Patent · US Expired

Filterless industrial vacuum cleaner operated by compressed gas and suitable for connection to an existing suction and filtering system

US5867865A · kind A · utility

4Cited by

2References

2Claims

0Family size

Assignee

T.E.T.-Umwelttechnik Gesellschaft fur Lufttechnische Verfahren mbH · DE

Inventors

Herbert J. Obermuller · Gelnhausen, DE
Ulrich H. Kethers · Gelnhausen, DE

Key dates

Filing date	Jul 17, 1996
Grant date	Feb 9, 1999
Priority date	—
Expiry date	Jul 17, 2016

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB08B15/00
WIPO fieldFurniture, games
WIPO sectorOther fields

Abstract

A device for extraction of vacuum-cleaned material comprising a propellant ozzle (1) operated by propellant gas that has on a suction side a vacuum tube (4) with vacuum tool (20) on the end for extraction of vacuum cleaned material and on a discharge side is connected to an extraction pipe (9) leading to a suction and filtering system, wherein means (5,6) to automatically trigger a function switching on said propellant nozzle (1) when said vacuum tool (20) is removed from its rest position and that automatically trigger a function switching off said propellant nozzle (1) when said vacuum tool (20) is inserted in its res position into a mounting (7) into which a plunger (6) of a valve (5) controlling the propellant gas slidably projects.

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