Patent · US Active

Discharge valve and damper for a piston pump

US9140257B2 · kind B2 · utility

0Cited by

8References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Heiko Jahn · Tamm, DE
Marc Zimmerman · Concord, US
Martin Juretko · Hildesheim, DE
Oliver Hennig · Löwenstein, DE

Key dates

Filing date	Oct 28, 2010
Grant date	Sep 22, 2015
Priority date	—
Expiry date	Nov 18, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B53/166
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A piston pump as a return pump of a slip-controlled, hydraulic vehicle braking system is disclosed. There is a mushroom-shaped shut-off body as a spring-loaded outlet valve, the shaft thereof extending through a center hole of a tubular damper piston. The shut-off body is movable transversely to the opening and closing direction thereof, so that said shut-off body aligns with a valve seat upon closing. Upon opening, the damper piston forces brake fluid out of a damping chamber in which it is housed so that an opening movement of the outlet valve is dampened.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.