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| Number | Title | Issue Date |
| RE39209 | Production fluid control device and method for oil and/or gas wells A device and method for selectively controlling the flow of production fluid through a tubing string in an oil and gas well according to which a housing is connected to a tubing string for insertion into the well, and well fluid is passed from the ground surface int... | 08/01/2006 |
| 5417617 | Noise-suppressed pulley A noise-suppressed timing belt pulley and a method of making the same is disclosed. The pulley has a toothed face for engaging a toothed timing belt and a pair of flanges for guiding the belt. Air holes are formed in the flanges in positions aligned with ... | 05/23/1995 |
| 5411351 | Conforming a microporous sheet to a solid surface Conformable marking sheet comprising a microporous thermoplastic polymer base sheet having a network of interconnected pores. The marking sheet has a low yield stress, making it conformable to rough surfaces. The pores of the base sheet can be filled with... | 05/02/1995 |
| 5401216 | Belt tightening device A belt tightening device, wherein a basic end of a first belt located at one lengthwise side of the belt tightening device is fixed to a windup shaft driven by operating an operating lever, a wind-in member and a fixed rod are provided at the other length... | 03/28/1995 |
| 5392870 | Mineral cutter tooling system The invention provides a liner sleeve (8) adapted, in use, to be interposed between the external periphery of a round shank (3) of a point attack, mineral cutter pick (1), and the internal periphery of a circular, shank-receiving bore (5) of a pick box (6... | 02/28/1995 |
| 5362281 | Toothed power transmission belt with fabric reinforcement A toothed belt with a plurality of teeth along one surface of the belt which surface includes a peripheral wear-resistant fabric that is double woven with two sets of warp yarns and two sets of weft yarns that are tied together in a single layer.... | 11/08/1994 |
| 5351764 | Method and apparatus for enlarging an underground path A method and apparatus for enlarging an inverted arcuate underground path between two surface locations is disclosed, where the cuttings from the enlarging are removed. After the drilling of a pilot borehole, and possibly after some reaming operations, a ... | 10/04/1994 |
| 5348515 | Sprocket wear indicator A wear indicator for a sprocket adapted to have an endless track arranged in driving association therewith. The sprocket has opposite side surfaces and a series of sprocket teeth disposed peripherally about the sprocket. Each sprocket tooth has a tip with... | 09/20/1994 |
| 5346438 | Belt guide pulley There is provided a clam shell shaped belt guide pulley having first and second curved halves which are hinged together. Each pulley half has curved inner and outer surfaces. The pulley is adapted to be placed on a large diameter shaft without the need to... | 09/13/1994 |
| 5343943 | Portable oil-drilling waste recovery system Waste fluid containment and recovery apparatus for installation in-line with a piping system between a pair of horizontal interfacing flanges thereof. There is a pan having a bottom and surrounding sidewalls, the bottom having a bore therethrough. A flang... | 09/06/1994 |
| 5342249 | Belt tensioning system and method of making A belt tensioning system, a belt tensioner therefor and methods of making the same are provided, the belt tensioning system comprising a tensioner arm pivotally mounted to a support, and a wound coiled spring having opposed ends one of which is operativel... | 08/30/1994 |
| 5341888 | Drilling tool intended to widen a well The drilling tool (1) intended to widen a drilling well bears a series of helical arms (3) resting at a first end on a first fixed flange (4) so as to be able to turn on themselves by a portion of a turn under the control of a rotating ring (9) driven by ... | 08/30/1994 |
| 5342247 | Transmission unit for motor vehicles Transmission unit consisting of a continuously variable transmission (1); a hydraulic cylinder/piston unit (3) to set the transmission ratio of the continuously variable transmission (2); a pressure compensation chamber (4) working in conjunction with the... | 08/30/1994 |
| 5338265 | Emergency drive belt apparatus A new and improved emergency drive belt apparatus includes a flexible belt member, a first connector assembly attached to the first end of the belt member, a second connector assembly attached to the second end of the belt member, and a locking member cap... | 08/16/1994 |
| 5337822 | Well fluid sampling tool A well fluid sampling tool and method for retrieving single-phase hydrocarbon samples from deep wells. The sampling tool is lowered to the required depth, an internal sample chamber is opened to admit well fluid at a controlled rate, and the sample chambe... | 08/16/1994 |
| 5338130 | Extruded thermoplastic elastomer expansion joint An expansion joint retainer is used in fastening a flexible elastomeric seal or strip seal to a structural slab. The retainer has a main body made from a first material. The main body has a thickness selected to permit emplacement of the retainer on the e... | 08/16/1994 |
| 5334111 | Single pin rocker joint CVT chain A rocker joint for a power transmission chain is formed from a single pin and an associated link aperture. The pin has a substantially flat front surface and a convex back surface, with the back surface being defined by a plurality of radii. The pin is re... | 08/02/1994 |
| 5334102 | Control system for continuously variable transmission A control system for a belt-type continuously variable transmission of a motor vehicle, having a primary and a secondary control valve for varying the transmission ratio. The primary control valve receives an electric signal from a control unit to vary a ... | 08/02/1994 |
| 5328415 | Autotensioner An autotensioner having a fixed shaft, a pulley support pivotally supported on the fixed shaft, a pulley rotatably supported on the pulley support and a spring for biasing the pulley support in such a direction as to apply tension to a belt. The pulley su... | 07/12/1994 |
| 5328416 | Synchronous drive belt A synchronous drive belt for use in low speed and high torque applications has a zero pressure angle over a relatively greater portion of the fore and aft flank surfaces of the belt teeth. A pulley is also described which is particularly suitable for use ... | 07/12/1994 |
