Bizarre Patents
A banana protective device for storing and transporting a banana carefully.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7314053 | Load sensing system A load sensing system for maximizing the cleaning efficiency of particulate raw materials such as sand, gravel, rock, ores, etc., in a log washer by sensing the weight of the aggregate in the log washer tank and adjusting the angle of inclination of the tank for cle... | 01/01/2008 |
| 7284559 | Load sensing system A programmable microcomputer controlled load sensing system for maximizing the cleaning efficiency of particulate raw materials such as sand, gravel, rock, ores, etc. in a log washer by sensing the weight of the aggregate in the log washer tank and adjusting the ang... | 10/23/2007 |
| 7219752 | System and method for damping vibration in a drill string A system for damping vibration in a drill string can include a valve assembly having a supply of a fluid, a first member, and a second member capable of moving in relation to first member in response to vibration of the drill bit. The first and second members define... | 05/22/2007 |
| 7219747 | Providing a local response to a local condition in an oil well A method and apparatus for providing a local response to a local condition in an oil well are disclosed. A sensor is provided to detect a local condition in a drill string. A controllable element is provided to modulate energy in the drill string. A controller is co... | 05/22/2007 |
| 7182158 | Drilling device comprising a rotational drive In a drilling device with a drive unit for rotation and advance the rod assembly has a plurality of pipe sections interconnected by means of plug-type connections torque proof in both directions. A tension rod protrudes through the interior of the rod assembling. Th... | 02/27/2007 |
| 6942073 | On/off damper for bikes An activation device for a damper includes a stopping tube adapted to be securely received in the piston rod and having grooves defined in a peripheral edge of the stopping tube and first teeth formed on the peripheral edge of the stopping tube, a driving tube adapt... | 09/13/2005 |
| 6905114 | Shock absorbing and shock force generating apparatus with shear pin for an oil pump and method therefor A shock absorbing apparatus and method includes a shaft travelling north and south within a tube. The tube is positioned south of a sucker rod. The shaft has a piston head coupled at a south end thereof, which piston head is received in an area of reduced diameter w... | 06/14/2005 |
| 6817598 | Gun brake device The present invention provides a gun brake system adapted to slow the descent of a tool string in a well. In one embodiment, the brake system comprises a brake installed within the well and having a snug fitting restriction and one or more fluid channels extending a... | 11/16/2004 |
| 6691801 | Load compensator for a pipe running tool A load compensator is disclosed for use in connection with a pipe running tool. The load compensator includes an outer housing connected to the portion of the pipe running tool that holds the pipe segment. A piston is disposed within the housing, and is c... | 02/17/2004 |
| 6446946 | Polish rod spring II This invention is a shock absorber for a oil well pumping unit. When a oil well is being produced by means of a oil well pumping unit-the pumping unit sits on the ground surface and pumps in an upward and downward motion which works the sucker rod string ... | 09/10/2002 |
| 6308940 | Rotary and longitudinal shock absorber for drilling A rotary and longitudinal shock absorbing apparatus with an mandrel therein is connected to a drill string assembly to absorb abnormal longitudinal shocks and abnormal torsional shocks by cooperating hydraulic and mechanical means, while allowing communic... | 10/30/2001 |
| 5660241 | Pressure compensated weight on bit shock sub for a wellbore drilling tool A drilling tool, adapted to drill a wellbore in an earth formation, comprises a weight on bit equalizer shock sub. The weight on bit equalizer shock sub includes a precharged nitrogen chamber and additional chambers, the nitrogen in the nitrogen chamber a... | 08/26/1997 |
| 5183113 | Down-hole decelerators A down-hole decelerator for decelerating a device dropped down a borehole in a drilling mud column has an elongate casing immersible in the mud flow with its longitudinal axis along the axis of the borehole. A plunger is slidable axially within the casing... | 02/02/1993 |
| 5083623 | Hydraulic shock absorber A shock absorber apparatus for inclusion in a tool string which consists of outer and inner casings telescopically assembled with one casing having an uphole threaded joint member and the other casing having a downhole threaded joint member. The concentri... | 01/28/1992 |
| 4932471 | Downhole tool, including shock absorber In a preferred embodiment, an eletronic temperature gauge is carried into a well bore within a pressure-sealed housing which can free fall through a drill string to impact upon a drill bit connected at the bottom of the drill string. A shock absorber is c... | 06/12/1990 |
| 4901806 | Apparatus for controlled absorption of axial and torsional forces in a well string A drill string apparatus for the controlled absorption of both axial and torsional forces exhibited on the well string during drilling operations. The device is adapted to be connected in the drill string above the drilling tool in order to control the fo... | 02/20/1990 |
| 4892444 | Resilient unit A resilient unit able to accomodate a large movement comprises a stack of elastomeric bearing units arranged to be loaded in series and to deform primarily in shear. Preferably a plurality of the stacks are provided in a nested configuration and interconn... | 01/09/1990 |
| 4844180 | Downhole drilling motor A downhole drilling motor is disclosed in which an output shaft is allowed to translate in axial direction relative to the motor housing over a predetermined stroke. Fluid pressure of a drilling fluid pumped to a rotary drill bit driven by the motor may b... | 07/04/1989 |
| 4781359 | Sub assembly for a swivel A sub assembly for connecting a power swivel to a drill string. The assembly includes a telescopic sub having a preloaded spring. The telescopic sub has three discrete positions enabling it to travel in either direction from a normal position. This capabi... | 11/01/1988 |
| 4779852 | Vibration isolator and shock absorber device with conical disc springs A vibration isolator and shock absorber system which provides excellent protection to sensors against the deleterious effects of shock and vibration even under severe drilling conditions is presented. The vibration isolator and shock absorber system is en... | 10/25/1988 |
