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:
Apr. 24, 2018
Filed:
Jun. 08, 2012
Roy Van Swieten, Hedel, NL;
Johannes Hubertus Jozef Maria Kelders, Vlijmen, NL;
Roy Van Swieten, Hedel, NL;
Johannes Hubertus Jozef Maria Kelders, Vlijmen, NL;
Airopack Technology Group AG, Baar, CH;
Abstract
A novel pumping device () with an actuator () and a head part () for dispensing a fluid from a container () is described. The actuator () comprises an outlet conduit () and a first cylindrical member () and the head part () comprises a second cylindrical member () which is arranged coaxially to the first cylindrical member. A folded membrane member () with an inlet valve () and an outlet valve () is provided between the first () and second () cylindrical members, such that the first () and second () cylindrical members and the folded membrane member () provide a variable pump chamber (). The outlet valve () is arranged relative to the actuator () in such a manner that a suck-back chamber () with a variable volume is provided between the outlet valve () and the outlet conduit (), which is simultaneously reduced as the pumping chamber () is reduced.