Presses – Methods – Forcing through constricted passage
Patent
1986-10-21
1988-07-19
Falik, Andrew M.
Presses
Methods
Forcing through constricted passage
100 72, 100179, 100244, 100264, 100215, 53530, B30B 702, B30B 704
Patent
active
047577576
ABSTRACT:
A first body has a cylindrical section that is adjacent a conical section so as to form a constricted passage through which granular solids are forced under pressure. Passage through the constriction results in the application of shear forces to the granular solids which degrades some of the particles to create fines to fit between the larger particles and which induces interparticle motion that facilitates the compaction process. After passing through the constriction, the compacted solids are received in a cylindrical receiving chamber, into which a piston can be inserted for the application of direct compression forces. In a preferred embodiment, the granular solids are forced through several constricted passages in sucession, resulting in several stages of compaction prior to the final stage of direct compression.
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patent: 3621775 (1971-11-01), Dedio et al.
patent: 3802337 (1974-04-01), St. Hiliare
patent: 3827213 (1974-08-01), Matzinger
patent: 3854397 (1974-12-01), Dempster
patent: 3956981 (1976-05-01), Pitt
patent: 4073229 (1978-02-01), O'Rourke et al.
patent: 4102109 (1978-07-01), Modra et al.
Falik Andrew M.
Jr Johanson, Inc.
McKown Daniel C.
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