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. 14, 2006
Filed:
Jun. 04, 2004
Russell L. Baldinger, Adelphi, OH (US);
Danny Lamer, Berthierville Quebec, CA;
Russell L. Baldinger, Adelphi, OH (US);
Danny Lamer, Berthierville Quebec, CA;
Other;
Abstract
A dual-stage vacuum cleaner filter with a pre-filtration cap having pre-filtering screens. A base with an aperture and a filter media strip pleated in the shape of a frustocone can be mounted within the dirt cup of a handheld vacuum. A circular, planar gas impermeable lid is sealingly fixed at the end of the filter media strip opposite the base. The cap is removably mounted to the base covering the filter media strip and lid. The cap has sidewall and endwall pre-filtering screens, and when the sidewall screens become loaded with debris, the endwall screen permits air to flow through a gap between the cap and the lid to the filter media strip.