Patents Represented by Attorney Joseph C. MacKenzie
  • Patent number: 5604859
    Abstract: Displaying a partial array of the periodic table of elements, elements, and an icon representative of the whole table at the same time. The part of the icon corresponding to the partial array is visually distinguishable from the rest of the icon.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: February 18, 1997
    Inventor: O. Bertrand Ramsay
  • Patent number: 5265029
    Abstract: A chemical calculator providing rapid and convenient ways to retrieve information and perform calculations of chemical elements and chemical formulas obtained by direct entry from a periodic table keypad. Chemical element data, such as atomic number and mass, or calculated data (e.g. bond distance) of element pairs are displayed on an LCD or CRT screen when element keys are selected. Chemical formulas can be written when element, numerical or formulaic keys are pressed. The "Enter" command results in the display of the chemical formula's condensed formula, formula weight and percentage composition. Other function modes permit additional transformations, reaction yields and limiting reactants and empirical formula determinations.
    Type: Grant
    Filed: August 20, 1990
    Date of Patent: November 23, 1993
    Assignee: Chemical Concepts Corporation
    Inventor: O. Bertrand Ramsay
  • Patent number: 4592674
    Abstract: A manhole barrel is cast with an annular gasket in place in the barrel form. The form has a frusto-conical pallet section grooved for receiving the gasket. Anchors protruding from the gasket become embedded in concrete when the latter is introduced into the form.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: June 3, 1986
    Inventor: Michael G. Baliva
  • Patent number: 4557376
    Abstract: A two-piece, two chamber self-activating capsule having mercury in one chamber and metal powder in the other. In use, the capsule is shaken and the resulting force due to the inertia of the mercury forces its way through a normally-closed valve into the metal powder chamber, whereby the metal powder and mercury become triturated by the shaking and form dental amalgam for filling teeth. A pestle may be included to facilitate mingling and triturating the amalgam components.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: December 10, 1985
    Assignee: Sybron Corporation
    Inventors: Robert L. Probst, William A. Groves
  • Patent number: 4504733
    Abstract: An electrically-heated dry bath wherein a metal block having receptacles for receiving test tubes or the like has resistor heaters fixed thereto and a thermistor temperature sensor therein. A control circuit is provided which connects and disconnects electrical current to and from said heaters in response to the temperature sensor. The control current is fedback such as to eliminate a factor J(S) from the overall transfer function of the circuit, J(S) being a transfer function expressing how various thermal time constants in the bath would, unless neutralized, make the effective time constant of the controlled system deviate from the ideal on-off transfer function.
    Type: Grant
    Filed: May 15, 1984
    Date of Patent: March 12, 1985
    Assignee: Sybron Corporation
    Inventor: William J. Walsh
  • Patent number: 4473884
    Abstract: A portable medication dispensing unit has several compartments for storing pills or other forms of medicine. The dispensing unit is programmed with a medication schedule which causes visual and audio signals when it is time for the medication to be consumed. The medication schedule is optimized to accommodate the user's personal habits and to simplify taking two or more medicines. The programming means may be integral with the dispensing unit or a separate unit.
    Type: Grant
    Filed: January 8, 1982
    Date of Patent: September 25, 1984
    Assignee: Sybron Corporation
    Inventor: Robert S. Behl
  • Patent number: 4445789
    Abstract: The circular crystal of a temperature indicating instrument has a circular flange rotatable in a channel in the instruments' casing. Fingers on the casing have teeth which mesh with teeth on the flange. The fingers yieldably hold the crystal in place but the crystal can be forcibly rotated.The crystal has a slotted post thereon and on said post is a bimetallic spiral coil the inner end of which is in the post's slot. Another post in the casing covers the slot to keep the coil in place on the former post.On the back of the casing is a supporting bracket adjustable to several positions.
    Type: Grant
    Filed: May 28, 1982
    Date of Patent: May 1, 1984
    Assignee: Sybron Corporation
    Inventors: Edward L. Peart, Charlie J. Howard
  • Patent number: 4408247
    Abstract: A circuit protects a high voltage supply for x-ray tubes from the damaging effects of a tube flashover or the like. The circuit monitors line current, and high voltage and reacts to an increase in line current occurring with a corresponding drop in high voltage to turn off the high voltage.
    Type: Grant
    Filed: September 10, 1980
    Date of Patent: October 4, 1983
    Assignee: Sybron Corporation
    Inventor: David Cowell
  • Patent number: 4388572
    Abstract: An electric motor is supplied a voltage from a control circuit. The control circuit is powered by an AC to DC rectifier having a shunt capacity. An increase in motor load will result in lower speed and an increase in current. This causes an increase in AC ripple across the shunt capacitor. The control circuit is responsive to the AC ripple and increases voltage to the motor so that the speed set before the application of load is again attained.
    Type: Grant
    Filed: May 15, 1980
    Date of Patent: June 14, 1983
    Assignee: Sybron Corporation
    Inventor: Wolfgang Rosenfeldt
  • Patent number: 4333811
    Abstract: A device for monitoring a component in a fluid mixture includes a tube 1, the bore of which is divided into two chambers by a disc of solid electrolyte 1a. The electrolyte is chosen to have a conducting ion related to the component to be measured. Suspension device in the form of two resilient diaphragms 7 suspend the tube within a housing including a frame member 16 and end caps 15. Each of the diaphragms is sealed at its interface 9 with the housing, and at its interface 6 with an end of the tube. Heater 10, 11 are provided to alter the temperature of the component in each chamber and inlet 21 and outlet 22 allow fluid to enter and leave the chambers.The e.m.f. between electrodes 2 is monitored and information about the fluid mixture can be obtained depending on the temperature of the mixture sensed by a thermocouple arrangement 3.
