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. 26, 2019
Filed:
Mar. 24, 2015
Erbe Elektromedizin Gmbh, Tuebingen, DE;
Waldemar Wandel, Kusterdingen, DE;
Erbe Elektromedizin GmbH, Tuebingen, DE;
Abstract
The pump unit () has a particularly simple design, which includes just two housing parts () and also four valve closure members () and pump pistons (). The valve closure members () are preferably identical to one another and are trapped in a pocket between both housing parts (). The housing parts () are preferably permanently interconnected by an ultrasonic weld seam. The valve closure members are formed by disc-like or plate-like plastic parts, which are resilient per se and which may optionally have a central pin () as an assembly and orientation aid. As desired, the valve closure members bear against their respective valve seat () with or without bias and form valves which open and close particularly reliably, are responsive to the slowest flow velocities and can be easily sterilized.