Pumping apparatus for a vehicle brake system
AssigneeLucas Automotive GmbH
InventorFrank Lubischer
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Abstract
The fundamental approach of the present invention is to dispose bushes, in which pistons of a pumping apparatus for a vehicle brake system are movably disposed, in such a movable manner that they themselves may in dependence upon movements of the pistons act as pistons in order to supply brake fluid to the vehicle brake system. In particular, the bushes, whose pistons are pumping brake fluid into an associated brake circuit, do not act as pistons. On the other hand, brake fluid is fed back into a brake circuit by bushes, whose pistons are pumping substantially no brake fluid into the brake circuit but are taking in e.g. brake fluid removed from the vehicle brake system in order subsequently to pump it back into the brake circuit.
Claims18
Pumping apparatus for a vehicle brake system, comprising
- a housing,
- bushes movably disposed in the housing, and
- pistons movably disposed in the bushes, wherein the bushes are movable in dependence upon movements of the pistons,
- characterized in that
- the bushes cooperate in such a way that movements of one of the bushes in response to movements of the piston disposed therein give rise to movements of the other bushes.
Dependencies are inferred from the claim text.