Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Device for sealing a drift cross section driven by means of a cutting machine

Device for sealing a drift cross section driven by means of a cutting machine

US Patent 4662685 · Granted May 5, 1987

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Roof bolt drilling and setting apparatus1999
Method of controlling interlinked vehicles in mining and tunnelling as well as a1999
Dry dust removal device1997
Gear box1996
Bit holder with a detachably fixed bit bushing1996
Anchor bolt drilling and setting device1995
Low profile mining machine having a cutter mounted on a slidable carriage1994
Loading device for mining1993
Roof support for underground excavations such as coal mines1993
Drive arrangement for shearing drums1992
Device for feeding fluid for the spraying of picks in a shearing drum1992
Shearing machine with movable shearing drum and conveyor1991