Piston pump for a vehicle brake system
AssigneeRobert Bosch GmbH
InventorsDieter Merklein, Siegfried Fritsch, Ralf Zitzelsberger, Andreas Weh, Michael Hellebrandt
Life of this patent
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Abstract
A piston pump which is intended for use in a vehicle for a hydraulic, slip-controlled braking system. To enable producing the piston pump inexpensively, a bush is made without undercuts as an upset part integrally with a bottom which has a valve seat for the outlet valve of the piston pump.
Claims11
A piston pump comprising a piston that is driven to execute a reciprocating stroke motion and is axially displaceably received in a bush which is inserted into an installation space in a pump housing, the bush (16) being formed substantially solely by means of an upsetting operation.
A piston pump comprising a pump housing, a piston that is driven to execute a reciprocating stroke motion and is axially displaceably received in a bush which is inserted into an installation space in said pump housing, a closure part, which is inserted into said housing sealing off an installation space, the closure part (66) is joined to the bush (16), and that the closure part (66) is held and sealed off in the installation space (14) by caulking (74).
A piston pump comprising a piston that is driven to execute a reciprocating stroke motion and is axially displaceably received in a bush which is inserted into an installation space in a pump housing, and the bush (16) is a deformed part, in which the bush (16) has substantially no constriction which interferes with the forming of the bush by an upsetting operation.
Dependencies are inferred from the claim text.