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. 03, 2009
Filed:
Mar. 24, 2005
Applicant:
Karl K. Hoffman, Arlington Heights, IL (US);
Inventor:
Karl K. Hoffman, Arlington Heights, IL (US);
Assignee:
Plitek, LLC, Des Plaines, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 53/04 (2006.01); B01D 53/22 (2006.01);
U.S. Cl.
CPC ...
Abstract
A reversed pressure relief valve that is used in connection with a computer hard disk drive so as to vent pressurized gases contained within the disk drive while not permitting debris to enter the drive mechanism or the valve. More specifically, the present invention is a reversed direction valve which includes at least one passageway defined by at least a lifter ring, a dry strap, a pressure sensitive adhesive ('PSA')/body film and a filter media.