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| Number | Title | Issue Date |
| 4665963 | Pneumatic tire inner liner having puncture sealing characteristics There is provided a tubeless pneumatic tire with an inner liner having puncture sealing characteristics comprising as the inner liner a puncture sealing laminate having an outer halobutyl polymer containing layer and an inner polymer containing layer, the... | 05/19/1987 |
| 4665964 | Foldably extensible and collapsible track-mounted shade device for skylight-type window The device comprises a foldably extensible and collapsible shade member, and means for forming corresponding sets of laterally projecting trunnions at spaced intervals along opposing edges of the shade member. It also comprises a pair of elongated track d... | 05/19/1987 |
| 4665965 | Control system for roller-blinds or the like with swivel blades This control system for a roller-blind or the like comprising swivel blades coupled to a master blade carrying at one end a stud adapted, during its downward movement, to travel in a slide groove disposed behind a rocker and, during its upward movement, t... | 05/19/1987 |
| 4665966 | Riser sleeves for metal casting moulds A riser sleeve has at its end which is uppermost when the sleeve is located in the mould a holding member which can be engaged by a mechanical holding device so as to adapt the sleeve to automatic handling. The holding member may be for example a disc, ri... | 05/19/1987 |
| 4665967 | Device for the dumping of shells The invention relates to a device for the dumping of shells, having a dumping station and pattern carriers in which the dumping station is combined with several pattern carriers transported in a circle and their pattern device. By means of this device, it... | 05/19/1987 |
| 4665968 | Casting mold with feeder A casting mold with a feeder, particularly for producing cast iron, includes an exothermically heated feeder mass. The casting material in the cylindrical or slightly conical feeder volume of the feeder mass is kept in a liquid state until termination of ... | 05/19/1987 |
| 4665969 | Continuous casting apparatus A continuous casting contrivance comprises a mold (7a) capable of being installed at the floor of the crucible (1) in an opening (3) that may, if necessary, display a casting punch (25a). Further provided for the mold is a cooling arrangement. As to wheth... | 05/19/1987 |
| 4665970 | Method of producing a metallic member having a unidirectionally solidified structure A metallic material is passed through a heating mold having a melting zone to produce a metallic member having a unidirectionally solidified structure.... | 05/19/1987 |
| 4665971 | Air conditioner system for automobiles An air conditioner system for vehicles which includes at least two connecting passages interconnecting a main duct of the front-seat air conditioner unit and an air mix chamber in a duct of the rear-seat blower unit. Air mix doors are disposed in the conn... | 05/19/1987 |
| 4665972 | Oil-radiator-containing water box for a motor vehicle heat exchanger An oil radiator (16) containing heat exchanger water box has oil inlet/outlet tubes (22) passing through openings in the wall of the water box, which openings are of greater diameter than the diameter of said oil inlet/outlet tubes or of their flanges (26... | 05/19/1987 |
| 4665973 | Environmental control system An environmental control system having an ozone decomposition catalyst coating in the hot pass side of the primary heat exchanger. The environmental control system includes primary and secondary heat exchangers as well as a rotary compressor and a rotary ... | 05/19/1987 |
| 4665974 | Heat exchanger of modular type and process for manufacture thereof A heat exchange device comprises at least one zone for the circulation of at least two fluids in heat exchange relationship and input and output means for these fluids, the zone being of modular structure and consisting essentially of a stacking of lattic... | 05/19/1987 |
| 4665975 | Plate type heat exchanger A plate-type heat exchanger wherein a plurality of flat plates are stacked in face-to-face relationship and diffusion bonded together. The plates are formed within their respective thicknesses with channels forming heat-exchange zones through which fluid ... | 05/19/1987 |
