Patents by Inventor Theodore R. Lapp

Theodore R. Lapp has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6515283
    Abstract: A process and system for flame detection includes a microprocessor-controlled detector with an array of sensors for sensing radiant energy from a fire or other heat source. A wide band infrared sensor is used as the primary detector, with near band and visible band sensors serving to detect false-alarm energy from non-fire sources. A narrow band sensor, such as a 4.3-micron sensor, may also be employed in the sensor array, and assists in the detection of hydrocarbon fires. Digital signal processing is used to analyze sensed data and discriminate against false alarms. A modulation index of one of the sensors (preferably the wideband IR sensor) is calculated by the microprocessor using measurements of the signal extremes (i.e., maxima and minima). A fire situation is not declared unless the modulation index falls within a prespecified range, such as between 5% and 85%. A multistage alarm system can be provided, which is selectively triggered by the microprocessor.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: February 4, 2003
    Assignee: Fire Sentry Corporation
    Inventors: David A. Castleman, Owen D. Parham, Theodore R. Lapp
  • Patent number: 6046452
    Abstract: The present invention provides a highly sensitive, intelligent, reliable, and effective process and system for detecting fire, which may be used in any industrial or other environment. The process and system for flame detection in accordance with the present invention features wide infrared spectrum sensitivity, which facilitates increased sensitivity to any sign of a flame or fire. The process and system of the present invention utilizes digital processing and analysis of data, calibration of operation parameters from temperture data, an intelligent controller (microprocessor) for discriminating against false alarms, and an elaborate multi-stage alarm system, selectively triggered by the controller.
    Type: Grant
    Filed: July 31, 1996
    Date of Patent: April 4, 2000
    Assignee: Fire Sentry Systems, Inc.
    Inventors: David A. Castleman, Chris A. Selstad, Theodore R. Lapp
  • Patent number: 5357967
    Abstract: A system for measuring fluid flow within a conduit, such as blood flow from the heart, includes a heating element that is driven so as to apply heat to the fluid at an upstream position as a series of periodic heat signals. A temperature sensor located downstream measures a local temperature of the fluid and generates an electrical fluid temperature signal corresponding to the local temperature. This signal is then applied to a dispersive filter, which outputs a pulse-like signal in the presence of each periodic heat signal. Fluid flow is then calculated by a processor as a function of the area under an estimated impulse response curve for the channel in which the fluid flows. Each periodic heat signal is preferably sinusoidal and has an instantaneous frequency that varies substantially continuously between a first frequency and a second frequency over a pre-determined active input signal period.
    Type: Grant
    Filed: June 4, 1993
    Date of Patent: October 25, 1994
    Assignee: Baxter International Inc.
    Inventors: Robert Dixon, Theodore R. Lapp, Donald E. Bobo, Jr.
  • Patent number: 4979940
    Abstract: An infusion system includes fluid-delivery components for delivering a fluid from a separate source of the fluid into a patient, transducer components for producing a signal related to the pressure of the fluid in the fluid-delivery components, and identification components responsive to the signal for identifying pressure artifacts characteristic of patient activity. Gravity-fed infusion may be employed as well as infusion with a flow control device, and identification may be accomplished with a microprocessor for examining the waveform of the signal and identifying pressure artifacts characteristic of patient activity amidst pressure changes caused by fluid-delivery components so that site checking can be conducted during quiet periods, i.e., times of little patient acitivity.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: December 25, 1990
    Assignee: Baxter International Inc.
    Inventors: Donald E. Bobo, Jr., Edward F. Meier, Dennis R. Seguine, Theodore R. Lapp
  • Patent number: 4916642
    Abstract: An environmental control system for use in a greenhouse or another structure which requires the control of an ambient condition regulating element in response to a plurality of sensed parameters. The system includes a plurality of sensor elements and actuator elements, which communicate with a central control through communication interface units. In an illustrated embodiment the interface units communicate over previously installed AC power lines by frequency shift keyed signals. The central control unit maintains a protocol where, in response to operator inputs, addreses are assigned to different peripheral control elements to configure the system. The system is configured by assigning sets of equipment to separate zones of the structure which are individually controlled. All peripheral control elements are addressed in one zone before sequencing to control the next zone.
    Type: Grant
    Filed: January 14, 1987
    Date of Patent: April 10, 1990
    Assignee: O-Com, Inc.
    Inventors: Frederick P. Kaiser, Theodore R. Lapp
  • Patent number: 4846792
    Abstract: An infusion system for infusing a fluid into a patient comprising an infusion device for delivering the fluid in both a normal delivery pattern and a test pulse and a conduit for conducting the fluid from the infusion device to the patient. The test pulse creates a pressure wave response in the conduit. Abnormal infusion can be detected by determining the area between a baseline and at least a portion of a pressure versus time curve representing the pressure wave response.
    Type: Grant
    Filed: March 8, 1988
    Date of Patent: July 11, 1989
    Assignee: Baxter International Inc.
    Inventors: Donald E. Bobo, Jr., Dennis R. Seguine, Theodore R. Lapp
  • Patent number: 4742475
    Abstract: An environmental control system for use in a greenhouse or another structure which requires the control of an ambient condition regulating element in response to a plurality of sensed parameters. The system includes a plurality of sensor elements and actuator elements, which communicate with a central control through communication interface units. In an illustrated embodiment the interface units communicate over previously installed AC power lines by frequency shift keyed signals. The interface units communicate to the peripheral control elements and the central control unit through serial digital signals. The central control maintains a protocol where, in response to operator inputs, time slots are assigned to different peripheral control elements to configure the system. Each peripheral control element is thereby addressed during its time slot and a sensor responds with data corresponding to a sensed parameter and an actuator executes a command.
    Type: Grant
    Filed: September 26, 1984
    Date of Patent: May 3, 1988
    Assignee: IBG International, Inc.
    Inventors: Frederick P. Kaiser, Theodore R. Lapp
  • Patent number: 4654821
    Abstract: An automatic loading apparatus for a processing system for restarting an application program upon sensing a software failure. The application program periodically executes at least one portion of a reset code which addresses a peripheral device controller. The peripheral device controller times the frequency of the access by the processing system to determine whether the application program is executing successfully. If the application program does not access the peripheral control device within the normal period of execution for the reset code then this is an indication of a failure of the software to execute in the right sequence or a halt to the processing of the application program. Upon a failure indication, the peripheral control device disconnects power to the processing system and then reconnects power to enable an auto-boot to reload the application program and restart the software execution.
    Type: Grant
    Filed: September 26, 1984
    Date of Patent: March 31, 1987
    Assignee: Q-COM, Inc,
    Inventor: Theodore R. Lapp
  • Patent number: 4527247
    Abstract: An environmental control system for use in greenhouses or other structures requiring the control of a temperature regulating element in response to sensed temperatures. The environmental control system includes a plurality of sensor elements and actuator elements comprising peripheral control elements each of which communicate bidirectionally with individual communication interface units. A central control processor bidirectionally communicates with another communication interface unit. All of the interface units bidirectionally communicate with each other over fixed AC power lines by frequency shift keying the information onto and from the lines. The control processor receives operator inputs which cause it to assign time slots to different peripheral control elements to configure the system whereby each peripheral control element can be interrogated by addressing it during its time slot.
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: July 2, 1985
    Assignee: IBG International, Inc.
    Inventors: Fredrick P. Kaiser, Theodore R. Lapp