| Patents for E21D 9 - Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries (7,097) |
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| 02/05/1991 | US4990027 Small diameter |
| 01/30/1991 | EP0410353A1 Shield tunnelling machine |
| 01/30/1991 | EP0410304A2 Device for injecting a suspension |
| 01/30/1991 | CN1048909A Direction correcting device for shield tunnelling machine |
| 01/24/1991 | DE3923810A1 Method for changing tail seal of a shield cutter - uses auxiliary segment with surrounding sealer to effect change |
| 01/23/1991 | EP0409092A1 Direction correcting device for shield tunnelling machine |
| 01/13/1991 | WO1991000974A1 Pipe connection for advance working pipes laid underground by an advance working technique |
| 01/10/1991 | WO1991000497A1 Device for measuring position of underground excavator |
| 01/08/1991 | US4984289 Apparatus for controlling underground excavator |
| 01/08/1991 | US4983071 Pipe bursting and replacement apparatus and method |
| 01/02/1991 | EP0406195A1 Tunnel boring machine |
| 01/02/1991 | CA1278496C Process for controlling the movement of an universally swivellable cutting arm of a partial cut cutting machine as well as apparatus for performing this process |
| 12/31/1990 | CA2020042A1 Tunnel boring machine |
| 12/25/1990 | US4979848 Drilling device |
| 12/19/1990 | EP0402576A1 Shield machine for use in a shield tunneling method for constructing a small diameter tunnel |
| 12/13/1990 | DE4018407A1 Breaking out and developing roadway in tunnels - by using groups of cutting heads supported on vertical props and filled with self hardening material |
| 12/10/1990 | WO1990015222A1 Device for opening and supporting a headway |
| 12/10/1990 | CA2059296A1 Device for opening and supporting a headway |
| 12/09/1990 | WO1990015347A1 Method and device for locating branches in drains |
| 12/09/1990 | CA2033977A1 Method and device for locating branches in drains |
| 12/05/1990 | CN1047550A Rock drilling method and apparatus |
| 12/04/1990 | US4974689 Drill hole filling method and apparatus |
| 11/27/1990 | CA1276948C Tunneling machine rotatable member |
| 11/22/1990 | EP0398838A1 Injection tube with anchor effect |
| 11/22/1990 | EP0397871A1 Shield-type tunnelling machine |
| 11/15/1990 | WO1990013733A1 Earth pressure system shield process |
| 11/14/1990 | EP0397627A1 Tunnel boring machine |
| 11/14/1990 | EP0396742A1 Seal structure for main bearing of tunneling machine |
| 11/08/1990 | DE3914564A1 Sectional driving machine in shield - has swinging arm with cutting head designed to cut sloping face |
| 11/07/1990 | CN1046794A Intermediate pipe-jacking apparatus |
| 10/31/1990 | EP0394823A1 Intermediate pipe-jacking apparatus |
| 10/31/1990 | EP0394806A1 Method and apparatus for tunnelling |
| 10/30/1990 | US4966494 Low load pipe for pipe jacking |
| 10/30/1990 | US4966417 Device for guying a drift advancing machine within a drift |
| 10/24/1990 | EP0393197A1 Method of building underground cavern and tunnelling machine |
| 10/24/1990 | EP0393187A1 Method and apparatus for connecting halves of shield tunnel under ground |
| 10/23/1990 | US4965292 Forming polyurethane plastics; polysiloxane added as antifoam agent |
| 10/17/1990 | EP0392237A2 Self-propelled boring ram |
| 10/11/1990 | DE3911378A1 Driving shield, in particular for use as a cutting shoe in pipe-jacking operation |
| 10/11/1990 | DE3911308A1 Loading shovel of a heading machine |
| 09/26/1990 | EP0389450A1 Plant for digging and shoring up the walls of tunnels during excavation |
| 09/13/1990 | DE3907678A1 Apparatus for driving cross-cuts in tunnelling or roadway driving |
| 09/12/1990 | WO1990010780A1 Aqueous resin preparations for consolidating rock and filling cavities and process therefor |
| 09/05/1990 | EP0385883A1 Method for supporting a mining wall by means of mud injection, tool and injection shield therefor |
| 09/05/1990 | EP0385233A2 Process to excavate the inverted lower arch in existing tunnels and apparatus to carry out the process |
| 09/04/1990 | US4953916 Drive arrangement for driving cutting rolls |
| 08/29/1990 | EP0384065A1 Method of shield tunneling with optional section and machine therefor |
| 08/23/1990 | WO1990009509A1 Deformed shield driving method and excavator therefor |
| 08/23/1990 | WO1990009279A1 Double chamber cartridge for consolidating rock or coal |
| 08/21/1990 | US4950106 Method and apparatus for installation of an underground seal beneath a garbage dump |
