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:
Mar. 28, 2017
Filed:
Jul. 02, 2014
Applicant:
Sensirion Holding Ag, Stafa, CH;
Inventor:
Felix Mayer, Stafa, CH;
Assignee:
Sensirion Holding AG, Stafa, CH;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 13/00 (2006.01); F04B 19/00 (2006.01); F04B 43/04 (2006.01); F16K 99/00 (2006.01); A61M 5/145 (2006.01); A61M 5/172 (2006.01); F04B 43/14 (2006.01); F04B 49/22 (2006.01);
U.S. Cl.
CPC ...
F04B 13/00 (2013.01); A61M 5/14586 (2013.01); A61M 5/172 (2013.01); F04B 19/006 (2013.01); F04B 43/043 (2013.01); F04B 43/14 (2013.01); F04B 49/22 (2013.01); F16K 99/0001 (2013.01); F16K 99/003 (2013.01); F16K 99/0032 (2013.01); F16K 99/0044 (2013.01); F16K 2099/0084 (2013.01); F16K 2099/0086 (2013.01); F16K 2099/0094 (2013.01);
Abstract
The pump is provided with a plurality of pumping chambers and electrically activatable valves. An elastic membrane is arranged in each pumping chamber and divides the same into a first and a second chamber section. Each valve is connected to the second chamber section of a pumping chamber. When a pressure drop is applied over the valve and the valve is activated (i.e. opened), the pressure in the second chamber section changes, which causes the membrane to move, which in turn leads to a change of the volumes of both chamber sections. This e.g. allows to pump well-defined amounts of fluid from the chamber sections to a drug dispensing device.