Patents Represented by Attorney Alfred N. Feldman

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  • Burner ignition and flame monitoring system
    Patent number: 4405299
    Abstract: A fuel burner ignition system using a hot surface ignitor means as both an ignition element and as one element of a flame rectification sensor. The hot surface ignitor means ignites fuel issuing from a fuel burner, and also acts as the flame rod or sensing means of a flame detecting system.
    Type: Grant
    Filed: July 24, 1981
    Date of Patent: September 20, 1983
    Assignee: Honeywell Inc.
    Inventor: Stephen L. Serber
  • Electronic temperature control from a mechanical temperature responsive means
    Patent number: 4405080
    Abstract: By means of a moveable insulating member that has two electrically conductive areas that are separated by a nonconductive area it is possible to build a mechanically controlled electronic thermostat. The temperature sensing is accomplished by a temperature responsive means that moves generally parallel to the conductive area, and functions as a pair of differentially energized variable capacitors that drive an electronic circuit when any unbalance occurs. This unbalance is indicative of a disagreement of the set temperature with the control temperature.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: September 20, 1983
    Assignee: Honeywell, Inc.
    Inventor: Arlon D. Kompelien
  • Electronic thermostat with protected circuitry
    Patent number: 4394708
    Abstract: An electronic thermostat is provided with a mounting arrangement between the base means and the cover means that fully protects the electronic components within from both physical and electrical damage during the normal handling of the thermostat. The protection is accomplished by recessing the contact points for the circuitry within openings that can be reached only by mating electrical contacts.
    Type: Grant
    Filed: May 6, 1981
    Date of Patent: July 19, 1983
    Assignee: Honeywell Inc.
    Inventor: Donald J. Kasprzyk
  • Electric thermostat with adjusting knob
    Patent number: 4390859
    Abstract: An electric thermostat having a knob and potentiometer means with a simple adjusting means to couple the two together. A single clip means made of a resilient material allows for connecting the knob to the potentiometer and allows for repositioning the knob at will during calibration of the thermostat.
    Type: Grant
    Filed: April 9, 1981
    Date of Patent: June 28, 1983
    Assignee: Honeywell, Inc.
    Inventors: Donald J. Kasprzyk, David A. Margenau, Marvin D. Nelson
  • Multistage thermostat using multirate integral action and exponential setpoint change
    Patent number: 4387763
    Abstract: A multistage thermostat means that is adapted for use with equipment such as a heat pump and auxiliary heat and which effects efficient operation upon a temperature setup after a nigh setback function by introducing an exponential change in the apparent control setpoint. The sensitivity of the signal processing channel of the system is altered to maintain stability. The system further contains a power-up reset function that also alters the signal processing channel for rapid reestablishment of normal control.
    Type: Grant
    Filed: September 14, 1981
    Date of Patent: June 14, 1983
    Assignee: Honeywell Inc.
    Inventor: Ronald Benton
  • Fail safe digital fuel ignition system
    Patent number: 4384845
    Abstract: A fuel burner control system that is fail safe and which controls three fuel burner functions is provided for. The system utilizes two different digital clock means that are separated in time from one another to ensure separate gating of the fuel burner output functions. The system further uses a negative power supply with respect to the circuit ground for control purposes while energizing the output switch means with a positive potential thereby eliminating inadvertent operation in the event of circuit component failures.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: May 24, 1983
    Assignee: Honeywell Inc.
    Inventors: Brian J. Hinton, William M. Papic
  • Safe start fuel burner control system
    Patent number: 4382770
    Abstract: An intermittent gas pilot system utilizing a flame signal simulating circuit means provides for both dynamic as well as static safe start checking for the system. A simulated flame signal is provided so that the relays contained within the system must be checked dynamically before the system will allow the opening of the main gas valve.
    Type: Grant
    Filed: October 22, 1980
    Date of Patent: May 10, 1983
    Assignee: Honeywell Inc.
