Earth boring bit with pressure compensating rigid face seal

Boring or penetrating the earth – With storage means for bit lubricant carried by bit or shaft – With fluid pressure-actuated feed means

Patent


  [ 0.00 ] – not rated yet Voters 0   Comments 0

Please leave your Comment & Rating

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.