Class E21C : MINING OR QUARRYING
Subclass 25/06: Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11725512 | Method for removing material from a rock wall | May 16, 22 | Aug 15, 23 | Joy Global Underground Mining LLC |
| 11499426 | Cutting device with tapered cutting element | Oct 16, 20 | Nov 15, 22 | Joy Global Underground Mining LLC |
| 11434761 | Impact feedback system for longwall shearer operator | Feb 19, 20 | Sep 06, 22 | Joy Global Underground Mining LLC |
| 11391149 | Mining machine with articulating boom and independent material handling system | Dec 18, 20 | Jul 19, 22 | Joy Global Underground Mining LLC |
| 11371346 | Cutter head for mining machine | Nov 08, 19 | Jun 28, 22 | Joy Global Underground Mining LLC |
| 11339657 | Cutter head for mining machine | Nov 08, 19 | May 24, 22 | Joy Global Underground Mining LLC |
| 11319809 | Impact sensor and control system for a longwall shearer | Feb 19, 20 | May 03, 22 | Joy Global Underground Mining Inc |
| 11021953 | Material-removal systems, cutting tools therefor, and related methods | Jul 31, 19 | Jun 01, 21 | APERGY BMCS ACQUISITION CORPORATION |
| 10989050 | Cutting head having segmented cutting disc | Mar 16, 20 | Apr 27, 21 | Joy Global Underground Mining LLC |
| 10876400 | Mining machine with articulating boom and independent material handling system | Aug 18, 17 | Dec 29, 20 | Joy Global Underground Mining LLC |
| 10876399 | Mining machine with multiple cutter heads | Sep 16, 19 | Dec 29, 20 | Joy Global Underground Mining LLC |
| 10844713 | Shearing system for longwall mining | Jul 23, 19 | Nov 24, 20 | CATERPILLAR GLOBAL MINING EUROPE GMBH |
| 10808531 | Cutting device with tapered cutting element | May 26, 17 | Oct 20, 20 | Joy Global Underground Mining LLC |
| 10746020 | Vertical lifting type drum coal-mining machine without rocker arm | Aug 08, 18 | Aug 18, 20 | Not available |
| 10738611 | Systems and methods for monitoring extraction height and volume of material extracted for a mining machine | Dec 28, 18 | Aug 11, 20 | Joy Global Underground Mining LLC |
| 10738608 | Cutting device and support for same | Aug 18, 17 | Aug 11, 20 | Joy Global Underground Mining LLC |
| 10704213 | Method for controlling a height adjustment of a stripping plate of a ground milling machine, and ground milling machine | Nov 23, 18 | Jul 07, 20 | BOMAG GmbH |
| 10683751 | Cutting apparatus | Oct 02, 15 | Jun 16, 20 | Sandvik Intellectual Property AB |
| 10655468 | Horizon monitoring for longwall system | Jun 28, 19 | May 19, 20 | Joy Global Underground Mining LLC |
| 10626723 | Cutting head having segmented cutting disc | May 26, 17 | Apr 21, 20 | Joy Global Underground Mining LLC |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0191,624 | Bolter Miner and Tunneling System | May 27, 22 | Jun 13, 24 | Not available |
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