Method of manufacturing a spring of the cylindrical type to be used at high temperature
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 2, 1989
Issued Date -
N/A
app pub date -
Aug 12, 1988
filing date -
Oct 22, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a method of manufacturing a spring (10) of the cylindrical type to be used at high temperatures. This spring (10) is made of refractory material, such as quartz, boron nitride or graphite. It is constituted by recesses (11.sub.1 to 11.sub.7) not adjoining each other, having a height h and which are distributed along a helical line. The method of manufacturing utilizes a wire saw for forming these recesses in a cylindrical tube, which is subjected to a rotation after each sawing operation. The absence of microcracks imparts a high elasticity to the spring up to high temperatures. It is used for transmitting movements at high temperatures, more particularly when conditions of perfect cleanliness are desired, as, for example, in the case of semiconductor metallurgy.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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