Patent · US Expired

Reciprocating pump

US5567135A · kind A · utility

11Cited by

4References

25Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Erwin Mueller · Munich, DE
Wolfgang Schuller · Cleebronn, DE

Key dates

Filing date	Nov 29, 1995
Grant date	Oct 22, 1996
Priority date	—
Expiry date	Nov 29, 2015

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T8/4031
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A reciprocating pump including a piston through which fluid can flow. The piston includes an inlet valve which presses a valve ball against a valve seat in a longitudinal bore in the piston. One end of the piston has a cap-shaped support elements attached thereto against which the inlet valve spring is supported and which engage around an end behind an undercut in the piston.

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