Method of making self-supporting tubular filter

Details Method of making self-supporting tubular filter Method of making self-supporting tubular filter

1977-11-23

1978-12-19

Derrington, James H.

Plastic and nonmetallic article shaping or treating: processes

Mechanical shaping or molding to form or reform shaped article

To produce composite, plural part or multilayered article

210484, 210497R, 264250, 264257, 264266, 264DIG48, B29F 100

Patent

active

041306228

ABSTRACT:
A self-supporting tubular filter including a sleeve of filter material and a frame formed by longitudinal and circumferential ribs attached to the sleeve. The filter is characterized by a longitudinal separation along a substantial length of the sleeve which is spliced together by one of the longitudinal ribs. That rib extends through the separation so that it overlies and is attached to the interior and exterior surfaces of the sleeve adjacent to the separation. Also disclosed are the use of the filter as a microemboli blood filter and a method of its manufacture employing a single male core pin with first and second female molds.

REFERENCES:
patent: 3746595 (1973-07-01), Leason
patent: 3890679 (1975-06-01), Simon
patent: 4014796 (1977-03-01), Sugiyama et al.

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