    Type: Grant
    Filed: June 20, 1980
    Date of Patent: June 8, 1982
    Assignee: Sybron Corporation
    Inventors: Riad M. A. Kocache, Danny F. Holman
  • Patent number: 4291280
    Abstract: A conductive object detector having an eddy current killed oscillator, wherein the oscillator output is stabilized by means of a proportional plus integral controller. The controller proportional gain is set low and the integral time long, hence a conductive object near the oscillator will "kill" it, whereas the controller will minimize the effect of temperature or aging on the oscillator output.
    Type: Grant
    Filed: November 15, 1978
    Date of Patent: September 22, 1981
    Assignee: Sybron Corporation
    Inventor: George A. Gardner
  • Patent number: 4275767
    Abstract: A fluid resistor with a fluid tight structure including two planar members having a surface of each contacting in close proximity. One of the planar members has a laminated structure including a substrate and at least one thin layer of substantially uniform thickness formed on the substrate. A groove extends through the layer. The groove and the surface of the other planar member define a capilliary passageway of substantially constant depth for restricted fluid flow.
    Type: Grant
    Filed: October 27, 1976
    Date of Patent: June 30, 1981
    Assignee: Sybron Corporation
    Inventor: Norman R. Westfall
  • Patent number: 4262248
    Abstract: An electronic circuitry servicing system having an operations manual setting forth servicing procedures such as function checking, troubleshooting, and calibration, a template fitting on the circuit being serviced and providing probe access to test points of the surface and graphic information about the circuit and a test fixture for coordinating test signals and measurements.
    Type: Grant
    Filed: November 8, 1978
    Date of Patent: April 14, 1981
    Assignee: Sybron Corporation
    Inventors: Joseph Vincelli, Donald P. Persons
  • Patent number: 4261201
    Abstract: A wind-chill indicator including a rotameter, a thermometer, and wind chill chart arranged such that the rotameter float's position indicates the chart value expressing the "wind-chill" effect corresponding to the existing velocity and temperature of the wind.
    Type: Grant
    Filed: August 2, 1979
    Date of Patent: April 14, 1981
    Assignee: Sybron Corporation
    Inventor: Charlie J. Howard
  • Patent number: 4254470
    Abstract: Interpolating apparatus is provided for more accurately determining the peak position of a function, particularly a cross-correlation function derived from two related flow signals fed to an overloading counter correlation flowmeter, whereby the peak position is indicated by a set of signals corresponding to quantized values of a parameter and the apparatus interpolates the peak position from selected signals of the set. The preferred method of operation comprises computing for each of the signals an average of the quantized values of the parameter corresponding to that signal, and summing a predetermined number of these average values to obtain an indication of an interpolated value of the peak position. Various output circuits are provided for flowmeter applications to produce an output which is proportional to flow rate.
    Type: Grant
    Filed: August 22, 1978
    Date of Patent: March 3, 1981
    Assignee: Sybron Corporation
    Inventor: James R. Jordan
  • Patent number: 4237739
    Abstract: A flow metering assembly has a one-piece rigid body having a cylindrical bore with a segmental wedge therein, and a differential pressure transmitter, or the like, clamped thereto to receive the pressures developed on either side of the wedge in response to flow. The bore and wedge have a sliding fit with each other, the wedge is releasably fixed in place in the bore, and the assembly is inserted in a pipe line through which flows a fluid which is to be measured, such as fuel oil.
    Type: Grant
    Filed: March 1, 1979
    Date of Patent: December 9, 1980
    Assignee: Sybron Corporation
    Inventors: Raymond E. Owen, William B. Brosius, Jr.
  • Patent number: 4238308
    Abstract: An oxygen sensor having a solid electrolyte tube and partition. A heater is tightly wound along the length of the tube, which is divided into two equal chambers by the partition, and thermocouples are fixed to either side of the partition by layers of metallic particles. An insulating case and flame trap may be provided for the sensor.
    Type: Grant
    Filed: September 25, 1978
    Date of Patent: December 9, 1980
    Assignee: Sybron Corporation
    Inventors: Riad M. A. Kocache, Danny F. Holman, Ronald H. Sunderland
  • Patent number: 4228509
    Abstract: A system for regulating and optimizing process conditions, such as octane number, aniline point or density of reformed hydrocarbons, by manipulating various process variables in order to control the process, both in accordance with a regulatory effect, namely, such as to cause the process to achieve and maintain the desired setpoint and setpoints for the process condition or conditions, and in accordance with an optimizing effect, namely, such as to cause the process to achieve some predetermined state defined as optimum. The effects are not necessarily consistent, but relative weights are assigned to the two effects such that the regulating effect is paramount until the process condition or conditions are substantially at setpoint or setpoints, at which time the regulating effect is minimum, thus allowing the optimizing effect to influence the process.
    Type: Grant
    Filed: April 7, 1977
    Date of Patent: October 14, 1980
    Inventor: James P. Kennedy
  • Patent number: D260497
    Type: Grant
    Filed: August 20, 1979
    Date of Patent: September 1, 1981
    Assignee: Sybron Corporation
    Inventors: Charlie J. Howard, Edward L. Peart
  • Patent number: D283539
    Type: Grant
    Filed: February 10, 1983
    Date of Patent: April 22, 1986
    Assignee: Sybron Corporation
    Inventor: Emerson J. Purkapile