    Inventor: B. Hubert Pinckaers
  • Bilevel flame signal sensing circuit
    Patent number: 4375951
    Abstract: A fuel burner control system that has a fail safe mode of operation utilizes a flame sensing means that controls two separate signal processing circuits that have two different threshold levels of operation. Each of the signal processing circuits controls a separate switch means and these switch means are interrelated to ensure that a pilot valve and main valve are opened in sequence and that a pilot flame is properly burning before the main valve is opened. If the flame sensing means for the device senses any abnormality, the interrelationship of the output circuits prevents the main valve from opening.
    Type: Grant
    Filed: August 18, 1980
    Date of Patent: March 8, 1983
    Assignee: Honeywell Inc.
    Inventor: John E. Bohan, Jr.
  • Dynamic contact checking circuit
    Patent number: 4376277
    Abstract: A fail safe type of monitoring circuit for contacts is provided using an opto-isolator. The opto-isolator is energized in response to the operation of the contacts to clearly indicate whether the contacts are open or closed, and whether the circuit components are functioning in a valid manner.
    Type: Grant
    Filed: October 17, 1980
    Date of Patent: March 8, 1983
    Assignee: Honeywell Inc.
    Inventor: Robert A. Black, Jr.
  • Condition control system for efficient transfer of energy to and from a working fluid
    Patent number: 4373663
    Abstract: A condition control system adapted to supply a working fluid that has been modified by transferring energy to or from the working fluid is disclosed wherein a minimum energy loss is accomplished in operating the control system. The control system adjusts the setpoint of the system in response to parameters measured around the system and further provides for a minimum on/off cycling of the system in the event that the system is applied to a device which alters the working fluid between a fixed lower rate and an upper rate as would be typical in a burner-boiler configuration.
    Type: Grant
    Filed: December 10, 1981
    Date of Patent: February 15, 1983
    Assignee: Honeywell Inc.
    Inventor: Jeffrey M. Hammer
  • Timer and control circuit
    Patent number: 4373898
    Abstract: A timer and control circuit using a field effect transistor that is operated in three different current carrying conditions or operating modes is disclosed. The three operating modes are used to establish two successive timed intervals for a prepurge and a trial for ignition for a fuel burner.
    Type: Grant
    Filed: March 13, 1981
    Date of Patent: February 15, 1983
    Assignee: Honeywell Inc.
    Inventor: John E. Bohan, Jr.
  • Fail safe digital timer
    Patent number: 4373201
    Abstract: A fail safe digital timer is provided by having a pair of similar counters counting the output of a single clock means. The clock means provides clock pulses and complimentary clock pulses to the two counters and the outputs of the counters are compared. If the two counters are properly operating the comparison will provide a continuous stream of pulses at a frequency equal to the frequency of the clock means for the timer. The failure of any of the components in the system cause the output of the comparator means to either become a constant logic 1 or a constant logic 0.
    Type: Grant
    Filed: November 28, 1980
    Date of Patent: February 8, 1983
    Assignee: Honeywell Inc.
    Inventor: John E. Bohan, Jr.
  • Electronic condition control system using digital anticipation
    Patent number: 4366534
    Abstract: A condition control system utilizing digital anticipation involving periodically filling a counter from a relatively high frequency source in response to a first frequency signal. The relatively high frequency signal is fed in a controlled manner into an anticipation cycle counting means to provide for digital anticipation in a condition control system. The system has been specifically disclosed as a temperature control system or thermostat. The system also provides for a bypass means to reset the system when a set point change has been made. A degulping circuit has been provided to eliminate instability at very high and very low loads.
    Type: Grant
    Filed: July 30, 1980
    Date of Patent: December 28, 1982
    Assignee: Honeywell, Inc.
    Inventor: Arlon D. Kompelien
  • Single probe low water control
    Patent number: 4360738
    Abstract: A timer means having a time delay on reapplication of control allows a single probe low water cutoff and feedwater makeup device to function. The time delay preventing reapplication of power to a burner while simultaneously causing a feedwater mechanism to add water to a boiler provides safe operation of the boiler without oscillations caused by momentary losses of water.
