Method for making foundry moulds and cores

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United States of America Patent

PATENT NO 4326578
SERIAL NO

06122262

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A method for making foundry moulds and cores where after preparation of the moulds and cores having a sand composition of a low strength up to 0.03 MPa, a cooling medium is introduced into the mould cavity, preferably liquid nitrogen, in an amount to provide hardening of only the surface layer of a required sufficient to reproduce the shape of the mould cavity.

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Patent Owner(s)

Patent OwnerAddress
INSTYTUT ODLEWNICTWAKRAKOW

International Classification(s)

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  • 1980 Application Filing Year
  • B22C Class
  • 44 Applications Filed
  • 2 Patents Issued To-Date
  • 4.55 % Issued To-Date
Click to zoom InYear of Issuance% of Matters IssuedCumulative IssuancesYearly Issuances1980198119821983198419850255075100

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Holtzer, Mariusz Crakow, PL 3 1
Jachowicz, Adam Crakow, PL 1 0
Marzencki, Andrzej Crakow, PL 1 0
Mazur, deceased Antoni late of Niepolomice, PL 1 0
Olszowski, Tadeusz Crakow, PL 1 0
Pajak, Andrzej Crakow, PL 1 0

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  • B22C Class
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