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Class Information
Number: 299/29
Name: Mining or in situ disintegration of hard material > Hard material disintegrating machines
Description: Apparatus comprising a cutting means and a power operated means to drive or advance said cutting means to cut, sever or break up hard material.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7396085 |
Pavement degradation tools in a ganged configuration |
Jul. 8, 2008 |
| 6612655 |
Mining system and method featuring a bread loaf shaped borehole |
Sep. 2, 2003 |
| 6325460 |
Machine used in connection with underground mining having an operator protective shield |
Dec. 4, 2001 |
| 6145933 |
Method for removing hard rock and concrete by the combination use of impact hammers and small charge blasting |
Nov. 14, 2000 |
| 5193241 |
Machine for removing slag and metal reminders from crucibles |
Mar. 16, 1993 |
| 4858347 |
Continuous excavating apparatus and methods |
Aug. 22, 1989 |
| 4668016 |
Mining machine with adjustable jib |
May. 26, 1987 |
| 4204715 |
Method and device for breaking a hard compact material |
May. 27, 1980 |
| 4076317 |
Device for guying a movable cutting machine |
Feb. 28, 1978 |
| 3969154 |
Catastrophic failure of metals |
Jul. 13, 1976 |
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