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| Number | Title | Issue Date |
| 4800952 | Thaw flow control for liquid heat transport systems In a liquid metal heat transport system including a source of thaw heat for use in a space reactor power system, the thaw flow throttle or control comprises a fluid passage having forward and reverse flow sections and a partition having a plurality of ble... | 01/31/1989 |
| 4800953 | Baffle for coolant passage A baffle for partitioning fluid circulating passages that are provided in a structure for heat transfer purposes. The baffles are inserted without the need for extra drilling and tapping of the structure, and include an elongated, substantially flat body ... | 01/31/1989 |
| 4800954 | Laminated heat exchanger A laminated heat exchanger includes a plurality of parallel spaced tube elements with tanks at one end thereof, and fins disposed between adjacent tube elements. Each tube element has a pair of joint portions projecting from the other end thereof toward t... | 01/31/1989 |
| 4800955 | Heat exchanger A heat exchanger having an inlet duct for admission of a first fluid to be heated, an outlet duct for discharge of the first fluid after heating thereof, the ducts being arranged in substantially parallel relation, and an assembly of a plurality of heat e... | 01/31/1989 |
| 4800956 | Apparatus and method for removal of heat from packaged element In order to provide thermal coupling of a package, particularly a package containing electronic components, and a heat sink, a thermal transfer assembly includes a first assembly having a group of generally parallel cooling fins coupled to the package. Co... | 01/31/1989 |
| 4800957 | Recovering hydrocarbons with a mixture of carbon dioxide and alcohol The invention is a method of recovering hydrocarbons from underground hydrcarbon formations by injecting a mixture of carbon dioxide and a polar alcohol or polar glycol additive, said additive having less than about 9 carbon atoms. The mixture of carbon d... | 01/31/1989 |
| 4800958 | Annulus pressure operated vent assembly A vent subassembly includes a vent body having an opening which is covered or uncovered dependent upon the location of a vent sleeve relative to the vent body. The vent subassembly can be connected below a packer, and the vent sleeve can be connected to a... | 01/31/1989 |
| 4800959 | Microbial process for selectively plugging a subterranean formation A microbial process is provided for selectively plugging a high permeability stratum or zone in a subterranean reservoir. Starved bacteria of reduced size are injected into the zone. A poor-nutrient media is either simultaneously or subsequently thereafte... | 01/31/1989 |
| 4800960 | Consolidatable gravel pack method Disclosed is a method for controlling sand flow in an producing well by forming a permeable consolidated gravel pack. Gravel is coated with a resin such as an oligomer of furfuryl alcohol containing an ester and as a catalyst an oil soluble, slightly wate... | 01/31/1989 |
| 4800961 | Sprinkler or fire-extinguishing nozzle In a sprinkler or spray nozzle for on-site fire-extinguishing systems provided with at least one intake opening (11) and with at least one outlet opening (16) downstream of the intake opening, and optionally provided with a downstream deflector, the outle... | 01/31/1989 |
| 4800962 | Planter hydraulic system with means for locking row markers during transport A wide farm implement is provided with a swingable tongue which permits endwise to and from fields. A pair of transport wheels are provided for supporting the implement for endwise transport and the support wheels, on which the implement is supported duri... | 01/31/1989 |
| 4800963 | Bidirectional moldboard plow with moldboard frame including guide member A moldboard plow with a bidirectional moldboard which includes a moldboard frame that can turn by use of a reversal mechanism which also serves as a tilting mechanism. Included is a hitching frame that has a central pole and hitching plates, a moldboard f... | 01/31/1989 |
| 4800964 | Compact shank assembly with leaf spring A compact, leaf spring biased shank assembly with a shank bracket which clamps to a tube and leaves the upper portion of the tube relatively unobstructed to eliminate interference with the lift mechanism and/or implement frame. The shank bracket includes ... | 01/31/1989 |
| 4800965 | Damping element, and its installation in a motor-driven hand tool A damping element for damping three-dimensional and torsional oscillations, in particular in hand tools, is proposed. The damping element includes an approximately bell-shaped rubber spring element defining a cavity which is filled with a damping fluid. T... | 01/31/1989 |
| 4800966 | Devices for drilling branched wells A device for drilling lateral boreholes from a cased parent well comprises selecting and coupling means adapted to cooperate with a deflection unit placed within the parent well. The selecting and coupling means are mounted at the lower end of an extensio... | 01/31/1989 |
| 4800967 | Drilling machine for digging trenches in the ground A drilling machine for digging trenches in the ground of the type comprising at least one substantially vertical support plate (3) on which are mounted two drilling drums (2) one one each side of it for rotation about an axis (4) substantially perpendicul... | 01/31/1989 |
| 4800968 | Well apparatus with tubular elevator tilt and indexing apparatus and methods of their use An elevator bail with elongated slots, an elevator tilting assembly and indexing apparatus, and a top drive drilling unit in combination with such devices that are connected to the upper end of a drill string and movable upwardly and downwardly with the d... | 01/31/1989 |
| 4800969 | Fast descent core barrel apparatus A wire line core barrel inner tube assembly having a latch body that has a maximum diameter, axial intermediate portion providing a downwardly facing annular shoulder seatable on a drill stem landing ring and a fluid bypass channel extending through the m... | 01/31/1989 |
| 4800970 | Flexible beam mechanical weighing scale A small mechanical weighing scale capable of weighing relatively light, flat articles such as envelopes. The scale contains a slidable pullout flexible beam that is adapted to hold a thin flat article. The tape will break away in accordance with the weigh... | 01/31/1989 |
| 4800971 | Scale assembly A scale assembly has a platform which is connected with load sensing means which provide an output indicative of the magnitude of a load. The platform has an upper portion which includes a body of concrete and a lower portion formed of metal. The upper an... | 01/31/1989 |
