Process and apparatus for compressing metallic powder into a...

Presses – Methods – Forcing through constricted passage

Reexamination Certificate

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C100S042000, C419S066000

Reexamination Certificate

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06845710

ABSTRACT:
A process for compressing metallic powder into a compact in a powder press which has a die-plate, a hydraulically operated upper ram and at least one hydraulically operated lower ram, wherein the lower ram is set to vibrations while the die-plate is being filled with metallic powder.

REFERENCES:
patent: 4518335 (1985-05-01), Pujari
patent: 4583966 (1986-04-01), Ocker et al.
patent: 5030075 (1991-07-01), Leinweber
patent: 5253993 (1993-10-01), Birkenstock et al.
patent: 6106264 (2000-08-01), Stenekes
patent: 6325965 (2001-12-01), Makita et al.
patent: 199 03 417 (2000-08-01), None
patent: 63132800 (1988-06-01), None
patent: 04333396 (1992-11-01), None
patent: 05295405 (1993-11-01), None
patent: 08309594 (1996-11-01), None
patent: 804165 (1981-02-01), None
“Hydraulic Powder Compacting Presses UPP” by Osterwalder AG, Industriering 4, CH3250 Lyss.
“Mikroprozessor gesteuertes hydraulisches Pressen in der Pulvermetallurgie aus Werkstatt und Betrieb” of 1986.

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