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US 10,519,986 B2Granted
Actuator
AssigneeDr. Ing. h.c. F. Porsche Aktiengesellschaft
InventorsThomas Geffert, Frank Blum
Life of this patent
Estimating the term…
Abstract
An actuator, such as a pressure actuator or a vacuum actuator, has a housing and a plunger that is guided through the housing. A diaphragm is connected to the housing and to the plunger and forms a gas-tight pressure chamber with the housing. A pressure medium connector is provided on the housing and communicates with the pressure chamber to pressurize the pressure chamber. A braking element is provided on the plunger and enables a braking force can be exerted on the plunger.
Claims15
An actuator, comprising:
- a housing;
- a plunger guided through the housing;
- a diaphragm connected to the housing and to the plunger so that the diaphragm together with the housing forms a gas tight pressure chamber;
- a pressure medium connection provided on the housing and communicating with the pressure chamber to pressurize the pressure chamber;
- a braking element provided on the plunger and being activatable to exert a braking force on the plunger, the braking element has a brake housing, the brake housing having a chamber in which a magnetorheological material is accommodated and through which the plunger is guided;
- and a coil or solenoid extending around the brake housing for generating a controllable magnetic field in a region of the brake housing and thereby generating a controllable braking force on the plunger.
3 more elements
An actuator, comprising:
- a housing;
- a plunger guided through the housing;
- a diaphragm connected to the housing and to the plunger so that the diaphragm together with the housing forms a gas tight pressure chamber;
- a pressure medium connection provided on the housing and communicating with the pressure chamber to pressurize the pressure chamber;
- and a braking element provided on the plunger and being activatable to exert a braking force on the plunger, the braking element has a brake housing through which the plunger is guided, wherein the brake housing is at least partially accommodated in the housing.
2 more elements
Dependencies are inferred from the claim text.