Method for making solid element fluid filter for removing small

Details Method for making solid element fluid filter for removing small Method for making solid element fluid filter for removing small

1987-10-26

1989-01-10

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156633, 156634, 156655, 156656, 1566591, 156663, 427244, B44C 122, C23F 102, C03C 1500, B05D 500

Patent

active

047971754

ABSTRACT:
A fluid filter element, filter, and process for its fabrication, wherein the filter element includes a flat base and a thin layer deposited thereupon having a pattern of channels through which a fluid may flow. In operation, the element is pressed against a flat surface, preferably the back side of another element in a stack of filter elements, whereupon the channels become closed conduit. The channels have a minimum dimension of the thickness of the layer, so that larger particles may not pass therethrough. Fabrication of the thin layer with the channels therein is preferably accomplished by masking a pattern corresponding to the channels and then vapor depositing the remainder of the thin layer, as masking and deposition permits accurate control of the height of the deposited layer, and, then, the minimum dimension of the channels.

REFERENCES:
patent: 2166367 (1939-07-01), Norris
patent: 2226381 (1940-12-01), Norris
patent: 3423261 (1969-01-01), Frantzen
patent: 4058432 (1977-11-01), Schuster-Woldan et al.
patent: 4118288 (1978-10-01), Ruckl
patent: 4119483 (1978-10-01), Hubsch et al.
patent: 4422905 (1983-12-01), Becker

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