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:
Aug. 28, 1990
Filed:
May. 17, 1989
Waeschle Maschinenfabrik GmbH, Ravensburg, DE;
Abstract
A pipe switch for plants for pneumatically conveying of bulk material includes a housing with three ports and having a rotatable cock for selectively connecting one port with the second or third port. The cock is provided with two pipe sections which define two flow paths and are connected at their ends via suitable ring segments. One of the ring segments is of sufficient dimension to sealingly bar the one port which is not in communication with the first port when the cock is in the respective end position. A journal connects the pipe sections at a central location thereof and is rotatably supported in side cover plates of the housing for allowing a rotation of the cock between the two end positions.