crank mechanism, the linear drive comprising:
- a first crankshaft associated with a piston rod via a first connecting rod,
- a second crankshaft associated with the piston rod via a second connecting rod, and
- a planetary gear for rotationally driving the first crankshaft and the second crankshaft,
- wherein the crankshafts rotate in opposite directions during operation.
Dependencies are inferred from the claim text.