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. 27, 2012
Filed:
Dec. 28, 2006
Johan Bejhed, Uppsala, SE;
Mikael Karlsson, Uppsala, SE;
Johan Bejhed, Uppsala, SE;
Mikael Karlsson, Uppsala, SE;
NanoSpace AB, Uppsala, SE;
Abstract
A single use valve () comprises a plate () having an internal filter structure (). A sealing substance () covers an inlet () to the filter structure (). A heater arrangement () is arranged at the plate () in the vicinity of the sealing substance () for converting electrical current into heat and thereby melting or evaporating the sealing substance (). The heater arrangement () conducts at least a part of the current, and preferably the entire current, along a conduction path not including the sealing substance (). The melting of the sealing substance () thereby becomes independent on the existence of a complete electrical connection through the sealing substance (). The heater arrangement () has therefore preferably its main heat emission in an area surrounding the sealing substance (). The sealing substance () can be of any non-porous material.