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. 25, 2000
Filed:
Jan. 19, 1998
Stephen B Schoenberger, Northbrook, IL (US);
Other;
Abstract
A filtration apparatus for an industrial vacuum system which includes a source of vacuum pressure, a collection vessel having an opening at one end for the collection of solid particulate matter and liquid waste material, and a conduit extending between the source of vacuum pressure and a second end of the collection vessel to apply the vacuum pressure to the collection vessel. A filtration chamber forms part of the collection vessel and is located between the two ends of the collection vessel. A filter media array is disposed in the filtration chamber, wherein the filter media array includes a plurality of non-woven or spun-bound pleated filter cartridges in at least two linear columns in the filtration chamber. In a preferred embodiment, control elements provide a maximum pressure differential across the body of the filter cartridges by providing an in-rush of ambient air into the filtration chamber when the pressure differential reaches a pre-determined quantity.