| 4665976 | Fluid deflection shield assembly A fluid deflection shield assembly for use with an oil well pump having a polished rod reciprocating within a stuffing box and providing a fluid-tight seal entirely around the stuffing box and the polished rod whereby the fluid deflection shield assembly ... | 05/19/1987 |
| 4665977 | Tension set seal bore packer A seal bore packer comprising a packer subassembly which can be employed with either wireline or tubing manipulatable packer setting subassemblies is disclosed. Packing elements and slips on a packer subassembly are expanded when relative axial forces are... | 05/19/1987 |
| 4665978 | High temperature packer for well conduits A packer for effecting steam treatment of a production formation of a subterranean well comprises an insulated mandrel which is slidably inserted within the bore of an inner tubular body assembly. An outer operative tubular assembly surrounds the inner as... | 05/19/1987 |
| 4665979 | Metal casing hanger seal with expansion slots A casing hanger seal for a subsea well uses a seal ring having inner and outer walls spaced radially apart from each other. An energizing ring is moved from disengaged position to an engaged position between the walls, wedging them apart to form the metal... | 05/19/1987 |
| 4665980 | Method for improving well production by sonically driving granular medium installed in well A granular medium such as gravel is emplaced in the bottom of a well. A well liner is attached to the end of a drill pipe and lowered to the bed of gravel. The drill pipe is then driven at a sonic frequency which may be a resonant frequency of vibration o... | 05/19/1987 |
| 4665981 | Method and apparatus for inhibiting corrosion of well tubing Method and apparatus of inhibiting corrosion of well tubing. A corrosion monitor detects the concentration of a corrosive element in fluid produced from well tubing. Corrosion inhibitor is injected into the tubing by a pump at the depth at which water vap... | 05/19/1987 |
| 4665982 | Formation fracturing technique using liquid proppant carrier followed by foam A hydraulic fracturing process includes the step of pumping into the well a fracturing liquid containing a proppant for fracturing the formation and delivering the proppant into the fracture. At or near the end of the fracturing operation, a foam slug is ... | 05/19/1987 |
| 4665983 | Full bore sampler valve with time delay A sampler valve including a tubular housing defining a cylindrical chamber of enlarged diameter in comparison to the remainder of the full bore extending through the valve, an axially slidable sample chamber mandrel adapted to span the length of the enlar... | 05/19/1987 |
| 4665984 | Method of measuring crustal stress by hydraulic fracture based on analysis of crack growth in rock Earth's crustal stress is measured by drilling a bore-hole in rock body, producing a longitudinal crack at a selected portion thereof with or without a natural traverse crack through intermittent application of hydraulic pressure thereat while measuring t... | 05/19/1987 |
| 4665985 | Reversible plugging of oil bearing formations Porous, subterranean oil bearing formations penetrated by at least one wellbore are temporarily and reversibly plugged/sealed, by injecting therein a solution of an alkali metal silicate and a gelling agent therefor, permitting said alkali metal silicate ... | 05/19/1987 |
| 4665986 | Gel and method for reducing steam channeling A gel-forming composition is provided comprising a PVA based substance selected from the group consisting of a polyvinyl alcohol, a polyvinyl alcohol copolymer, and mixtures thereof, an aldehyde operable for crosslinking with the PVA based substance, and ... | 05/19/1987 |
| 4665987 | Prepartially crosslinked gel for retarding fluid flow A gel-forming composition is provided comprising a PVA based substance selected from the group consisting of a polyvinyl alcohol, a polyvinyl alcohol copolymer, and mixtures thereof, aldehyde, and water. The gel-forming compositions are preheated to effec... | 05/19/1987 |
| 4665988 | Method of preparation of variable permeability fill material for use in subterranean formations A method and composition for filling voids in a subterranean formation to provide a fill having a substantially uniform permeability. A viscosified aqueous fluid is prepared to which is added a first particulate having a particle size no greater than abou... | 05/19/1987 |
