Patent · US Expired

Piston pump for a vehicle brake system

US6161466A · kind A · utility

13Cited by

11References

14Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Schuller · Cleebronn, DE
Andreas Weh · Kempten (Allgäu), DE
Tobias Fluck · Immenstadt im Allgäu, DE

Key dates

Filing date	Jun 14, 1999
Grant date	Dec 19, 2000
Priority date	—
Expiry date	Jun 14, 2019

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B53/20
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a piston pump (10) with a piston (20) axially displaceable in a bush (12). In order to keep the piston (20) captive in the bush (12), the invention proposes that an annular loss-prevention means (90), with conically protruding spring tongues (96), be inserted in the manner of a snap connection into a V-shaped groove (80) in the bush (12), whose spring tongues (96) resiliently press a groove side (98) of a groove (34) made in the piston (40) into the groove (34), engaging it from behind, when the piston (20) is introduced into the bush (12). (FIG. 1)

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