Briquetting die for dispersible fiber briquettes

Details Briquetting die for dispersible fiber briquettes Briquetting die for dispersible fiber briquettes

2005-03-30

2008-11-18

Gupta, Yogendra (Department: 1791)

Plastic article or earthenware shaping or treating: apparatus

Sets of press couples comprising registering female mold...

Mounted on rolls

C425S363000, C425S122000

Reexamination Certificate

active

07452200

ABSTRACT:
A briquetting die set comprises first and second mating cylindrical dies. The first die has a plurality of adjacent recesses surrounded by a wall having an upper rim. At least a portion of the upper rim of each recess is common to an adjacent recess and has a relatively small radius of curvature. The second mating die has mirror image recesses thereon. When the first and second dies are brought into mating relationship, the upper rims of the first and second plurality of recesses mate with each other in substantially line contact to form a briquetting cavity.

REFERENCES:
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patent: 4411611 (1983-10-01), Ohtawa et al.
patent: 4798529 (1989-01-01), Klinner
patent: 4824352 (1989-04-01), Hadley et al.
patent: 5017124 (1991-05-01), Holley
patent: 5382149 (1995-01-01), Yates et al.
patent: 5733587 (1998-03-01), Ream et al.
patent: 6009690 (2000-01-01), Rosenberg et al.
patent: 6032446 (2000-03-01), Gola et al.

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