| Patents for E21B 15 - Supports for the drilling machine, e.g. derricks or masts (4,619) |
|---|
| 05/27/1986 | US4590720 Telescoping derrick |
| 05/13/1986 | US4587778 Method and apparatus for erecting a drilling rig mast |
| 05/06/1986 | US4586572 Well drilling apparatus |
| 05/06/1986 | US4586571 Method of and arrangement for positioning of a drilling apparatus |
| 04/15/1986 | US4581862 Drilling equipment tower raising mechanism |
| 04/15/1986 | CA1203309A1 Method and apparatus for controlling the position of a hydraulic boom |
| 04/10/1986 | CN85108188A Drilling and /or lifting machine |
| 04/10/1986 | CN85108187A Pile driver, pile drawer and/or drilling machine |
| 04/01/1986 | US4578911 For land operations |
| 02/11/1986 | US4569168 Self-elevating substructure for a portable oil derrick |
| 01/28/1986 | US4566824 System for drilling from a water surface, which is insensitive to the swell |
| 01/28/1986 | CA1199944A1 Working platform for a drilling apparatus |
| 01/07/1986 | US4563109 Clamping apparatus for use on offshore platforms |
| 12/27/1985 | EP0165479A2 Drill pipe |
| 12/03/1985 | US4556008 Semi-submersible marine platform |
| 11/05/1985 | US4550804 Climbing assist apparatus having controlled descent and escape mechanism |
| 10/30/1985 | EP0159974A2 A feed beam for a rock drill |
| 10/15/1985 | US4547109 Drill pipe handling and placement apparatus |
| 10/15/1985 | CA1195241A1 Positioning of well pipe jack in a rig |
| 10/01/1985 | US4544176 Tractor mounted hydraulic control mechanism for an earth working tool |
| 10/01/1985 | US4543762 Flexible terminal point for lattice work construction |
| 10/01/1985 | CA1194367A1 Semi-submersible marine platform |
| 09/24/1985 | US4542794 Method and a means for aligning a rock drill |
| 08/27/1985 | US4537263 Method and means for adjusting the feed support of a rock drilling unit into a given distance from the drilling location |
| 08/06/1985 | CA1191506A1 Hoist pull down system for blast hole drill |
| 07/24/1985 | EP0149056A1 Movable drilling device |
| 07/17/1985 | EP0148588A1 Underground longhole drilling machine |
| 07/09/1985 | US4527640 Working platform for a drilling apparatus |
| 06/19/1985 | EP0144641A2 Service derrick for a well pump |
| 06/19/1985 | EP0144425A1 Vertical hole-boring machine |
| 05/14/1985 | US4516637 Hoisting apparatus and method for raising oil tubing |
| 05/08/1985 | EP0140873A1 Drilling arm |
| 05/07/1985 | CA1186678A1 Infinitely variable crown block positioning |
| 04/30/1985 | US4514796 Method and apparatus for controlling the position of a hydraulic boom |
| 04/02/1985 | US4508035 Explosive charging apparatus for rock drilling |
| 03/12/1985 | CA1183831A1 Drilling rig jack mechanism |
| 02/26/1985 | US4501199 Automatically controlled rock drilling apparatus |
| 02/26/1985 | CA1183007A1 Mine roof driller - bolter apparatus |
| 02/19/1985 | US4499953 Apparatus for drilling rock |
| 02/12/1985 | US4498544 Method for rock drilling |
| 01/15/1985 | CA1181063A1 Apparatus and method for arcuate path drilling |
| 01/08/1985 | US4492501 Platform positioning system |
| 12/11/1984 | CA1179322A1 Top drive well drilling apparatus |
| 12/06/1984 | WO1984004778A1 Vertical hole-boring machine |
| 12/04/1984 | US4485570 Apparatus for mounting a drilling machine on an excavator bucket |
| 11/27/1984 | US4484637 Positioning control system for rock drill support apparatus |
| 10/30/1984 | US4479537 Power tubing hanger and tubing string lifting assembly |
| 10/23/1984 | US4478291 Drilling rig |
| 10/23/1984 | US4478015 Cable sling arrangement for pivoting a drilling mast and drawworks elevator to a raised or reclined position in relation to a substructure support and method of cable sling string up |
