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| Number | Title | Issue Date |
| 6158722 | Mixing system for introducing and dispersing gas into liquids A mixing system utilizes up pumping impellers which entrain gas into the liquid both at the surface (the gas liquid interface) and below the surface by induction to draw gas down below the surface where it is dispersed into the circulation produced by the... | 12/12/2000 |
| 6142458 | Mixing system for dispersion of gas into liquid media In order to sparge gas into a liquid or liquid suspension in a tank wherein a principally axial flow pattern downwardly towards the bottom of the tank and then upwardly along the side wall of the tank returning axially downward is established by an axial ... | 11/07/2000 |
| 6109449 | Mixing system for separation of materials by flotation A mixing system in a tank provides a flotation cell for froth collection of minerals such as metallic ores thereby separating such ores from other materials with which they are mined and enabling a concentrated ore component to be collected. The mixing sy... | 08/29/2000 |
| 6089748 | Apparatus for stabilizing a mixer which circulates liquid against excessive oscillation Mixer apparatus having an impeller on a shaft, which circulates a body of liquid the surface of which can clear the impeller, especially when the liquid is in a tank, and the tank is drained, is protected against excessive by use of a flexural member, whi... | 07/18/2000 |
| 5988604 | Mixing impellers especially adapted for use in surface aeration Impellers are provided which enhance the efficiency of surface aeration of a liquid, for example, liquid contained in open aeration tanks, in terms of the mass of oxygen transferred per hour to the liquid per horsepower used in driving the impeller. The i... | 11/23/1999 |
| 5972661 | Mixing systems A system for providing improved bulk liquid mixing and effective gas-liquid contacting for mass transfer of the gas to the liquid, especially a non-Newtonian liquid, the viscosity of which decreases when under shearing conditions (shear thinning), in an u... | 10/26/1999 |
| 5951162 | Mixing impellers and impeller systems for mixing and blending liquids and liquid suspensions having efficient power consumption characteristics A mixing process may be carried out in a tank of a certain diameter. The process may also be constrained to the use of an impeller of certain diameter in order to obtain the flow pattern desired to carry out the process. The power consumption of the syste... | 09/14/1999 |
| 5925293 | Mixer sparging apparatus In order to efficiently mass transfer from gas, particularly air, into liquid or liquid suspensions with enhanced efficiency in terms of the mass of the gas transferred to the liquid, the gas is released or sparged through a plurality of open pipes which ... | 07/20/1999 |
| 5842377 | Mixer gearbox assembly having a cross-shaft alternatively mounted in one or two bearings and configured to receive different drive motors A mixer gearbox assembly for driving a mixer shaft capable of receiving either a complete electric drive motor on a first face of the gearbox housing for operatively coupling with a first end of a long cross-shaft in the housing, or alternatively a partia... | 12/01/1998 |
| 5779359 | Mixer having exposed clean-in-place bearing assemblies An improved immersible magnetically-coupled mixer has a plurality of rollable bearing assemblies readily cleanable by flushing in place and easily removable and replaceable without damage to either the mixer impeller or the bearings. The rollable bearings... | 07/14/1998 |
| 5758965 | Mixer system An improved immersible magnetically-coupled mixer has rollable bearings readily cleanable by flushing in place and easily removable and replaceable without damage to either the mixer impeller or the bearings. The rollable bearings are resistant to corrosi... | 06/02/1998 |
| 5720486 | Self-formed labyrinth seal A labyrinth shaft seal for preventing the migration of gear lubricant from a mixer drive assembly into a batch of process materials being mixed. In the preferred embodiment, a portion of the gearcase outboard of the upper quill bearing, preferably the act... | 02/24/1998 |
| 5480228 | Mixer systems A mixer system for aggressive (toxic, hazardous, corrosive, etc.) materials which are mixed (agitated, suspended, circulated, etc.) in a vessel with an impeller connected to a drive shaft has the impeller and its shaft mounted in an assembly which extends... | 01/02/1996 |
| 5368390 | Mixer systems A mixer system for aggressive (toxic, hazardous, corrosive, etc.) materials which are mixed (agitated, suspended, circulated, etc.) in a tank with an impeller connected to a drive shaft has the impeller and its shaft mounted in an assembly which extends t... | 11/29/1994 |
| 5050823 | Radio-based railway switch control system A switch machine operates a track switch under radio control via a switch controller. The switch controller may be given an identifying address unique to it which distinguishes the switch machine from other switch machines in the railway territory. In add... | 09/24/1991 |
| 5016683 | Apparatus for controllably feeding a particulate material An apparatus for controllably feeding a particulate material, and particularly silicon material into a crucible, comprises a drum mounted for rotation about an axis tilted at an acute angle with reference to the horizontal. At least one cavity, a portion ... | 05/21/1991 |
| 5006283 | Mixing system for dispersing a compressible fluid such as gas into liquid in a vessel The gas outlet of a pipe or other sparging device is encompassed by a cover or cap which is located between the gas outlet and the mixing impeller at the bottom of a vessel. The cap is closed at the top and has a side wall so that the gas bubbles disperse... | 04/09/1991 |
| 5006783 | Three phase voltage regulator system using tertiary winding transformer A three phase voltage regulator system uses a transformer having primary, secondary and tertiary windings for each phase which are closely magnetically coupled to each other and are connected to provide a four wire (wye) three phase output on three hot li... | 04/09/1991 |
| 5006989 | Digital vital rate decoder This invention relates to cab signalling systems that receive various permissible maximum speed signals and decode the maximum speed signal to inform the engineman of a train of the current maximum safe speed that a train may travel. The apparatus of this... | 04/09/1991 |