    Type: Grant
    Filed: May 4, 1981
    Date of Patent: November 23, 1982
    Assignee: Honeywell Inc.
    Inventor: James I. Bartels
  • Conductive fluid probe powering means
    Patent number: 4356406
    Abstract: A conductive fluid probe, one particularly used in sensing a boiler water, is operated with pulsed energy from the charging and discharging of a capacitor. The charging is allowed to occur in a normal resistance-capacitor manner, while the discharge is rapidly accomplished. The energy of both halves of the charge and discharge cycle are substantially the same even though the magnitudes of peak voltages are substantially different thereby operating the probe with a minimum of electrolysis and a maximum cleaning action.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: October 26, 1982
    Assignee: Honeywell Inc.
    Inventor: James I. Bartels
  • High voltage ignition transformer
    Patent number: 4352079
    Abstract: A high voltage transformer is formed by a unitary core mounting a primary winding being inserted in a cavity of a bobbin that mounts the secondary winding. The secondary winding is placed in alternate bays of a multibay structure to isolate the windings from one another to avoid high potential breakdown. The assembly is complete by the mounting of the core within the cavity of the bobbin, but can be supplemented by covering the entire unit with a protective housing that further aids in mounting the transformer to an insulating surface, such as a printed wiring board.
    Type: Grant
    Filed: July 24, 1981
    Date of Patent: September 28, 1982
    Assignee: Honeywell Inc.
    Inventors: Dale A. Mueller, Timothy P. Sperry
  • Multistage thermostat using integral initiation change means
    Patent number: 4332352
    Abstract: A multistage thermostat is operated by comparing the thermostat setpoint and the sensed temperature over a continuous series of discrete intervals of time. When a sudden change occurs between the sensed temperature and the setpoint, the magnitude of this change is evaluated in a comparator means and if necessary the system is reset to compensate for the change to operate in the most efficient manner. The adjustment of a constant supplied to an integrating circuit that forms part of a signal processing circuit means for the thermostat means provides the adjustment when the predetermined level of change is made.
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: June 1, 1982
    Assignee: Honeywell Inc.
    Inventor: Thomas S. Jaeger
  • Relaxation oscillator type spark generator
    Patent number: 4329628
    Abstract: A spark generator of the relaxation oscillator type operates on only one half of the cycle of the applied alternating current. By providing a gating circuit that triggers through a threshold switch means from a capacitor charge, it is possible to fire a silicon controlled rectifier on the same half cycle as the charging of an energy storage capacitor. The circuit can be operated by means of a diode and switch, or by an asymmetric current conducting element such as a silicon controlled rectifier.
    Type: Grant
    Filed: July 31, 1980
    Date of Patent: May 11, 1982
    Assignee: Honeywell Inc.
    Inventor: John E. Bohan, Jr.
  • Two-wire condition control circuit means
    Patent number: 4328528
    Abstract: A condition control device has been shown as a thermostat that not only controls, but draws power from the same two conductors. The drawing of power from the control conductors is accomplished by momentarily opening the control circuit and allowing a charge to be stored on an energy storage means. The control of the operation of the switching relies on a voltage controlled oscillator that is synchronized to the line frequency during the slight period of time that the solid state load switch means that controls the load is deenergized.
    Type: Grant
    Filed: December 8, 1980
    Date of Patent: May 4, 1982
    Assignee: Honeywell Inc.
    Inventor: Arlon D. Kompelien
  • Selective ultraviolet signal amplifier circuit
    Patent number: 4328527
    Abstract: A flame detection circuit means that is responsive to an ultraviolet responsive tube is provided with a safety circuit. The safety circuit encompasses a pulse responsive circuit that is responsive to the characteristic conduction pattern of an ultraviolet responsive type of tube and will not respond to a shunt resistance. The circuit relies on the normal conductivity of a shorting field effect transistor that must be gated into a nonconductive state for an output means to be activated.
    Type: Grant
    Filed: October 23, 1980
    Date of Patent: May 4, 1982
    Assignee: Honeywell Inc.
    Inventor: William R. Landis