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:
Dec. 24, 1996
Filed:
Feb. 16, 1995
David B Pall, Roslyn Estates, NY (US);
James T Connors, Jr, Groton, NY (US);
Pall Corporation, East Hills, NY (US);
Abstract
The present invention provides a bag filter comprising a melt-blown fibrous nonwoven web formed into a bag configuration with a closed end, an open end, an inside surface, and an outside surface. The bag filter is constructed such that (a) the fibrous nonwoven web comprises fibers such that 90% of the fibers have a diameter ranging from a minimum fiber diameter to a maximum fiber diameter which is no more than about three times the minimum fiber diameter, (b) the fibrous nonwoven web as oriented in the bag filter has a tensile strength in the circumferential direction at least about 1.5 times the tensile strength in the longitudinal direction, and/or (c) there is no side seam and an injection-molded thermoplastic elastomer end closure. The present invention also provides a method of treating a fluid by passing the fluid through such a bag filter.