Method of manufacturing multiple-piece graphite crucible
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 19, 1999
Grant Date -
N/A
app pub date -
Jun 18, 1998
filing date -
Jun 18, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of manufacturing split crucible pieces of a multiple-piece crucible comprising an integral assembly of two or more split crucible pieces and having a spherical bottom inner surface. The split crucible pieces are manufactured from a work mass graphite material by mechanical processing, comprising a step of forming a blind annular groove coaxial with the work by cutting the work from an end thereof toward the other end, a step of axially splitting the work into two or more pieces, constituting eventual split crucible pieces, and a step of cutting each split crucible piece from the side thereof opposite the sector-like or polygonal profile surface side by using a spherical acutting means, thereby forming a spherical inner bottom surface.
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