Patent · US Expired

Piston pump

US6283724A · kind A · utility

12Cited by

9References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Norbert Alaze · Markgröningen, DE
Siegfried Fritsch · Sonthofen, DE
Andreas Weh · Kempten (Allgäu), DE

Key dates

Filing date	Oct 15, 1999
Grant date	Sep 4, 2001
Priority date	—
Expiry date	Oct 15, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B1/0452
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A piston pump for a slip-controlled hydraulic vehicle brake system. For the sake of economical production, the piston pump is embodied with a plastic bush and with a needle of a needle bearing as the piston, and that an inlet valve is accommodated in a valve seat part (96) that is inserted into the bush (16). The invention has an advantage that both the inlet valve and an outlet valve can be mounted coaxially on the bush, and that the bush, because of its elasticity since it is made of plastic, brings about a favorable closing performance of the two valves.

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