Patent · US Expired

Piston pump

US6217300A · kind A · utility

12Cited by

7References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Schuller · Cleebronn, DE
Ursula Eckstein · Schwieberdingen, DE

Key dates

Filing date	Jan 19, 2000
Grant date	Apr 17, 2001
Priority date	—
Expiry date	Jan 19, 2020

Classification

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

Abstract

A piston pump with a piston that is displaceable in a bush. In order to keep the piston in the bush for retention therein a hollow-cylindrical filter, mounted on the bush, with yielding fingers that engage a groove of the piston keep the piston in the bush until the bush has been inserted into a pump housing.

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