Plastic and nonmetallic article shaping or treating: processes – Formation of solid particulate material directly from molten... – Utilizing centrifugal force or rotating forming zone
Patent
1997-07-10
1999-07-06
Theisen, Mary Lynn
Plastic and nonmetallic article shaping or treating: processes
Formation of solid particulate material directly from molten...
Utilizing centrifugal force or rotating forming zone
264 5, B29B 910
Patent
active
059194090
ABSTRACT:
A method of fabricating a multisegmented ball for an electrical twisting ball display device, which is made up of spheroidal balls rotatably disposed in an elastomer substrate. The ball is composed of segments arrayed substantially parallel to one another, each segment being adjacent to at least one other segment and to no more than two other segments, adjacent segments being adjoined to one another at substantially planar interfaces. The method for fabricating the multisegmented spheroidal balls comprises the steps of first providing a multiplicity of liquid flows, each liquid flow having an associated flow rate, each liquid flow being a flow of a hardenable liquid material associated with an optical modulation characteristic. The multiplicity of flows are then merged into a combined liquid flow where each one of the plurality of liquid flows is joined to at least one other of the plurality of liquid flows at a planar interface. After forming a combined liquid flow, a ligament is formed from the combined liquid flow and a plurality of spheroidal balls are formed from the ligament, each of the balls comprising a multiplicity of segments where each one of the multiplicity of segments is joined to at least one other of the multiplicity of segments at a planar interface. After the balls are formed they are hardened.
REFERENCES:
patent: 4261653 (1981-04-01), Goodrich
patent: 5262098 (1993-11-01), Crowley et al.
patent: 5344594 (1994-09-01), Sheridon
Silverman Alexander E
Theisen Mary Lynn
Xerox Corporation
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