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:
Jul. 14, 2015
Filed:
Dec. 14, 2011
Ludwig Daniel Weibel, Waldstatt, CH;
Ludwig Daniel Weibel, Waldstatt, CH;
WEIBEL CDS AG, Waldstatt, CH;
Abstract
A device is placed upon a container that is sealed by a sealing element and filled with a liquid, the device allowing the liquid to be withdrawn. The device is provided with a penetration element with a hollow needle that is held in an unused position on a head section. The penetration element is held by guide elements on the head section so that the element can be pressed against the sealing element in a withdrawal position, in which the hollow needle penetrates the sealing element. At least one aeration channel is provided to equalize the pressure in the container during the withdrawal of the liquid, the channel running preferably along the hollow needle. The air sucked from the atmosphere enters the aeration channel via a filter. This prevents the contamination of the liquid and the latter can be withdrawn without the risk of a reverse flow.