Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Shock absorber assembly for absorbing shocks encountered by a drill string

Shock absorber assembly for absorbing shocks encountered by a drill string

US Patent 4387885 · Granted Jun 14, 1983

Estimated economic value: $11,193,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Hydraulic timing device2008
Drill stem connection2007
Snow grooming apparatus and system2003
Deflation resistant tire and insert apparatus1998
Well jar accelerator with expansion chamber1996
Well jar accelerator with expansion chamber1996
Improved mud motor system incorporating fluid bearings1994
Key cover1993
Circle threadform for marine riser top joint1992
Key cover1992
Releasable overshot1991
Fail-safe blowout preventer1989