Sealing device for molten metal valve pin
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 25, 1998
Grant Date -
N/A
app pub date -
Mar 29, 1996
filing date -
Mar 29, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A sealing arrangement for the molten metal portion of a lost core molding assembly includes a cooling chamber placed adjacent an opening of a heated nozzle chamber. The cooling chamber includes a generally cylindrical passageway that is aligned with the opening in the heated chamber distant from a tip of the nozzle. The generally cylindrical passage includes a reservoir, of a preselected axial length, for collecting a portion of the molten material that is allowed to enter into the passage. The collected material is cooled and solidified within the reservoir in order to form a generally annular bushing around a moving member that moves through the passage and the opening in the heated chamber while still permitting the moving member to move in a controlled manner. The annular bushing that is formed is self-repairing as additional molten material contacts the bushing and solidifies as part of the bushing.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully