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Expired Canadian patentCanada

Lubrication system for a die casting machine

CA 1180534 A · Owner: Outboard Marine Corporation · Inventors: Nelson, Edward M.

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A die casting machine comprises a die cavity a sleeve communicating with the die cavity and a, piston which reciprocates within the sleeve to inject molten metal through the sleeve into the die cavity. The piston includes a stem portion having a passage which communicates with the interior of the sleeve. An air supply system is adapted to communicate with a source of pressurized air and with the stem portion passage to selectively deliver a stream of pressurized air into the sleeve through the stem portion passage. A lubricant supply system is adapted to communicate with a source of lubricant and is operatively connected with the air supply system for introducing lubricant into the air …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted January 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2002.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledAugust 4, 1981
GrantedJanuary 8, 1985
Term endedJanuary 8, 2002
Patent numberCA 1180534 A
Classification (IPC)B22D17/20

Timeline

Timeline From CIPO dates

1982198519881991199419972000Application filedAug 4, 1981Patent grantedJan 8, 1985Term endedJan 8, 2002

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.