| 4665989 | Well production start up method A method for starting up the production of hydrocarbonaceous fluid from a wellbore which has been shut-in for a time such that the ratio of water to hydrocarbon present in the hydrocarbonaceous fluid in the wellbore is sufficiently high as to make it unec... | 05/19/1987 |
| 4665990 | Multiple-stage coal seam fracing method An improved method of multiple-stage hydraulic fracturing of coal seams to improve the rate and total recovery of gas therefrom. In one aspect, the improvement comprises completing the well with 7-inch or larger casing and 31/2 inch or larger tubing. In a... | 05/19/1987 |
| 4665991 | Downhole tool with gas energized compressible liquid spring An annulus pressure responsive downhole tool includes a housing having a power piston slidably disposed therein. First and second pressure conducting passages communicate a well annulus exterior of the housing with first and second sides of the power pist... | 05/19/1987 |
| 4665992 | Method and apparatus for installing packers in a well Remote control of hydraulically set packers is achieved by incorporating a hydraulic energy accumulator into a well tubing string. A hydraulic line connecting the accumulator with the packers setting mechanism is blocked by a shearable plug connected betw... | 05/19/1987 |
| 4665993 | Hydrated fibrous mats Disclosed is a hydrated fibrous mass prepared by the steps including introducing a source of cellulosic fibers to water with continuous mixing until a ratio of water to fibers of about 50 to 1 is obtained and mixing the water and source of cellulosic fibe... | 05/19/1987 |
| 4665994 | Post driving implement A portable hand held post driver which is fully operable by a single worker and which uses a fluid powered cylinder to drive posts into the ground. The cylinder raises a balanced driving weight and forces the weight down onto the post. The cylinder is rev... | 05/19/1987 |
| 4665995 | Wedging assembly for borehole steering or branching A wedging assembly for steering or branching a borehole comprises a wedge defining the steering or branching angle, a locking device for locking the wedge in a desired position, and an actuator for actuating the locking device, the locking device includin... | 05/19/1987 |
| 4665996 | Method for reducing friction in drilling operations Hardfacing the principal bearing surface of a drill pipe with an alloy having the composition of: 50-65% Cobalt, 25-35% Molybdenum, 1-18% Chromium, 2-10% Silicon and less than 0.1% Carbon reduces the friction between the drill string and the casing or roc... | 05/19/1987 |
| 4665997 | Pressure balanced bearing assembly for downhole motors A downhole motor and bearing assembly for high pressure operation has a tubular housing with an inlet and outlet for flow of drilling fluid. A stator is supported in the housing and a rotor is supported for rotary movement in the stator. An open tubular s... | 05/19/1987 |
| 4665998 | Mechanical well jar A mechanical well jar is disclosed having inner and outer tubular members movable longitudinally relative to each other a limited distance for connecting in a pipe string. Annular shoulders on the members engage to limit the relative longitudinal movement... | 05/19/1987 |
| 4665999 | Variable length three-cone rock bit nozzles This invention relates to multi-cone rock bits with three or more nozzles of varying length to affect different flow velocities from each of the nozzles. The nozzles at different lengths create a crossflow of fluid on a borehole bottom to lift detritus th... | 05/19/1987 |
| 4666000 | Rock bit cutter retainer An improved retainer for a rotary cone rock bit and a method for inserting the same is disclosed. A cone cutter is mounted on a bearing pin of an arm of the rotary cone drill bit. Formed in the bearing pin and the inner wall of the cone cutter is an annul... | 05/19/1987 |
| 4666001 | Earth boring bit with improved rigid face seal assembly An earth boring bit having a cantilevered bearing shaft and a compensator system to equalize the pressure of the lubricant with the hydrostatic pressure of the drilling fluid surrounding the bit. A rigid face seal assembly, positioned between the cutter a... | 05/19/1987 |
| 4666002 | System for compulsory participation of weighing machines in combinatorial weighing A system for compelling weighing machines to participate in a combinatorial weighing operation operates by updating the number of times a weighing machine is not selected for a combination, whenever a single combination giving a total weight value within ... | 05/19/1987 |
