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. 30, 1999
Filed:
May. 29, 1997
Edward F Urquhart, Issaquah, WA (US);
Mark A Honnell, Rathdrum, ID (US);
Other;
Abstract
A pressure relief valve for use with flexible containers holding coffee, especially ground coffee, is disclosed. The valve incorporates a unique two piece structural arrangement that requires a low level of precision compared to similar valves. The valve comprises a valve body including a valve chamber having a resilient diaphragm located therein for opening and closing the valve. A set of valve retainers formed integral with the valve body ensure that the diaphragm remains within the valve chamber. A viscous liquid helps ensure an air-tight seal and also acts to retain the diaphragm against a valve seat within the valve chamber. Inlet slots are sized and shaped to effectively prevent coffee grounds from entering the valve without need of a filter or filter paper.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile