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:
Nov. 28, 2006
Filed:
Jun. 21, 2001
Jürgen Schnatterer, Wolfschlugen, DE;
Günter Gebauer, Esslingen, DE;
Jürgen Schnatterer, Wolfschlugen, DE;
Günter Gebauer, Esslingen, DE;
Festo AG & Co., Esslingen, DE;
Abstract
A vacuum producing device () possessing a principal suction nozzle unit () with a shut off valve () on the upstream side thereof and an additional suction nozzle unit () connected in parallel to the principal suction nozzle unit (). While the supply of pressure medium for the principal suction nozzle unit () is controlled in a manner dependent on the negative pressure produced by controlling the shut off valve (), the additional suction nozzle unit () remains () constantly in operation. This means that a complete build up of vacuum may be ensured in conjunction with a complete switching off of the principal suction nozzle unit () together with a resulting air economizing effect.