Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 5078218 | Steerable drilling mole A steerable mole for making a hole in the ground has a round tubular body, a guidable drilling instrument mounted in front on this body via a ball and socket joint, a device mounted in the body in order to guide the drilling instrument in relation to the ... | 01/07/1992 |
| 5070950 | Remote controlled actuation device An actuator for an appliance associated with a ducted body, through the duct of which flows an incompressible fluid, includes a differential piston axially moveable within the duct and operatively connected to the appliance. The piston has a tubular shape... | 12/10/1991 |
| 5060736 | Steerable tool underreaming system A bottom hole assembly is described having a bit driven by a downhole motor and stabilizers located above the motor on the drill string. A subassembly is also provided for controlling the bit trajectory that is operational on demand at the rig site. The s... | 10/29/1991 |
| 5052501 | Adjustable bent housing An adjustable bent housing consisting of an inner housing telescopically received within an outer housing. A sleeve is provided having an angularly offset clutch face. Spline non-rotatably couple an interior surface of the sleeve with an exterior surface ... | 10/01/1991 |
| 5050692 | Method for directional drilling of subterranean wells A method for directional drilling of a well with a motor and drill bit. A tubular housing is secured to the lower end of the motor with the housing having a first surface with an axis angularly disposed relative to the axis of the tubular housing. A secon... | 09/24/1991 |
| 5048621 | Adjustable bent housing for controlled directional drilling An adjustable bent housing for controlled directional drilling of well holes. The bend angle of the housing can be conveniently adjusted upon release of the locking nut which is threadably mounted to the motor casing. The locking nut engages an adjusting ... | 09/17/1991 |
| 5042597 | Horizontal drilling method and apparatus A method and apparatus for drilling highly deviated wells is disclosed. A drilling assembly is attached to a drill string. The drilling assembly includes a bent sub, a pony collar attached to the bent sub, a motor with a bent housing, and a bit. Improved ... | 08/27/1991 |
| 5029654 | Bendable drilling sub A bendable sub for use in the drilling string includes an elongated tubular mandrel with a threaded top end for mounting the mandrel at the bottom end of a drilling string, a lock nut threaded onto the body of the mandrel between the ends thereof for vert... | 07/09/1991 |
| 5002138 | Steerable drilling mole Steerable mole for making a hole (31) in the ground (30), which drilling mole has a round tubular body (1), a guidable drilling instrument (2, 3) mounted in front on this body (1) by means of a ball and socket joint (4, 5) and means (7-9) mounted in the b... | 03/26/1991 |
| 4991668 | Controlled directional drilling system and method A system of apparatus for the controlled directional drilling of a deviated well bore into the earth has a fluid operated drilling motor and drill bit secured on the bottom end of a drill string. The drill bit is supported for angular drilling relative to... | 02/12/1991 |
| 4964474 | Flexible tunneling apparatus and method A flexible tunneling apparatus has an articulated thrust rod made up of a plurality of substantially identical tubular elements having complementary end surfaces, the elements being disposed in end-to-end relation and strung on a cable which is tensioned ... | 10/23/1990 |
| 4938297 | Ram boring machine A pressure-medium driven ram boring machine for boring in the earth, having an impact tip acted on by a percussion piston reciprocating in the machine housing, wherein the impact tip is arranged to be radially adjustable in the housing whereby controlled ... | 07/03/1990 |
| 4928776 | Deviation control tool A drill string deflection tool is arranged to function as a segment of drill string. An upper and a lower portion telescope together to form a mid-section with limited telescoping movement and limited angular deflection of the axes of the opposite ends. A... | 05/29/1990 |
| 4899835 | Jet bit with onboard deviation means A directional drill bit utilizing pressurized fluid as a means for eroding earth in a forward path of the bit and being used to drill at least a portion of an arcuate path, comprises an elongate hollow body having two sections joined one to the other by a... | 02/13/1990 |
| 4898498 | Thrust transmitting device A device for transmitting a thrust from one of a pair of adjacent pipes so as to propel the other comprises a pair of annular members adapted to be slidable relatively to each other along their spherical surfaces.... | 02/06/1990 |
| 4884643 | Downhole adjustable bent sub A downhole adjustable bent sub is provided for use in a drilling process in which a drill bit is subjected to a drilling force. The bent sub has a tubular housing and a tubular mandrel. The tubular housing has a bend along its length to define an upper pa... | 12/05/1989 |
| 4877092 | Near bit offset stabilizer A near bit offset stabilizer for use with a bent sub or bent motor housing is presented wherein a mechanism is provided to correctly orient and lock the stabilizer in a desired position in alignment with the bend angle in the bent sub or bent motor housin... | 10/31/1989 |
| 4836303 | Device for the remote adjustment of the relative orientation of two sections of a column The device comprises a variable-angle elbow coupling (14) interposed between the ends (12, 13) of two successive sections of a column. The coupling (14) comprises a first rectilinear tubular element (14a) and a second rectilinear tubular element (14b) con... | 06/06/1989 |
| 4836301 | Method and apparatus for directional drilling A method of directionally drilling a borehole makes use of a drilling assembly including an apparatus having an upper section with a longitudinal axis I, and a lower section having a central axis II and including at least part of a rotary drill bit, said ... | 06/06/1989 |
| 4834196 | Well drilling tool A drilling tool having a body that functions as a length of drill string and telescopes to shorten the body each time column load is applied by way of applied bit load. The telescoping action causes a cam turret in the body to change position to cause one... | 05/30/1989 |