| 5323865 | Earth-boring bit with an advantageous insert cutting structure An earth-boring bit is provided with three cutters, at least one of the three cutters are provided with a heel cutting structure defined by a plurality of heel inserts having crests thereon, the heel inserts being disposed in at least one substantially ci... | 06/28/1994 |
| 5324237 | Belt drive for electrical machines A belt drive of an electrical machine has a belt pulley arranged on a driving end of a machine shaft, a coupling connecting the drive pulley with the machine shaft, the coupling having at least one elastic coupling part provided between a driving side and... | 06/28/1994 |
| 5322480 | Dragchain substitute A dragchain substitute in the form of a line guiding assembly comprising at least one line receiving channel for receiving at least one line loosely disposed therein. At least one of the channel walls of each line receiving channel is designed in projecti... | 06/21/1994 |
| 5320584 | Endless belt and a link construction therefor A readily adjustable belt and a link construction wherein a plurality of links of similar construction are detachably connected in end to end relationship to define an endless torque transmitting belt. Each link is formed of an injection molded plastic pa... | 06/14/1994 |
| 5320175 | Subsea wellhead connections A diverless and guidelineless method to connect two subsea flowlines by a jumper assembly is provided. Pivotable stabs and fluid connection means are provided on each end of the jumper assembly. The stabs mate into receptacles located on the subsea flowli... | 06/14/1994 |
| 5320583 | Protector for front chain sprocket of a bicycle This invention is directed to a protector for a single or front chain sprocket of a bicycle. The sprocket assembly is mounted on a pedal shaft and is non-rotatably coupled with a sprocket-side pedal. The protector comprises a disc which is adapted to be f... | 06/14/1994 |
| 5318482 | Chain guide having improved arm-shoe attachment feature A chain guide for automobile camshaft drive chains and the like comprises a lever arm having a mounting hole for receiving a pivot shaft, and a synthetic resin chain-engaging shoe having a pair of tongues, which embrace the arm on both sides, and which ha... | 06/07/1994 |
| 5318132 | Retrievable whipstock/packer assembly and method of use Whipstock/packer assembly equipment and procedures to retrieve and reuse a whipstock assembly during drilling operations for horizontal drainhole application. The anchor is seated in a retrievable packer and has a bore communication with the fluid path in... | 06/07/1994 |
| 5318485 | Chain-belt A power transmission (10) chain-belt (32) is disclosed that is especially adaptable for connecting the pulleys or sheaves (12, 14) of a pulley transmission (10). The chain-belt (32) has a plurality of interleaved sets (34) of transversely arranged links (... | 06/07/1994 |
| 5318129 | Method and device for setting up sondes against the wall of a cased well Sondes provided with magnets are used in wells fitted with a metallic casing. The sondes are pressed at the surface against the inner wall of the casing and taken down towards the bottom by means of a stiff driving element such as a tubing provided with t... | 06/07/1994 |
| 5316090 | Attitude control device and drilling-direction control device An attitude control device has a plurality of harmonic drive mechanisms of the hollow type, preferably first and second harmonic drive mechanisms. First and second rotational members are connected to the outputs of the first and second harmonic drive mech... | 05/31/1994 |
| 5316523 | Sprocket control apparatus A device, such as a printer or plotter for driving media, has sprocket wheels with sprockets engaging sprocket holes at the edges of the media. The sprocket wheels are driven via a drive belt. In order to adjust the relative angular position of one of the... | 05/31/1994 |
| 5314386 | Drive device for a rotatable shaft A drive device (140) for the rotatable shaft (44) of a mill (10) is disclosed including first and second, diametrically opposed carriers (142). In each of the carriers (142), the ends of first and second bearing plates (152, 154) and of a motor plate (176... | 05/24/1994 |
| 5311947 | Preselected casing tensioning system A well assembly utilizes a casing tensioning system that allows a preselected amount of stretch to be applied in the casing. The assembly includes a tubular mandrel that secures to the upper end of the string of casing. A load ring has internal grooves th... | 05/17/1994 |
| 5311939 | Multiple use well packer A well packer for engaging and sealing against the inside of a conduit having a mandrel, friction blocks, slips, and a packer seal. The friction blocks are supported by the mandrel and positioned parallel to the slips providing a short inexpensive packer.... | 05/17/1994 |
| 5311954 | Pressure assisted running of tubulars A pressure actuated, telescoping subassembly is supported by a pipe string to axially move an attached member within a wellbore. Increasing fluid pressure to the subassembly actuates a telescoping action, axially moving the attached member but not the sup... | 05/17/1994 |
| 5311958 | Earth-boring bit with an advantageous cutting structure An earth-boring bit is provided with three cutters, two of the three cutters are provided with heel disk cutting elements defined by a pair of generally oppositely facing disk surfaces that generally continuously converge to define a circumferential heel ... | 05/17/1994 |
| 5310000 | Foil wrapped base pipe for sand control The flow apertures of a perforated mandrel are temporarily sealed by a foil covering sheet which is made of a sacrificial material, for example, zinc, aluminum and magnesium The sacrificial covering sheet prevents dirty completion fluid from passing throu... | 05/10/1994 |
| 5310385 | Oil-operated tensioner with oil-sealed air entrance In an oil-operated tensioner having a cylindrical housing and a plunger defining a high-pressure oil chamber, air is prevented from entering the high-pressure chamber, as the plunger moves in the outward direction, by oil in an annular chamber formed in t... | 05/10/1994 |
| 5308289 | Damper pulley The disclosure relates to a damper pulley that exhibits a good damping effect and has a preferable resonance ratio. An annular damper-mass member is joined to an annular surface of a plate portion of a pulley through a first resilient rubber member. Two f... | 05/03/1994 |
