Corrosion-resistant thread joint for percussion drill element and method of achieving such resistance
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 28, 2002
Grant Date -
Oct 18, 2001
app pub date -
Mar 2, 2001
filing date -
Mar 2, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A percussive drilling component includes a cylindrical male screw thread formed of a steel material. The thread includes thread crests and thread roots interconnected by thread flanks. To protect the thread against corrosion, the thread is coated with a material having a lower electrode potential than the steel material. The coating is situated at least in regions located radially inwardly of the thread flanks. The male screw thread can be attached to a female screw thread of another percussive drilling component, the female screw thread also being coated with the material.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
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