Conveyors: fluid current – Having means for maintaining load in suspension along flow path – Including permeable member
Patent
1988-12-19
1991-07-09
Peters, Jr., Joseph F.
Conveyors: fluid current
Having means for maintaining load in suspension along flow path
Including permeable member
406 90, 406138, B65G 5338
Patent
active
050300377
ABSTRACT:
A porous filter pad for use in conjunction with a fluid pressure conveying system is disclosed. The porous filter pad includes a rigid, self-supporting molded plastic body having a predetermined elongated shape with opposed walls. Openings of a predetermined porosity are provided along one wall and openings of a predetermined smaller porosity are provided along the other wall. Inner tortuous pathways within the molded plastic body interconnect the openings between the opposed walls. The molded plastic body includes a plurality of molded and bonded particles which are formed in close proximity to one another at least along the wall having the openings of predetermined smaller porosity and are compressed into a more compact and dense relationship as a coherent mass with the openings of predetermined smaller porosity therein.
REFERENCES:
patent: 3236422 (1966-02-01), Bailey et al.
patent: 3302979 (1967-02-01), Rollins et al.
patent: 3862707 (1975-01-01), Reiter
patent: 4262034 (1981-04-01), Anderson
patent: 4371295 (1983-02-01), Hart
patent: 4439072 (1984-03-01), Goodken
Denk Paul M.
Ellis Christopher P.
Peters Jr. Joseph F.
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