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Class Information
Number: 299/58
Name: Mining or in situ disintegration of hard material > Hard material disintegrating machines > Rotary cutter head with advance direction coincident or parallel to rotary axis > Machine follows cutter into opening formed thereby
Description: Apparatus in which the entire machine follows the cutting means into the opening being formed by the cutting means as the cutting progresses.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7651170 |
Bore head for microbore operation |
Jan. 26, 2010 |
| 7510025 |
Boring machine |
Mar. 31, 2009 |
| 7255406 |
Method for manufacturing track for auger boring machine |
Aug. 14, 2007 |
| 6698844 |
Earth discharging device for upward-facing shield machine |
Mar. 2, 2004 |
| 6082930 |
Shield driving machine |
Jul. 4, 2000 |
| 5934761 |
Boring machine having hydrostatic bearings |
Aug. 10, 1999 |
| 5443305 |
Tunnelling machine |
Aug. 22, 1995 |
| 5190353 |
Rock cutting tool having eccentric drive |
Mar. 2, 1993 |
| 5123708 |
Shield tunnelling machine |
Jun. 23, 1992 |
| 5022789 |
Method and machine for constructing shafts |
Jun. 11, 1991 |
| 4915543 |
Existing pipeline renewing method and apparatus therefor |
Apr. 10, 1990 |
| 4848963 |
Earth pressure shield |
Jul. 18, 1989 |
| 4818026 |
Shield type tunneling apparatus |
Apr. 4, 1989 |
| 4692062 |
Shield type tunneling machine |
Sep. 8, 1987 |
| 4571122 |
Pipe laying apparatus |
Feb. 18, 1986 |
| 4494799 |
Tunnel boring machine |
Jan. 22, 1985 |
| 4494617 |
Shaft boring machine |
Jan. 22, 1985 |
| 4480872 |
Modified strip mining apparatus |
Nov. 6, 1984 |
| 4456305 |
Shield tunneling machine |
Jun. 26, 1984 |
| RE31511 |
Rotary cutterhead for an earth boring machine |
Jan. 31, 1984 |
| 4298230 |
Tunnelling apparatus |
Nov. 3, 1981 |
| 4193637 |
Rotary cutterhead for an earth boring machine |
Mar. 18, 1980 |
| 4192556 |
Tunnel boring machines |
Mar. 11, 1980 |
| 4021075 |
Excavators |
May. 3, 1977 |
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