Frangible seal coating and its method of production

Details Frangible seal coating and its method of production Frangible seal coating and its method of production

1984-11-29

1985-10-22

Jacobs, Lewis T.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

427204, 427327, 427386, C08K 340, B32B 2738, B32B 2714

Patent

active

045488630

ABSTRACT:
A gas seal between two relatively moving parts is produced by coating one of the parts with epoxy resin which is then dusted with microspheres having widely varying diameters. The microspheres are concentrated near the surface of the resin and held in place by a wicking action of the resin on the surface of the microspheres. When the two parts are assembled and moved relative to each other, the microspheres near the surface are broken away to a level which provides a close tolerance gas seal between the two moving parts. The broken microspheres create pockets which aid in the sealing process because they provide a change from laminar flow to turbulent flow in the sealing area.

REFERENCES:
patent: 3547455 (1970-12-01), Daunt
patent: 3575427 (1971-04-01), Lapac et al.
patent: 3975165 (1976-08-01), Elbert et al.
patent: 4376151 (1983-03-01), Parrotta
patent: 4423097 (1983-12-01), Mons et al.

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