| 5005843 | Chuck mechanism for detachably connecting impeller shaft and drive unit of mixing apparatus Chuck mechanisms quickly connect and enable quick disconnection of an impeller shaft of a mixer from the drive shaft of the motor unit. A spindle has a keyway which enables a key, either a detent key which is movable in the keyway or a key which is provid... | 04/09/1991 |
| 4882098 | Mass transfer mixing system especially for gas dispersion in liquids or liquid suspensions A mixing system for dispersing gas or other fluids in liquid which may have a solid suspension so as to improve mass transfer to the liquid or its solids suspension while maintaining a low pattern which is substantially axial (up and down) in the tank con... | 11/21/1989 |
| 4458879 | Valve Disclosed is a valve in which the valve internals, the valve seat, guides and slide valve are maintained in position solely by a clamping action of a quick make-up cylinder having an inlet flow passage into the valve. The valve is particularly suited for ... | 07/10/1984 |
| 4459030 | Draft tube apparatus Improved draft tube mixing apparatus having one or more of the following features: (a) controlled circulation at the inlet of the tube which allows operation at reduced submergence by preventing formation of a vortex; (b) an additional passage for control... | 07/10/1984 |
| 4415408 | Apparatus, and method for controlling consistency Consistency of slurries such as paper pulp stock is controlled by ultrasonically measuring the flow of the slurry (the velocity of the particles therein) as the slurry is agitated by an impeller which induces circulation thereof within a region in a tank ... | 11/15/1983 |
| 4378165 | Draft tube apparatus Improved draft tube mixing apparatus having one or more of the following features: (a) controlled circulation at the inlet of the tube which allows operation at reduced submergence by preventing formation of a vortex; (b) an additional passage for control... | 03/29/1983 |
| 4358206 | Draft tube apparatus Improved draft tube mixing apparatus having one or more of the following features: (a) controlled circulation at the inlet of the tube which allows operation at reduced submergence by preventing formation of a vortex; (b) an additional passage for control... | 11/09/1982 |
| 4307463 | Vital rate decoder A vital rate decoder for actuating one of a plurality of output relays in correspondence with the frequency of an input signal applied thereto, comprising a main rate decoding processor for evaluating the frequency and duty cycle of the input signal by es... | 12/22/1981 |
| 4295020 | Electrical switch mechanism An electrical switch mechanism which operates in response to predetermined deceleration and/or acceleration is especially adapted for use on board trains for brake assurance purposes. Switch contacts biased to a safe switching condition are actuated by an... | 10/13/1981 |
| 4234870 | Vital electronic code generator A code generator including a programmed microprocessor for transmitting a selected fixed frequenccy signal through optical isolators to tuned vital relay drivers. Feedback information from these drivers monitors their operation and checks operation of out... | 11/18/1980 |
| 4231974 | Fluids mixing apparatus To introduce and mix fluids, particularly gas (air) with liquid, which is called sparging, an airfoil blade impeller is used for pumping the liquid and for introducing the fluid to be sparged into the liquid through holes in the suction surface of the bla... | 11/04/1980 |
| 4229663 | Apparatus for sensing vehicular mechanical motion An apparatus for sensing vehicular mechanical motion, which includes a motion transducer for sensing a vehicular displacement, and which generates plural groups of transducer signals based on the sensed displacements, with the transducer signals of each g... | 10/21/1980 |
| 4158840 | 3-D Radar comprising 2-D radar with height finding attachment A radar with 3-D capability comprises a conventional 2-D radar with a height finding attachment. More particularly, a height finding antenna is mounted on the back surface of the conventional 2-D antenna reflector and points in a direction 180° offset in... | 06/19/1979 |
| 4157580 | Fail-safe time delay circuit A fail-safe time delay circuit is provided to produce an output a predetermined time, and no less than a predetermined time after an input stimulus. The circuit includes a driving circuit for a pair of relays which are operated at slightly greater than 50... | 06/05/1979 |
| 4153898 | Audible alarm with laminated magnetic core An electrically actuated audible alarm having a magnetic structure comprising an assembly of laminations is provided to reduce eddy current losses. With the reduction of eddy current losses, faster magnetic flux buildup is possible and an increased veloci... | 05/08/1979 |
| 4152756 | Railroad crossing signal lamp An improved railroad crossing signal includes a deep dish parabolic reflector and an essentially flat plastic lens angled forward at the top relative to the axis of the reflector. The lens includes prism elements for laterally dispersing parallel light fr... | 05/01/1979 |
| 4150250 | Strain relief fitting In many assemblies it is desirable to provide a strain relief device to grip an electric cord to prevent longitudinal motion of the cord, with respect to the strain relief device. The disclosed strain relief member surrounds the electric cord and is enclo... | 04/17/1979 |
| 4148215 | Apparatus for making rheological measurements Consistency transmitters are described in which a torsional transducer is used as a flexural mount for a consistency sensor. A torsional force balance loop, in which signals from the transducer operates a torque motor to balance the torsional forces on th... | 04/10/1979 |
| 4146944 | Carpet cleaning machine A carpet cleaning machine having a scrub brush, independent means for selectively delivering cleaning and rinse solutions, and vacuum means for removing the solutions and entrained dirt. A cleaning head is moved about the carpet on a pair of wheels by an ... | 04/03/1979 |
| 4146335 | Containerized solids mixing machine A machine for mixing solids in portable containers, such as shipping containers, is provided with a drive station which has a mechanism for holding the containers at one end thereof and contains motors and associated drive elements for revolving the conta... | 03/27/1979 |
| 4138141 | Force absorbing device and force transmission device A force absorbing device and a force transmission device are provided including at least one member having a tubular configuration. A second member extends into one end of the tubular member and engages it in an interference fit to form a permanent joint.... | 02/06/1979 |
