Patents Assigned to M
  • Patent number: 5587011
    Abstract: This invention involves a method of optically whitening clay minerals to transform their natural yellow tint to increased whiteness. Generally, it has been found that clay materials having low cation exchange capability can be directly reacted with very small amounts of cationic dyes, the apparent whiteness of said clay minerals being substantially increased thereby.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: December 24, 1996
    Assignee: J. M. Huber Corporation
    Inventors: Carl J. Marshall, Jr., Gary M. Freeman
  • Patent number: 5587057
    Abstract: Electrolytic treaters for treating highly conductive liquid media include a conductive housing structure which is fluidically sealed and has inlet and outlet fluid connections, a conductive electrode structure positioned within the housing structure, and a DC power supply connected to components of the housing and electrode structure in such a manner that the output voltage of the power supply is applied across a substantial portion of the liquid media to be treated to control the current flow from the power supply. In a preferred embodiment, the electrode structure is formed by a center electrode rod with a plurality of ring electrodes positioned coaxially between the center electrode rod and the housing. Each ring electrode is formed by a plurality of circumferentially spaced rod elements extending parallel to the center electrode. The rod elements in a given ring electrode are held in place by a plurality of annular spacer baffles which additionally affect the flow of liquid media through the treater.
    Type: Grant
    Filed: December 7, 1993
    Date of Patent: December 24, 1996
    Assignee: David M. A. Metzler
    Inventors: David M. A. Metzler, Albert L. Mauk
  • Patent number: 5588011
    Abstract: A finite impulse response (FIR) filter and a Viterbi detector system for a magnetic read channel are disclosed. The FIR equalizer generates equalized sampled outputs to the Viterbi detector system. The Viterbi detector system determines the most probable value of all references, R.sub.i by accumulating a summation of data sample values, D.sub.t, for selected legal bit sequences over a significant amount of random data. The summation and count of data samples are output to a system microprocessor for calculation of an average reference for each path of the Viterbi system. The Viterbi detector system also calculates, in real time, magnitude of differences between the output data received from the FIR equalizer and transition references for each data sample to generate transition metrics, adds transition metrics to state metrics from the source node of two paths, and compares the result. The lesser of the two results yields the most likely correct state metric.
    Type: Grant
    Filed: February 5, 1996
    Date of Patent: December 24, 1996
    Assignee: C. M. Riggle
    Inventor: C. M. Riggle
  • Patent number: 5584319
    Abstract: There is described an electro-optical monitoring switch circuit design typically used for fire protection, sprinkler system valves. It comprises a light generating device responsive to a repetitive, pulse signal. Light emitting from the light generating device is directed towards the valve stem portion of the valve. Light emitted by the light generating device is reflected off of the valve stem of the valve in a first position and received by an electro-optical device such as a phototransistor. If the valve stem is moved to close the valve, there is no reflected light. Assuming the first position condition, the phototransistor produces an electrical signal substantially identical to the light generating signal. A phase comparator circuit monitors the output of the phototransistor, comparing it to the signal which excites the light generating device. When the two are synchronous, the comparator circuit produces a similar signal at its output. This obviates false indications due to noise.
    Type: Grant
    Filed: July 24, 1995
    Date of Patent: December 17, 1996
    Assignee: J. M. Cholin Consultants, Inc.
    Inventor: John M. Cholin
  • Patent number: 5584772
    Abstract: An infinitely variable hydrostatic torque-routing transmission with at least two operating ranges shiftable via switching elements includes a first, mechanical part, including a planetary differential gear, and a second, hydrostatic part, including two adjustable hydrounits. The hydrounits are coupled to each other energetically, are operable in both directions as pump or motor, and are coupled to the mechanical part. The ring gear is coupled, in the various operating ranges, for control of the direction of rotation and speed of rotation of the transmission output shaft, to a first hydrounit, and with the second hydrounit being in the first operating range in drive connection with the transmission output shaft via an alternating switching element, while the first hydrounit, connected to the ring gear, operates as a pump and the second hydrounit as a motor.
    Type: Grant
    Filed: December 16, 1994
    Date of Patent: December 17, 1996
    Assignee: J. M. Voith GmbH
    Inventor: Peter Hayd
  • Patent number: 5583848
    Abstract: There is disclosed a method for auditing routing information in a packet switching network. One method involves utilizing the telecommunications management network to sample through a general purpose management interface routing table information at live nodes in the operating network for a test message sent from a test initiator node to a final destination node through intermediate nodes. The telecommunications management network subsequently runs verification tests on the collected routing table information apart from the packet switching network. This method has the advantage that the verification test is not run on the network while still testing actual table routing information. Advantageously, this method tests actual routing information without overloading the network with additional routing requests provided by the test. Moreover, this method does not induce any load on the network. Further, this method uses data collected in real time from the network.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: December 10, 1996
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventor: Roch Glitho
  • Patent number: 5582873
    Abstract: The present invention relates to a method of making stabilized halogen containing organic polymer laminate comprising as one layer a halogen-containing organic polymer, an acid scavenger comprising a molecular sieve or zeolite; and a heat stabilizer and as the other layer, a similar composition devoid of a molecular sieve or zeolite.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: December 10, 1996
    Assignee: Carol M. Botsolas
    Inventor: Nirav Desai
  • Patent number: 5581901
    Abstract: A lifesaving apparatus comprising a scale usable as a life line, the scale comprising a high tensile strength wire with graduations in a longitudinal direction thereof, a drum for winding the metal wire thereonto, a casing accommodating the drum while permitting the same to rotate, a magnifying glass on the casing for allowing the graduations to be read, and a person carrying system. The high tensile strength wire of high tensile strength is formed of a stranded cable formed of a plurality of strands each having a tensile strength of at least 400 kgf/mm.sup.2 such that the high tensile strength wire is capable of suspending a person. The strands have a coat of a synthetic resin covering the strand. The person carrying system is connected to an end of the scale.
