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An automatic bed maker which uses the expansion of inflatable bladder to straighten, align, and tuck-in bed-cover assembly.
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| Number | Title | Issue Date |
| 8172009 | Expandable tool with at least one blade that locks in place through a wedging effect In one aspect of the present invention, an expandable tool for an earth boring system comprises a mandrel with a sleeve positioned around the outer surface and a blade disposed in a slot formed in the sleeve. The sleeve is also configured to slide along the tubular ... | 05/08/2012 |
| 8122978 | Drilling device with undercutting The invention is a drilling device for providing a conically shaped cavity in materials primarily used for anchoring systems. The drilling device is comprised of a solid shank for attachment to a drill, a reverse thread section, and a cutting head. The cutting head ... | 02/28/2012 |
| 7997356 | Apparatus for rotary mining In various embodiments, a mining device can include a first housing portion and a second housing portion where relative movement between the first and second housing portions can extend and/or retract a cutting member with respect to the mining device. The mining de... | 08/16/2011 |
| 7770670 | Apparatus for rotary mining In various embodiments, a mining device can include a first housing portion and a second housing portion where relative movement between the first and second housing portions can extend and/or retract a cutting member with respect to the mining device. The mining de... | 08/10/2010 |
| 7353889 | Rotary driven pipe-bursting tool An apparatus for bursting pipe is preferably adapted to receive rotational energy from the inner member of a dual-member drill string. In a preferred embodiment, a plurality of pipe-bursting members, driven by the interconnected inner members, cut or burst a subterr... | 04/08/2008 |
| 7350596 | Methods and apparatus for expanding the diameter of a borehole A borehole reamer which may be deployed to a desired depth in an existing uncased borehole or below existing casing and used to substantially expand the diameter of the borehole. The diameter may be expanded by an amount that ranges from a fraction to a multiple of ... | 04/01/2008 |
| 7191835 | Disengagable burr mill A downhole tool for use in the removal of burrs or other unwanted material from an inner surface of a pipeline, well casing or other tubular. The tool has a plurality of milling elements, which may be biased against the surface or retracted from the surface to disen... | 03/20/2007 |
| 7188690 | Drilling device and method for producing undercut holes A drilling device for producing undercut holes. The drilling device includes a drilling tool having an axis of rotation and a cutting portion arranged such that the cutting portion drills a hole with a longitudinal axis that is radially offset with respect to said a... | 03/13/2007 |
| 7143847 | Drilling apparatus Drilling apparatus, such as an underreamer (20) comprises a generally cylindrical tubular body (22) and two cutting blades (26, 27) pivotally mounted to the body and movable between a retracted position and an extended position. Each cutting bla... | 12/05/2006 |
| 7048074 | Control system for a percussion drive The invention relates to a control system for a percussion drive of an earth drilling unit having a housing, a drilling tool, a pulling or thrusting drive, a percussion piston, a pressure chamber belonging to the percussion piston and a pressure medium feed, which c... | 05/23/2006 |
| 6973978 | Drilling tool having an expandable bladder and method for using same A drilling tool having an expandable bladder and a method for using the same are provided. The drilling tool includes a tool body having an interior cavity, a plurality of extendable arms coupled with the tool body, and an expandable bladder at least partially dispo... | 12/13/2005 |
| 6929076 | Bore hole underreamer having extendible cutting arms A bore hole underreamer is provided having a hollow body with a longitudinal axis, which has an external wall, at least two cylindrical bores provided through the external wall and whose axes are transverse to the longitudinal axis. Each of the bores have a cylindri... | 08/16/2005 |
| 6926099 | Drill out bi-center bit and method for using same A drill out bi-center bit and a method for using the same are provided that offer the ability to drill out cement and casing shoes, and increased stability. The bi-center bit includes a bit body having a first end operable to be coupled with a drill string, a second... | 08/09/2005 |
| 6851491 | Internal pressure indicator and locking mechanism for a downhole tool The present invention generally relates to downhole tools. More particularly, the invention relates to a locking mechanism for use on a downhole tool. A flow actuated locking mechanism is provided for a downhole tool that includes an annular, two-position sleeve hav... | 02/08/2005 |
