Patent · US Expired

Reciprocating diaphragm pump with packless piston-cylinder unit

US6299419A · kind A · utility

36Cited by

6References

7Claims

0Family size

Assignee

Lang Apparatebau GmbH (Lang) · DE

Inventors

Herbert Hunklinger · Siegsdorf, DE
Klaus Rutz · Vachendorf, DE

Key dates

Filing date	Jan 21, 2000
Grant date	Oct 9, 2001
Priority date	—
Expiry date	Jan 21, 2020

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF05C2203/0804
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

This invention provides a sealing mechanism for sealing the piston-cylinder unit of a reciprocating diaphragm pump to ensure that the piston-cylinder unit is permanently and reliably sealed while being simple to assemble. The invention further provides a piston-cylinder unit which has almost no play in the micrometer (.mu.m) range, and which is sealed by hydrodynamically sealing a slot thereof.

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