| Patent Number |
Title Of Patent |
Date Issued |
| 4533289 |
Sealing and liquid displacement systems for a linear pocket feeder |
August 6, 1985 |
| An improved sealing and liquid displacement system for a continuous linear pocket feeder for feeding materials from a low pressure to a high pressure region, particularly for feeding coal in a coal conversion process. A dual sealing system including a sphincter followed by a moving labyr |
| 4459101 |
Burner systems |
July 10, 1984 |
| A burner system particularly useful for downhole deployment includes a tubular combustion chamber unit housed within a tubular coolant jacket assembly. The combustion chamber unit includes a monolithic tube of refractory material whose inner surface defines the combustion zone. A met |
| 4456068 |
Process and apparatus for thermal enhancement |
June 26, 1984 |
| Thermal treatment apparatus for downhole deployment comprising a combustion stage with an elongated hot wall combustion zone for the substantially complete combustion of the fuel-air mixture and an ignition zone immediately upstream from the combustion zone in which a mixture of atom |
| 4382633 |
Longwall mining system |
May 10, 1983 |
| A longwall mining system includes a bidirectional shearer and a roof supporting structure. The shearer includes a pair of angled floor drums, a pivotable roof drum and a loading conveyor. Each drum has a plurality of picks disposed about the drum surface for cutting a material to be mine |
| 4379670 |
Linear pocket letdown device |
April 12, 1983 |
| A system for removing material from the bottom of a pressure vessel without relieving the vessle's pressure in which a tube connected intermediate its inlet and outlet ends to the pressure vessel receives material through the connection and into pocket means carried by a conveyor running |
| 4363572 |
Injector for a material transport system |
December 14, 1982 |
| An injector for a material transport system includes a helical inducer having a housing with a fluid input port, a material input port and a discharge port, each port is open to an internal chamber of the housing. A rotor with a helical blade is mounted to the housing and constrained for |
| 4302018 |
Packer arrangements for oil wells and the like |
November 24, 1981 |
| The packer includes an elongated tubular casing, and a metal ring is disposed in its entirety within an annular recess in the casing. The recess has a circumferential opening extending entirely around the peripheral outer surface of the casing. Hydraulic fluid is flowed into the rece |
| 4290516 |
Torque limiter |
September 22, 1981 |
| A torque limiter with a rotatable housing having a series of dowels arranged annularly about an interior surface thereof and a sleeve having a pair of arms with a roller at the tip of each arm. The rollers are mounted to engage pairs of adjacent dowels selectively for transmitting torque |
| 4249838 |
Sealed flight screw injector |
February 10, 1981 |
| An injector with a pair of counter-rotating screws that are mounted along parallel axes in cylindrical chambers formed in a housing are driven in synchronism by a driver. A series of plates are slidably received in a track provided in the housing and are fitted between successive flights |
| 4201270 |
Roof bolter |
May 6, 1980 |
| An operator controlled roof bolter with a flexible shaft drill and a roof bolt inserter for drilling and inserting a roof bolt into an unsupported roof of a mine while the operator is positioned at an outby station under a supported roof. The flexible shaft roof drill is constrained to a |
| 4141329 |
Internal combustion engine fuel injection system |
February 27, 1979 |
| A fuel injection system is disclosed for an internal combustion engine having at least one cylinder and a piston operating therein to define with the cylinder head a combustion chamber wherein air is compressed while the piston is moving to one end of its stroke. The system has pressuriz |
| 4102416 |
Stabilized conical boring tool |
July 25, 1978 |
| A self-advancing conical boring tool with a tapered frame for supporting roller cutters, each of which has a frusto-conical body with a plurality of teeth randomly disposed about its periphery. Each roller cutter is constrained within a pair of thrust bearings and a pair of self-aligning |
| 4098121 |
Humidity indicator |
July 4, 1978 |
| A humidity indicator with a housing having mounted therein a sensing element that changes dimensionally in response to humidity variations. A flexible diaphragm is captively held within the housing and is moved by dimensional changes of the sensing element. An intermediate plate with a |
| 4000783 |
Conical boring tool |
January 4, 1977 |
| A self-advancing conical boring tool with frusto-conical roller cutters rotatably mounted to a tapered frame by means of self-aligning spherical roller bearings. Each roller cutter is constrained within a pair of spherical roller bearings for free rotation about an axis that is both |
| 3956131 |
System for separation of liquids and solids from a carrier liquid |
May 11, 1976 |
| An integrated system for the separation of liquid and solids entrained in a carrier effluent including a primary gross oil and solids separator, a secondary solids separator and a three stage centrifuge for final separation of fine solids and said entrained liquid from the carrier ef |
