Plastic article or earthenware shaping or treating: apparatus – Means to create a vacuum or apply fluid pressure within a... – Isostatic type
Reexamination Certificate
2007-07-16
2009-06-30
Gupta, Yogendra (Department: 1791)
Plastic article or earthenware shaping or treating: apparatus
Means to create a vacuum or apply fluid pressure within a...
Isostatic type
C425S419000, C425S423000, C425SDIG019
Reexamination Certificate
active
07553149
ABSTRACT:
An isostatic die for tile forming comprising a metal body (2) and an elastically deformable membrane (6, 6′, 6″) which is solidly gripped to the metal body (2) in a plurality of distinct predetermined fixing zones (25, 28, 290, 21, 22, 24′, 24″), such that an intermediate hermetically sealed chamber is delimited between the elastic membrane (6, 6′, 6″) and the metal body (2), which chamber is destined to contain an incompressible fluid. Rigid bushings (5, 5″) are sunk into the elastic membrane (6, 6′, 6″), each of which rigid bushings (5, 5″) is located at a fixing zone (25, 28, 290, 21, 22, 24′, 24″) of the elastic membrane (6, 6′, 6″) to the metal body (2), and defines a breather mouth lo (52) which passes into a body of the elastic membrane (6, 6′, 6″) and which communicates with an outside environment through a system of discharge conduits (9) afforded in the metal body (2), each rigid bushing (5, 5″) receiving a respective obturator body (7), which obturator body (7) enables passage of air and at least partially prevents passage of ceramic powder.
REFERENCES:
patent: 4133626 (1979-01-01), Schubart
patent: 4518341 (1985-05-01), Suffa
patent: 6004126 (1999-12-01), Strobel
patent: 1297934 (2003-04-01), None
patent: 2673566 (1992-09-01), None
Tagliati Daniele
Tagliati Davide
Tagliati Michele
Browdy and Neimark , P.L.L.C.
Gupta Yogendra
Nguyen Thu Khanh T
TA-RO Progetti S.N.C.
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