| 4679669 | Shock absorber A shock absorber for a wireline instrument, the shock absorber having solid, cylindrical upper body, a cylindrical sleeve, and a mandrel. The mandrel has a hexagonal upper portion, a circular center portion, and a lower nose portion. A bolt connects the m... | 07/14/1987 |
| 4630809 | Vibration isolator and shock absorber device A vibration isolator and shock absorber device is presented wherein elastomeric vibration isolation elements interact with reaction elements to form differential springs, i.e., springs in which the deflection and load characteristics change with load. In ... | 12/23/1986 |
| 4600062 | Shock absorbing drilling tool A well tool carried in a drill string for maintaining bottom hole contact while absorbing angular and axial shock forces of a rotating drill bit. The tool has an elongated body with pipe joint ends and includes a tubular mandrel slideably mounted within a... | 07/15/1986 |
| 4571162 | Oil well sucker rod shock absorber An oil well sucker well shock absorber having a cylindrical outer casing, a spring disposed therewithin, a plurality of apertures extending through the casing and allowing fluid communication with upwardly extending slidably disposed piston plunger rod at... | 02/18/1986 |
| 4552230 | Drill string shock absorber A telescopic shock absorber for use in a drill string includes a resilient arrangement to cushion telescopic contraction and extension of the shock absorber in response to shock loads and vibrations imparted during drilling. The shock absorber operates in... | 11/12/1985 |
| 4534683 | Reciprocating drill feed control rod holding means A holding or checking means for holding the control rod of a reciprocating drill feed control apparatus in position after each advancing movement of an automatic drilling machine during a "peck drilling" operation. The holding means includes a cylindrical... | 08/13/1985 |
| 4501219 | Tensioner apparatus with emergency limit means The invention pertains to tensioners for maintaining a load between two relatively movable structures, such as an offshore drill ship or the like and a riser pipe. First and second tensioner bodies are mounted for relative reciprocation, and are further f... | 02/26/1985 |
| 4463815 | Mechanical jarring tool Adjustable torsional type latching means (5) for triggering a mechanical well jar tool comprises torsionally actuated gear racks (20,22) including acme threads or teeth which extend axially on opposite adjacent side portions of telescopic parts (1,2). The... | 08/07/1984 |
| 4443206 | Well tool A well tool carried in a drill string for maintaining bottom hole contact while absorbing angular and axial shock forces of a rotating drill bit. The tool has an elongated body with pipe joint ends and includes a tubular mandrel rotationally and slideably... | 04/17/1984 |
| 4439167 | Shock absorber assembly A shock absorber assembly adapted to be used with a drill string dampening intermittent shocks and vibrational forces encountered with a drill string, the shock absorber assembly including a mandrel, a tubular body reciprocally mounted with respect to the... | 03/27/1984 |
| 4429743 | Well servicing system employing sonic energy transmitted down the pipe string A well servicing system in which sonic energy is transmitted down a pipe string to a down hole work area a substantial distance below the surface. The sonic energy is generated by an orbiting mass oscillator and coupled therefrom to a central stem to whic... | 02/07/1984 |
| 4402495 | Drill string shock absorber with pressurized lubricant system A shock absorbing apparatus for use in a drill string for earth boring operations has a pressurized lubrication system. The shock absorber has a tubular body and a mandrel reciprocally mounted in the body for rotation with it. The mandrel and body telesco... | 09/06/1983 |
| 4398898 | Shock sub A novel shock sub is disclosed for use in a drill string for absorbing longitudinal and impact loads. A tubular housing is provided for connection to one part of a drill string and a tubular mandrel extends into the housing for longitudinal sliding moveme... | 08/16/1983 |
| 4394884 | Shock sub For use in a string of drill pipe terminating in drill collars and a drill bit, a shock sub is disclosed which, in the illustrated and preferred embodiment, incorporates telescoping upper and lower mandrels. The upper mandrel incorporates a pin connection... | 07/26/1983 |
| 4387885 | Shock absorber assembly for absorbing shocks encountered by a drill string A shock absorber assembly for absorbing shocks encountered by a drill string wherein the shock absorber assembly is for use with a drill string having a working fluid therein and includes a body member affixed to the drill string, a mandrel mounted for re... | 06/14/1983 |
| 4331006 | Shock absorber assembly A shock absorber assembly for absorbing shocks encountered by a drill string having a working fluid flowing therethrough wherein the shock absorber assembly includes a housing affixed to the drill string, a mandrel mounted for reciprocal longitudinal move... | 05/25/1982 |
| 4261427 | Long stroke jar bumper sub with safety sleeve A hydraulic jar apparatus to be disposed in a drilling string embodying inner and outer telescopically arranged elements. Overlapping portions of the elements provide an annual chamber confining an operating liquid by an annular seal fixed to the outer el... | 04/14/1981 |
| 4257314 | Apparatus for improved motion control An improved type of hydraulic control cartridge with mounting structure and accessorial safety device for installation within both ends of reciprocative pneumatic actuators to permit a safe increase in their speed of operation. The safety device automatic... | 03/24/1981 |
| 4223746 | Shock limiting apparatus In accordance with an illustrative embodiment of the present invention, a shock limiting apparatus for mounting an instrumentality in a drill collar comprises piston and cylinder means subject to hydrostatic well fluid pressure for preventing longitudinal... | 09/23/1980 |
| 4210316 | Drill string shock absorber with improved pin type torque transmission means A shock absorbing apparatus for use in an earth boring drill string is disclosed herein. The shock absorber is of the type having a mandrel reciprocally mounted for rotation with a tubular body; a sealed chamber between the tubular body and the mandrel co... | 07/01/1980 |
