The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 1990
Filed:
Jun. 02, 1988
Manfred Wolf, Markdorf, DE;
Hans Hoppe, Vogt, DE;
Dieter Heep, Bergatreute, DE;
Norbert Eberhard, Ertingen, DE;
Waeschle Maschinenfabrik GmbH, Ravensburg, DE;
Abstract
An apparatus for pneumatically conveying bulk material in particular bulk material which is difficult to handle includes a conveyor line having a plurality of conveyor line sections for transporting the bulk material. Each of the conveyor line sections comprises a rigid outer pipe and an elastic inner pipe of an outer diameter which is smaller than the inner diameter of the outer pipe in pressureless state. The connection of adjacent conveyor line sections is attained by a sectional ring which is placed over each axial end of the outer pipe and about which the elastic pipe is folded outwardly, a flange element arranged between the thus shaped axial ends of adjoining conveyor line sections, and external brace elements extending between successive flange elements for bracing the latter so as to connect adjoining conveyor line sections in pressure-sealed manner. Each flange element receives a valve element and is provided with a radial bore to allow communication between a clean gas carrying secondary line and the conveyor line.