Patent · US Active

Piston pump with compact retention device for a restoring spring

US8011907B2 · kind B2 · utility

2Cited by

8References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Rene Schepp · Waiblingen, DE
Wolfgang Schuller · Cleebronn, DE
Juergen Reiner · Gestratz, DE

Key dates

Filing date	Jul 14, 2005
Grant date	Sep 6, 2011
Priority date	—
Expiry date	Nov 29, 2026

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF04B1/0426
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A piston pump having a retaining device for retaining a spring element for restoring a closing element of a valve; the retaining device includes a receiving region for receiving and bracing the spring element and an integrally formed sealing region, in order to seal off a pressure chamber from a low-pressure region of the piston pump.

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