| 4800972 | Apparatus for weighing rolling railcars Various improvements are disclosed for enhancing accuracy in a system for weighing rolling railcars in order to remedy previous factors contributing to weighing inaccuracies. In a system operative by means of a plurality of longitudinally spaced sensors s... | 01/31/1989 |
| 4800973 | Portable electronic scale of minimal thickness and weight A portable electronic scale of minimal thickness and weight is provided which is suitable for measuring the weight of an individual or object and which can be easily carried in a bag, stored in a cabinet or hung on a wall. The scale comprises a single loa... | 01/31/1989 |
| 4800974 | Electric steering gear An electronic control system for a steering assembly having an electric motor coupled to the steering assembly for providing power assist. The electric power assist motor is drivably connected to a steering member for assisting movement thereof in respons... | 01/31/1989 |
| 4800975 | Motor control unit for electrically operated power steering devices An electrically operated power steering device connected to a steering system of a motor vehicle to provide supplementary steering power by means of an electric motor. A motor control unit for the electrically operated power steering device controls the r... | 01/31/1989 |
| 4800976 | Method of controlling power steering device A method of controlling a power steering device controls the output from the power steering device in accordance with a vehicle speed and a steering angle. According to this method, the output from the power steering device is caused to be inversely propo... | 01/31/1989 |
| 4800977 | Control system for driving and steering driverless transport devices Each transport device contains at least two drive wheels which are driven at individual speeds VA and VB and which are pivotable by related steering angles and ଲ. Identical servo-drive units are associated with the driv... | 01/31/1989 |
| 4800978 | Magnetic object detecting system for automated guided vehicle system An improved magnetic object detecting system having high sensitivity and noise immunity is disclosed. The detection system is of the type having a stimulation coil for generating a magnetic field and a pair of magnetic field detection coils, and the stimu... | 01/31/1989 |
| 4800979 | Cantilever rear suspension system for motorcycles A motorcycle having a cantilever-type rear swing arm pivotally mounted to the vehicle frame. A cushion member associated with the rear swing arm extends between the upper frame and linkage below the swing arm through an offset bore in the swing arm. A rea... | 01/31/1989 |
| 4800980 | Body cover and trunk structure for a motor scooter A body cover for a motor scooter vehicle with a rear cover for covering the engine unit. The rear cover has a projection in its upper portion over the rear wheel, the projection having an outlet. Accordingly, the heat generated from the engine unit may be... | 01/31/1989 |
| 4800981 | Stabilized reference geophone system for use in downhole environment For seismic exploration, a method and apparatus are set forth wherein geophones, preferably arranged in XYZ relationship to one another fixedly within a hermetically sealed housing, are located in a deviated well. The position of the housing with respect ... | 01/31/1989 |
| 4800982 | Cleanable in-the-ear electroacoustic transducer A hearing aid including a microphone, an adjustable amplifier, and a transducer comprising an acoustic driver driving a diaphragm disposed within an acoustic chamber, all mounted in an in-the-ear housing having a sound outlet passage leading from the acou... | 01/31/1989 |
| 4800983 | Energized acoustic labyrinth Acoustic wave "diffractor" labyrinth(s) are positioned obliquely in front of sound producing transducer(s) to cause very wide angle dispersion of the sound waves projected from said transducer(s) into said labyrinths. The labyrinths may consist of a compl... | 01/31/1989 |
| 4800984 | Acoustical barrier for vehicles An acoustical barrier usable for sound deadening and vibration dampening in vehicles which includes a base layer of a flexible foam secured at the outer surface to an insulation layer of polyurethane elastomer molded to the shape of the area to be insulat... | 01/31/1989 |
| 4800985 | Silencer with a side branch A silencer includes an air passage tube having an air inlet for introducing air thereinto, and a side branch tube connected to the air passage tube and having a closed end for attenuating noise produced by the air introduced into the air passage tube. The... | 01/31/1989 |
| 4800986 | Collapsible tower for ATVs A collapsible tower apparatus (10) for use on an ATV (100); wherein, the tower apparatus (10) comprises a framework unit (11) that is pivotally and reinforceable attached on one end to the front (102) and rear (103) racks of the ATV (100) and wherein the ... | 01/31/1989 |
| 4800987 | Mechanic workstand A mechanic's work platform for attachment to a front tire of a motor vehicle has an essentially rectangular support frame to be disposed and supported by a front tire of the vehicle. A depending framework is hingedly attached to the support frame and incl... | 01/31/1989 |
| 4800988 | Adjustable platform for a rung ladder An adjustable platform for a rung ladder has a footplate which provides sufficient surface area to enable full contact by the users feet. A footplate support system enables the footplate to accomodate a range of angles of inclination of the ladder relativ... | 01/31/1989 |
| 4800989 | Portable outdoorsman's seat A outdoorsman's seat comprising a rigid rectangular seat member having canted opposed slots in its longitudinal edges to receive two limbs of a supporting line adapted to be secured to two spaced apart trees. The opposed inclined slots result in a resulta... | 01/31/1989 |
| 4800990 | Three speed valve control for high performance hydraulic elevator A hydraulic elevator up direction control system is provided including a circulating valve connected between the supply and the return of a source that normally supplies pressure to the cylinder of an elevator controlled by a two position switchable setti... | 01/31/1989 |
| 4800991 | Brake maintenance monitor Method and apparatus for ensuring periodic adjustment of vehicle braking systems to maintain brake mechanism motion within prescribed bounds are disclosed and include an arrangement for monitoring motion of a selected brake mechanism component each time t... | 01/31/1989 |