    Type: Grant
    Filed: August 30, 1994
    Date of Patent: December 10, 1996
    Assignees: M. Takahashi, T. Takahashi, R. Takahashi, M. Hashimoto, C. Yamada, K. Takahashi
    Inventor: Masakatsu Takahashi
  • Patent number: 5583764
    Abstract: An intrinsically safe data acquisition system is disclosed for use in hazardous locations. The system includes a driller's console that itself is intrinsically safe and includes a large LCD monitor, keypad and local CPU. The system further includes satellite data acquisition and processing boxes that are also intrinsically safe and that are located within the hazardous area. Each satellite box includes its own CPU and acquires and locally processes signals received from a number of field sensors. The satellite box converts the signals into digital form, and transmits the data via a fiber optic communication channel to a master CPU box located in an unclassified area. A high current intrinsically safe barrier distributes power from the master CPU box to the satellite box for powering all the sensors supported by that satellite box. Another such barrier distributes all the power required by the driller's console.
    Type: Grant
    Filed: October 18, 1994
    Date of Patent: December 10, 1996
    Assignee: M-I Drilling Fluids L.L.C.
    Inventors: George M. Nail, Alan W. Burkhard, Jeffrey R. Wedekind
  • Patent number: 5582262
    Abstract: A drive device has the following components: a connecting device that can be connected to an electric power supply, the connecting device being connected to a power converter; a first drive aggregate in the form of an electrical drive motor which is connected to the power converter; a second drive aggregate in the form of an internal combustion engine; a generator connected to the internal combustion engine and through the power converter to the electric drive motor; and various auxiliary aggregates. The generator is continuously mechanically connected to the respective auxiliary aggregates while the internal combustion engine is optionally connectable to the auxiliary aggregates as well as to the generator. In a first mode of operation, upon operation of the electric drive motor through the external electric power supply, the generator is separated from the internal combustion engine and the generator, supplied by the power supply, is operated as an electric motor and drives the auxiliary aggregates.
    Type: Grant
    Filed: October 19, 1994
    Date of Patent: December 10, 1996
    Assignee: J. M. Voith GmbH
    Inventor: Bernhard Wust
  • Patent number: 5582514
    Abstract: A sickleless internal gear pump with an internally toothed ring gear and a pinion meshing with the ring gear, the two fitted rotatably in a common casing. The ring gear includes radial conduits for the medium to be pumped and elements which are radially movably fitted in grooves in the tooth heads of the ring gear or pinion. The sealing elements slide on the opposing tooth head of the pinion or ring gear and include control spaces on which pressure is applied from the rear. For pressure application in the control spaces there is machined at least one control slot in the area of the pressure buildup zone, on at least one side of the part of the casing which laterally bounds the ring gear and pinion.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 10, 1996
    Assignee: J. M. Voith GmbH
    Inventors: Franz Arbogast, Peter Peiz
  • Patent number: 5579375
    Abstract: A system and method provides multiple sequential call-forwarding transfers to a sequence of C-numbers within a conventional cellular radio communications system by providing a unique identifier for each call and enabling a home location register (HLR) to coordinate and disseminate multiple calls made to the same mobile station. The HLR stores, within a subscriber database, a sequence of C-numbers on a call-forwarding priority list to which calls are to be forwarded in the event a call cannot be completed to the mobile station. Each C-number is associated with sets of unique identification numbers and time stamps. When an incoming call is received at an originating mobile switching center (MSC), a transfer-to-number request message, containing a unique number identifying the request, is transmitted from the MSC to the HLR containing the subscriber database. In response, the HLR analyzes the request, searches the C-number priority list, and transmits to the MSC, the optimum C-number for completing the call.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: November 26, 1996
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventor: Thomas Ginter
  • Patent number: 5578931
    Abstract: A method and apparatus are provided for detecting an arcing fault on a power line carrying a load current. The apparatus monitors and analyzes the load current to obtain frequency components. The analyzed load current is then compared to frequency components of an arcing fault model spectrum to determine whether an arcing fault exists on the power line. If the difference between the analyzed load current and the model spectrum is less than a selected error value, then an arcing fault exists on the power line. Otherwise, no arcing fault exists and conditions are normal on the line.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 26, 1996
    Assignee: The Texas A & M University System
    Inventors: B. Don Russell, B. Michael Aucoin
  • Patent number: 5578093
