Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Roller drill bit having radial-thrust pilot bushing incorporating anti-galling material

Roller drill bit having radial-thrust pilot bushing incorporating anti-galling material

US Patent 4875532 · Granted Oct 24, 1989

Estimated economic value: $11,812,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Rotary drill bit2018
Percussion assisted rotary earth bit and method of operating the same2014
Percussion assisted rotary earth bit and method of operating the same2014
Percussion assisted rotary earth bit and method of operating the same2013
Hardfacing with coated diamond particles1998
Hardfacing with coated diamond particles1998
Ground retainer1997
Drill bit wear resistant surface for elastomeric seal1990
Wear compensating rock bit insert1988
Abradable cutter protection1983
Sealing system for a rolling cone cutter earth boring bit1981