Die retaining element

Details Die retaining element Die retaining element

1996-10-28

1999-03-23

Mackey, James P.

Plastic article or earthenware shaping or treating: apparatus

Female mold and means to feed measured charge of fluent...

Means to move feed means to female mold

425448, B29C 4334, B30B 1530

Patent

active

058856269

ABSTRACT:
An improved die retaining element has a highly efficient, durable and wear and abrasion resistant flange portion surrounding an opening for securing a die mold therein. The flange portion may have practically any geometric configuration, such as round, but is most effective when in a continuous plane with the powder feed box in sliding contact with a feed box. In particular, the flange portion may selectively have either a high precision tetragonal zirconia polycrystal (TZP) ceramic or zirconia-alumina ceramic composite, depending on the surface material of the feeder box in sliding contact therewith. In one embodiment, the flange portion has tetragonal zirconia polycrystal ceramic and the feeder box has zirconia-alumina ceramic composite sliding surface. In another embodiment, flange portion has a zirconium-alumina ceramic composite sliding portion and the feeder box has a tetragonal zirconia polycrystal ceramic sliding portion.

REFERENCES:
patent: 4284124 (1981-08-01), Komatsu et al.
patent: 4975397 (1990-12-01), Dworak et al.
patent: 5002911 (1991-03-01), Matsumoto et al.

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