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(12) Patent: | (11) CA 1206722 |
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(21) Application Number: | 1206722 |
(54) English Title: | METHOD AND APPARATUS FOR PRESSURE DIECASTING |
(54) French Title: | METHODE ET DISPOSITIF DE COULEE EN MOULE SOUS PRESSION |
Status: | Term Expired - Post Grant |
(51) International Patent Classification (IPC): |
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(72) Inventors : |
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(73) Owners : | |
(71) Applicants : | |
(74) Agent: | ROBIC, ROBIC & ASSOCIES/ASSOCIATES |
(74) Associate agent: | |
(45) Issued: | 1986-07-02 |
(22) Filed Date: | 1983-08-02 |
Availability of licence: | N/A |
Dedicated to the Public: | N/A |
(25) Language of filing: | English |
Patent Cooperation Treaty (PCT): | No |
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(30) Application Priority Data: | None |
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ABSTRACT OF THE DISCLOSURE:
A pressure die-casting method and apparatus in
which the melt from a molten metal reservoir is delivered
and fills the casting die under the action of a difference
in pressures created in the molten metal reservoir and
the casting die and when the melt fills the die it is
under the action of vacuum, ambient or increased gas
pressure. The method is characterized by that after
filling the casting die with melt up to a preset level in
the unfilled cavity of the casting die or in one or several
unfilled independent cavities of the die an additional
gas pressure considerably higher than that acting already
in the casting die is created and simultaneously this
additional gas pressure is equalized by the counter acting
pressure created on the other side of the casting die.
Note: Claims are shown in the official language in which they were submitted.
Note: Descriptions are shown in the official language in which they were submitted.
Sorry, the representative drawing for patent document number 1206722 was not found.
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Description | Date |
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Inactive: Expired (old Act Patent) latest possible expiry date | 2003-08-02 |
Grant by Issuance | 1986-07-02 |
There is no abandonment history.
Note: Records showing the ownership history in alphabetical order.
Current Owners on Record |
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None |
Past Owners on Record |
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IVAN D. NIKOLOV |