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, 1978
Filed:
Jun. 03, 1977
Brian Arthur Head, Maidstone, GB;
Philip C Kimball, Andover, MA (US);
Whatman Reeve Angel Limited, Maidstone, GB;
Abstract
An improved inside-to-outside flow filter tube and method of manufacturing the tube, which filter tube comprises: a plurality of nonwoven fibers having interstices therebetween to define the porosity of the filter tube, the tube containing a binding agent at the junction of the fiber crossovers to provide a self-supporting structure of a defined wall thickness and filter porosity; and an open scrim reinforcing sheet material within the wall of the filter tube extending generally the length of the tube and at least one overlapping revolution about the tube diameter, the fibers of the filter tube bonded integrally through the open scrim material, thereby permitting the use of the filter tube in applications requiring inside-to-outside fluid flow without the necessity for an external peripheral support.