| 4823888 | Apparatus for making a subterranean tunnel The invention provides apparatus for making a tunnel. A flexible tube connects to a head consisting of a body and a nose mounted for movement thereon. The nose has an abutment face adjustable in position relative to said body, and carries a nozzle. The no... | 04/25/1989 |
| 4817740 | Apparatus for directional drilling of subterranean wells Apparatus for effecting a change in the direction of a downhole rotary drilling tool comprises a bent housing disposed between the bottom end of a downhole motor and a tubular housing connected to the drilling tool. The bent housing is angularly adjustabl... | 04/04/1989 |
| 4813497 | Adjustable bent sub There is disclosed an adjustable bent sub for use in directional drilling in earth formations which is adapted to be placed between the power unit and bearing assembly components of a downhole motor and which can be angularly adjusted without requiring di... | 03/21/1989 |
| 4745982 | Adjustable bent sub An adjustable bent sub for use in directional drilling in earth formations comprises a first body member having a first body portion defining a first primary axis and a second body portion defining a first secondary axis disposed at a first offset angle w... | 05/24/1988 |
| 4694914 | Drilling string for drilling a bent bore, a method of using said string, and a bending device used in said string The present invention relates to drilling a well with a bent bore. A bending device is inserted in a drilling string between a stabilizer and an active motor element. If the drilling string is rotated in one direction the bending device takes up a rectili... | 09/22/1987 |
| 4641717 | Connector housing A connector housing for connecting a motor housing to a bearing housing, so that the angle between the longitudinal axis of the motor housing and the longitudinal axis of the bearing housing can be changed. The connector housing has a top housing, a cente... | 02/10/1987 |
| 4596294 | Surface control bent sub for directional drilling of petroleum wells Directional drilling apparatus for incorporation in a drill string, wherein a lower apparatus section is angularly deviated from vertical by cam action and wherein rotational displacement of the angularly deviated apparatus section is overcome by addition... | 06/24/1986 |
| 4522272 | Apparatus for directional drilling of subterranean wells An apparatus is provided for effecting a change in direction of a rotary drill bit relative to a work string. Two tubular components incorporated into the work string have a rotationally adjustable connection for angularly displacing the drill bit axis re... | 06/11/1985 |
| 4508182 | Method and apparatus for controlling azimuthal drift of a drill bit A method of and apparatus for controlling the azimuthal drift of a drill bit in an inclined well bore is described. The method comprises prestressing a drill collar member in torsion to adjust the angle in the horizontal plant that the drill bit makes wit... | 04/02/1985 |
| 4484641 | Tubulars for curved bore holes The invention provides a high strength, twist resistant tubular goods system for traversing highly deviated sections of well bores capable of conducting fluids under high pressures. The system comprises short pipe joints interconnected by unions capable o... | 11/27/1984 |
| 4446932 | Hydrostatic shear pin A method and apparatus for controlling the depth at which deviation occurs of a conductor casing driven vertically into the ocean floor from an offshore oil platform. A retractable shear pin engages both members of an articulated joint inserted between tw... | 05/08/1984 |
| 4442908 | Tool for drilling curved sections of well holes A drilling tool for deep wells having a motor-driven drill bit which can be turned at an angle to the axis of the primary well hole to produce lateral holes branching from the primary hole. The bit is rotatably-mounted in the last in a series of pivotally... | 04/17/1984 |
| 4438821 | Mining machinery The disclosure relates to a mining machine consisting of four basic parts, a cutting head, revolving sections, stationary sections, and an upper section. These parts being cylindrical in shape with mitered ends. A journalled articulated drill shaft with a spir... | 03/27/1984 |
| 4396073 | Underground boring apparatus with controlled steering capabilities An underground boring apparatus including a forwardmost boring head is disclosed herein along with a particular technique for guiding the boring head through the earth along both linear and non-linear paths. In a specific embodiment, the apparatus utilize... | 08/02/1983 |
| 4374547 | Crank connector for directional drilling An auxiliary locking device for a crank connector of the type including two tubular members interconnected by a shaft having an axis of rotation different from the axes of rotation of the two tubular members. The shaft being rotatably secured to one of th... | 02/22/1983 |
| 4286676 | Crank connector for directional drilling This connector comprises two tubular members connected to each other, one of which can pivot about a rotation axis which forms an acute angle with the axis of the two members. This axis of rotation and the axes of the two members converge to the same poin... | 09/01/1981 |
| 4258800 | Hinged conductor casing for deviated driving and method therefor A method and apparatus for deviating a conductor casing, or the like, after it has been driven into a substratum, generally beneath the floor of a body of water. The conductor casing is characterized by a drive shoe assembly on the end thereof having a be... | 03/31/1981 |
| 4220214 | Directional drilling sub A directional drilling "sub" provides a shifting end portion which allows the sub to be rotated from a first in-line axially straight orientation with the drill string to a second angled or "bent" position which second position is normally associated with... | 09/02/1980 |
| 4077657 | Adjustable bent sub This invention relates to a device for selectively setting the axial alignment of sections of pipe from axial coincidence to an obtuse angle between the pipe sections.... | 03/07/1978 |