| 10/02/1984 | US4473977 Oil well drilling system |
| 09/26/1984 | EP0119375A1 Anchoring bolt drilling and setting device, especially for mining |
| 09/25/1984 | CA1174826A1 Flexible terminal point for lattice work constructions |
| 09/18/1984 | US4471587 Dual swing-up elevator well drilling apparatus |
| 09/11/1984 | US4470739 Auxiliary workover rig |
| 08/28/1984 | CA1173358A1 Submerged buoyant offshore drilling and production tower |
| 08/14/1984 | US4465144 Drill rig mast structure |
| 07/10/1984 | US4458768 Top drive well drilling apparatus |
| 07/04/1984 | EP0112811A2 Pressurized medium actuated gripping device |
| 07/03/1984 | CA1170016A1 Drilling rig |
| 06/12/1984 | US4453603 Apparatus and method for selected path drilling |
| 05/15/1984 | US4448246 Apparatus for setting casing in an oil well |
| 05/15/1984 | US4447997 Drilling rig |
| 05/15/1984 | CA1167434A1 Method and means for adjusting the feed support of a rock drilling unit to a chosen distance from a drilling location |
| 05/15/1984 | CA1167229A2 Drill rig |
| 05/08/1984 | CA1167026A1 Method and means for aligning a rock drill |
| 05/01/1984 | US4445663 Rotating device for drill mast |
| 04/03/1984 | US4440262 Delayed deployment platform |
| 03/20/1984 | US4437524 Well drilling apparatus |
| 03/20/1984 | US4437515 Positioning of well pipe jack in a rig |
| 03/13/1984 | US4436455 Universally positionable low profile mine drilling machine and method |
| 03/06/1984 | US4434860 Hoist pull down system for blast hole drill |
| 02/07/1984 | CA1161799A1 Oil well drilling rig mover |
| 01/31/1984 | US4428125 Inclination indicating apparatus |
| 12/20/1983 | US4421179 Top drive well drilling apparatus |
| 12/20/1983 | US4421175 Method of drilling and casing a well |
| 12/20/1983 | US4420916 Method and apparatus for aligning and securing auxiliary equipment with respect to a well drilling platform |
| 12/13/1983 | US4420277 Mine roof driller-bolter apparatus and method |
| 12/06/1983 | CA1158229A1 Drill rig |
| 11/22/1983 | US4416210 Drill barge transport by surface effect vehicles |
| 11/15/1983 | CA1157007A1 Well drilling apparatus |
| 10/18/1983 | US4410049 Directional valve means for positioning machine units |
| 10/11/1983 | CA1154975A1 Offshore platform having three decks |
| 09/27/1983 | US4406098 Drilling ramp |
| 09/07/1983 | EP0087917A1 Drilling apparatus |
| 08/30/1983 | US4401398 Support structure for mudline suspension wellhead |
| 08/23/1983 | US4400141 Hydraulic pump unit |
| 08/02/1983 | US4396072 Method and apparatus for producing a drill hole |
| 07/26/1983 | US4395163 Mining appliance |
| 07/20/1983 | EP0083899A1 Electrohydraulic control device for boring tools |
| 07/19/1983 | US4393944 Drill rig |
| 07/19/1983 | US4393630 Actuation means for the racking platform of a mast |
| 07/12/1983 | US4392744 Method of and apparatus for determining angular and transversal displacements of shield machine and succeeding pipe |
| 07/06/1983 | EP0083334A1 Drilling arm |
| 06/01/1983 | EP0080455A2 Galleries driving machine |
| 05/31/1983 | CA1147438A2 Elevator load control arrangement for a computer- controlled oil drilling rig |
| 05/31/1983 | CA1147435A2 Block position and speed transducer for a computer- controlled oil drilling rig |
| 05/31/1983 | CA1147434A2 Joint sensor for a power tong |
| 05/31/1983 | CA1147432A2 Velocity control arrangement for a computer- controlled oil drilling rig |
| 05/31/1983 | CA1147431A2 Power tongs control arrangement |
| 04/12/1983 | CA1144334A1 Drilling mast arrangement |