| 08/09/1990 | WO1990007629A3 Device for sinking galleries or the like in underground mining or the like |
| 08/08/1990 | EP0273104B1 Joint pack ring |
| 08/01/1990 | EP0380469A2 Tool carrier for the excavation tools of winning or driving machines |
| 07/26/1990 | DE3902127A1 Wagon drill with laser-orientated control |
| 07/18/1990 | CN1008827B Earthguard cover |
| 07/12/1990 | WO1990007629A2 Device for sinking galleries or the like in underground mining or the like |
| 07/12/1990 | DE3900453A1 Drill head of a horizontal heading machine |
| 07/10/1990 | US4940288 Earth engaging cutter bit |
| 07/05/1990 | DE3916767A1 Vorrichtung zum senken von strecken od. dgl. in untertaegigen grubenbetrieben od. dgl. Apparatus for reducing stretch of od. Like. Untertaegigen in mine operated od. Like. |
| 07/05/1990 | DE3909860C1 Working frame for grouting pumps used in underground operation |
| 07/05/1990 | DE3843660A1 Equipment for machines for the maintenance and reconstruction of working spaces |
| 07/04/1990 | EP0375837A2 Control system for synchronous rotation of cutter heads, for use in shield machine |
| 07/03/1990 | US4939431 Control system for synchronous rotation of cutter heads, for use in shield machine |
| 06/27/1990 | EP0375642A1 Tunnel boring machine |
| 06/26/1990 | US4936709 Method and apparatus for laying pipes in the ground with advance of propulsion shafts installed with pipe-supporting attachments |
| 06/23/1990 | CA2005870A1 Tunnel boring machine |
| 06/19/1990 | US4934874 For clearing sludge from the galleries of underground mines |
| 06/07/1990 | DE3840479A1 Slewing mechanism for selective-cut heading machines and the like |
| 06/05/1990 | CA1269945A1 Crawler mounted conveying train |
| 05/31/1990 | WO1990005835A1 Shield-type tunnelling machine |
| 05/29/1990 | US4929123 Method for building large span tunnels by means of a cellular arch |
| 05/29/1990 | US4928866 Pipe burster |
| 05/23/1990 | EP0369030A1 Articulated shield excavator |
| 05/23/1990 | EP0368887A1 Selectively phased water supply of a cutter head. |
| 05/23/1990 | DE3838883A1 Double-pivoted re-ripping stage |
| 05/23/1990 | DE3838221A1 Method of controlling heading machines and apparatus for carrying out the method |
| 05/16/1990 | EP0368838A1 Device for the consolidation of geological formations having no or only little stability |
| 05/03/1990 | DE3837161A1 Advancement pipe for advancing from vertical shafts |
| 05/03/1990 | CA2002143A1 Process and apparatus for the protection of non-stable or moderately stable, cohesionless to slightly cohesive geologic formations |
| 05/01/1990 | US4921309 Mining machine adapted for attachment of continuous miner cutter boom assembly |
| 04/24/1990 | US4919252 Chain conveyor for miner |
| 04/19/1990 | DE3835459A1 Apparatus for reaming a tunnel profile, in particular of traffic tunnels |
| 04/18/1990 | CN1007636B Shield tunneling machine |
| 04/18/1990 | CN1007634B Driving arrangement for cutting heads or rolls of advancing or mining machine |
| 04/10/1990 | US4915541 Method and apparatus for continuously boring and lining tunnels and other like structures |
| 04/10/1990 | US4915453 Floating shoe tunnel boring machine and boring process |
| 04/10/1990 | CA1267707A1 Above-ground arrangement for and method of locating a discrete inground boring device |
| 04/04/1990 | EP0361115A1 Driving shield with a crusher installation formed as a jaw crusher |
| 04/04/1990 | CN1007441B Process and applying apparatus for movement control of universal turning arm of partial cutting type excavator |
| 04/03/1990 | US4913587 Form assembly for making covering wall of tunnel made by shield type excavator |
| 03/28/1990 | EP0359944A2 Driving shield |
| 03/28/1990 | CN1040849A Method for boring hole in ground and apparatus therefor |
| 03/28/1990 | CN1040848A Scraping mechanism by moving operation for excavating engineering, particularly to bucket loading machine |
| 03/28/1990 | CN1040846A Cutter bit and tip |
| 03/27/1990 | US4911578 Process for making a tunnel and advancing a tunneling read with a wall-supporting shield |
| 03/27/1990 | US4911504 Cutter bit and tip |
| 03/21/1990 | EP0324778A4 Boring apparatus. |
| 03/20/1990 | US4909668 Movable sealing assembly for tunneling machines |
| 03/15/1990 | DE3928413A1 Road marking with inset materials - is protected from damage and has prolonged life |
| 03/08/1990 | WO1990002246A1 Method and apparatus for connecting halves of shield tunnel under ground |