Patent · US Expired

Media dispenser having a vent with a microbic barrier

US5988449A · kind A · utility

35Cited by

12References

25Claims

0Family size

Assignee

Ing. Erich Pfeiffer GmbH · DE

Inventors

Karl-Heinz Fuchs · Radolfzell, DE
Andreas Graf · Gottmadingen, DE

Key dates

Filing date	Jul 2, 1997
Grant date	Nov 23, 1999
Priority date	—
Expiry date	Jul 2, 2017

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB05B15/30
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A dispenser (1) including a reservoir (4), a pump (6) and an atomizing nozzle (17) has on the nozzle (17) a germ barrier (22) in the form of a valve that opens and closes dependent on pressure. A further germ barrier (23) with a filter (54) acting as a seal in the connecting area between reservoir (4) and pump (6) is provided in a venting channel (21). Both units (2, 3) of the device (1), which are actuated against each other, are prevented from being pulled apart by a snap device (50). Germ penetration into the entire dispenser (1) can be effectively prevented.

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