    Abstract: A method and apparatus for desulfurizing a gas and regenerating a sorbent is disclosed. The sulfur-containing feed gas which can be an effluent gas from a coal gasification reactor, for example, is desulfurized with a particulated metallic oxide sorbent in a transport riser. The sulfided sorbent is than separated from a desulfurized effluent gas and regenerated by contact with an oxygen-containing gas in a transport riser. The regenerated sorbent is separated from an SO.sub.2 containing offgas and recycled to the desulfurization step. The degree of sorbent conversion in the desulfurization step is held at a low level and the sorbent regeneration rate is increased to avoid excessive temperature rise in the regeneration step. In such manner, sorbent cooling can be substantially eliminated. The regeneration riser preferably comprises a once-through lift riser to minimize the riser transport gas requirements to just oxidant gas or oxidant gas mixed with a reduced amount of diluent gas.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 26, 1996
    Assignee: The M. W. Kellogg Company
    Inventors: William M. Campbell, Gunnar B. Henningsen
  • Patent number: 5575646
    Abstract: A support device for a dentist's drill comprising a support, an articulated arm comprising two articulated quadrilateral devices disposed in series with one another, and an adjustment device operable to vary the direction of the working axis of the drill. The support is provided with a fixing device for connecting it to a seat back of a dentist's chair and the articulated arm can assume a working condition in which the two articulated quadrilateral devices are disposed at 90.degree. to one another.
    Type: Grant
    Filed: January 12, 1995
    Date of Patent: November 19, 1996
    Assignees: Gianni M. Giannella, Francesco Giannella
    Inventor: Gianni M. Giannella
  • Patent number: 5575841
    Abstract: A cementitious material, such as concrete, contains carriers having within them an agent for improving the physical properties of the cementitious material. The agent is released from the carriers into the cementitious material at a desired time after setting by the action of an external stimulus.
    Type: Grant
    Filed: December 29, 1993
    Date of Patent: November 19, 1996
    Assignee: Carolyn M. Dry
    Inventor: Carolyn M. Dry
  • Patent number: 5577055
    Abstract: A method and a circuit device control insertion and storage of digital information in a memory and retrieval of the information from the memory. The method and circuit device ensure the digital information is correctly read out of the memory in the form of a number of coordinated bit positions, and the digital information is used to control one or several functions. The information intended to be inserted into the memory is given an address belonging to the memory. First control-sum-carrying bit positions are calculated from the bit positions of the digital information and their values coming into the memory according to a selected evaluation function. The bit positions of the digital information are stored in an address within the memory, and the first control-sum-carrying bit positions are stored in an address within a control memory.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: November 19, 1996
    Assignee: Telefonaktiebolaget L M Ericsson
    Inventor: Ewa C. Westerlund
  • Patent number: 5575950
    Abstract: Defoaming formulations for aqueous systems are produced by treating silicates such as sodium magnesium aluminosilicates with a source of aluminum to provide an aluminum content therein in the range of 0.1 to 2.5 wt. %, preferable 0.3 to 1.3 wt. %, and forming a defoaming formulation from said aluminum treated silicate by hydrophobizing with a silicone fluid, and dispersing in oil and/or water to form a defoamer formulation.
    Type: Grant
    Filed: December 6, 1994
    Date of Patent: November 19, 1996
    Assignee: J. M. Huber Corporation
    Inventor: Alvin E. Steelman
  • Patent number: 5575402
    Abstract: A tank head insulation cover comprising a plurality of generally wedge shaped panels with flanges, the panels being assembled in an overlapping manner onto the tank head so the flanges are in close relation to the perimeter of the tank. A center cap is provided to cover the area left uncovered by the panels.
    Type: Grant
    Filed: March 20, 1995
    Date of Patent: November 19, 1996
    Assignee: Carol M. Botsolas
    Inventor: Christos J. Botsolas
  • Patent number: 5576690
    Abstract: Push button controlled wireless transmitters send digitally encoded signals to a plug-in receiver/signaling device. The receiver/signaling device has a microprocessor suitably programmed to respond to signals from a transmitter bearing the discrete address of the receiver, and to decode a transmitter identification code. Thereupon the microprocessor supplies an audio output circuit with signals to simulate selectively mechanical front or back door chimes, and supplies signals to energize a strobe lamp to emit bursts of multiple flashes, the number of flashes in a burst identifying the specific transmitter, whereby a person with a hearing deficiency is informed as to which transmitter is being actuated.
    Type: Grant
    Filed: August 7, 1995
    Date of Patent: November 19, 1996
    Assignee: Fred M. Schildwachter & Sons, Inc.
    Inventors: David Waugh, Leslie M. Orloff