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:
Feb. 24, 1981
Filed:
Jan. 16, 1980
Robert C Brumfield, Incline Village, NV (US);
Other;
Abstract
In the manufacture of wound hollow fiber dialysis cartridges, rigid preliminary tube sheets are formed near each end of the winding, outwardly of the area of the winding which will ultimately be used in finished cartridges. The preliminary tube sheets are then cut transversely to the winding mandrel to expose the hollow fiber ends. The cut preliminary tube sheets, mandrel, and fibers now form a unitary structure which can be washed and treated to make the fiber surface easily adherable to the potting material from which the permanent tube sheets are thereafter formed. After forming the permanent tube sheet, the winding is cut into individual cartridges, and the preliminary tube sheets are discarded.