| 6722452 | Pantograph underreamer An underreamer for forming a cavity within a well bore includes a housing adapted to be rotatably disposed within the well bore and a piston slidably coupled to the housing. The underreamer also includes a first cutter having a first end and a second end. The first ... | 04/20/2004 |
| 6668949 | Underreamer and method of use An underreamer (5) is formed from a tubular body (10) having a longitudinal bore therethrough, and providing an integral piston actuator (20) responsive to hydraulic pressure to move cutters (40) into engagement with the well bore and springs (60) to resi... | 12/30/2003 |
| 6655474 | Drill for making wide diameter and high depth holes and method for carrying out said holes A drill for drilling wide diameter and high depth holes in the soil including a base machine (1) having a rotary (2) that is equipped with a clamp (9) and, by means of translation cylinders (8), rotates and axially moves a series of drill stem (7) having ... | 12/02/2003 |
| 6615933 | Downhole tool with extendable members A downhole tool (10) for mounting on a drill string comprises: a mandrel (16); a body (18) axially movably mounted on the mandrel; and radially extendable members, such as stabiliser blades or cutters (30), mounted in the body and being operatively associ... | 09/09/2003 |
| 6591922 | Pantograph underreamer and method for forming a well bore cavity An underreamer for forming a cavity within a well bore may include a housing rotatably disposed within the well bore. The underreamer may also include an actuation rod slidably positioned in the housing. The underreamer may further include a plurality of ... | 07/15/2003 |
| 6189631 | Drilling tool with extendable elements A tool for expanding a hole size while drilling tool is disclosed. The tool utilizes a mechanically actuated mandrel and extendable cutting lugs designed in a configuration with fewer moving parts than previous designs. The cutting lugs have multiple cutt... | 02/20/2001 |
| 5103921 | Coring assembly for mounting on the end of a drill string There is provided a new and useful coring assembly for mounting on the end of a drill string and comprising a core barrel; abrading means on at least a part of the core barrel; a reaming collar mounted about a lower section of the core barrel and selectab... | 04/14/1992 |
| 5090480 | Underreamer with simultaneously expandable cutter blades and method An underreamer tool has a body with upper and lower portions having an upper cutter blade slot extending transversely through the upper portion and a lower cutter blade slot extending transversely through the lower portion at a right angle thereto. The up... | 02/25/1992 |
| 5009274 | Laterally adjustable drilling tool A drilling tool is followed by a casing tube (11) down the drilled hole. The mouth of the casing tube (11) centers rotatably a guide member (10) which receives rotation and impact energy via the interior of the casing tube (11). A drill bit (20) consists ... | 04/23/1991 |
| 4842082 | Variable outside diameter tool for use in pikewells An apparatus for use in energy exploration is disclosed which is used where a radially expanding device is required, for example in a stabilizer, retriever or an underreamer. The apparatus comprises a support tubular member for connection to a drilling st... | 06/27/1989 |
| 4635737 | Undercutting drill This disclosure relates to a drill for forming an undercut cavity in a hole in concrete, for an anchor bolt. The drill has forward and rearward ends, and comprises a body having an axially extending bore forming a generally cylindrical wall, the bore bein... | 01/13/1987 |
| 4629011 | Method and apparatus for taking core samples from a subterranean well side wall Apparatus for extracting core samples from the side walls of a subterranean well bore comprises an axial force generating tool insertable into the well with such tool carrying a stationary support rod and the movable element of such tool producing a movem... | 12/16/1986 |
| 4497382 | Retractable core drill bit Retractable core drill bit having a hollow cylindrical body at its lower end to which a monolith core drill bit is screwed. A stop sleeve is provided on the upper end of the hollow cylindrical body, and cutting components are pivotally mounted in the midd... | 02/05/1985 |
| 4407376 | Under-reaming pile bore excavator An under-reaming pile bore excavator by which a straight pile bore is first excavated vertically to a given depth by rotating the main drill bits and the under-reamed bore is next excavated downward and outward into a given shape by rotating the slidable ... | 10/04/1983 |
| 4278137 | Apparatus for extracting minerals through a borehole An apparatus consisting of pipe sections pivotally joined which can be insert in a borehole when in straight position and manipulated to a zigzag position to loosen minerals outside the wall of the borehole.... | 07/14/1981 |
| 4083405 | Well drilling method and apparatus therefor The method and apparatus for drilling a well bore and setting a liner therein in which the drill string with a bit and underreamers thereon also includes a liner supported thereon which has a gripping assembly with two sets of gripping elements and a pair... | 04/11/1978 |
