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US 7,931,132 B2Granted
Damper
AssigneeRobert Bosch GmbH
InventorSigmund Braun
Life of this patent
Estimating the term…
Abstract
The invention relates to a damper having a damper cylinder, in which a piston ram is guided via a piston rod, and for adjusting characteristic damper values, the flow of a damper fluid can be controlled. A piezoelectric valve is disposed inside the damper cylinder, and includes a piezoelectric element and an actuator, and an evaluation and control circuit for adjusting the flow of the damper fluid triggers the actuator via the piezoelectric element.
Claims20
A damper having:
- a damper cylinder,
- a piston ram having a passage which allows flow of a damper fluid therethrough,
- a piston rod guiding the piston ram in the damper cylinder,
- flow control means for controlling the flow of said damper fluid through said piston ram for adjusting characteristic damper values, the flow control means comprising a piezoelectric valve, disposed inside the damper cylinder, which valve includes a piezoelectric element and an actuator, and
- an evaluation and control circuit for adjusting the flow of the damper fluid which triggers the actuator via the piezoelectric element.
2 more elements
Dependencies are inferred from the claim text.