Patents by Inventor Robert E. Krocker

Robert E. Krocker 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: 7383158
    Abstract: A system for servicing a computer controlled machine comprising: a computer controlled machine including a device operable to perform a function, a controller controlling the operation of that device, and a data access port for transferring data and commands from the controller; and a service tool operably connected to the data access port, the service tool including a remote communications capability, a computer, and diagnostics and graphing software; and an expert observer system operably linked to the remote communications capability of the service tool and including historical machine data, machine sales information, software revisions for the controller, additional diagnostics software, and an expert observer capable of providing a mentor capability to the operator of a service tool.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: June 3, 2008
    Assignee: Trane International Inc.
    Inventors: Robert E. Krocker, Terence D. Baier, Merle A. Renaud, Paul C. Rentmeester, Robert M. Swanson, Patrick J. Wilson, Kirk W. Johnson
  • Publication number: 20030195640
    Abstract: A system for servicing a computer controlled machine comprising: a computer controlled machine including a device operable to perform a function, a controller controlling the operation of that device, and a data access port for transferring data and commands from the controller; and a service tool operably connected to the data access port, the service tool including a remote communications capability, a computer, and diagnostics and graphing software; and an expert observer system operably linked to the remote communications capability of the service tool and including historical machine data, machine sales information, software revisions for the controller, additional diagnostics software, and an expert observer capable of providing a mentor capability to the operator of a service tool.
    Type: Application
    Filed: April 16, 2002
    Publication date: October 16, 2003
    Inventors: Robert E. Krocker, Terence D. Baier, Merle A. Renaud, Paul C. Rentmeester, Robert M. Swanson, Patrick J. Wilson, Kirk W. Johnson
  • Patent number: 5027608
    Abstract: The determination as to whether an operational compressor in a multiple-screw compressor water chiller is fully loaded is made by sending a relatively long duration test pulse to the load solenoid of the compressor. If the compressor is fully loaded, no measurable change in the current drawn by the compressor motor will be measured since no slide valve movement will have occurred and no additional load will have been placed on the compressor. If, however, the compressor is not fully loaded at the time the test pulse is sent, the compressor slide valve will move to load the compressor to an extent such that a reliably measurable change in compressor motor current draw occurs.
    Type: Grant
    Filed: April 20, 1990
    Date of Patent: July 2, 1991
    Assignee: American Standard Inc.
    Inventors: Paul C. Rentmeester, Michael W. Murry, Robert E. Krocker, Thomas J. Clanin
  • Patent number: 4751653
    Abstract: A microcomputer based fault detector for identifying a phase reversal, a phase loss, and a power loss in three-phase circuits. A microcomputer samples a pattern of timing signals generated in response to three current transformers associated with each of the three phases. The changing pattern of timing signals represent the phase relationship of each of the three phases. The sampling rate of the microcomputer is synchronized to the alternating current in each of the three phases by an interrupt signal indirectly generated by one of the phases. In the absence of current in this interrupt generating phase, a backup interrupt, internal to the microcomputer, is enabled which directs the microcomputer to determine if the absence of the first interrupt is due to a phase loss or a power loss. Either interrupt prompts the microcomputer to sample the pattern of signals and compare it to a predetermined pattern.
    Type: Grant
    Filed: August 25, 1986
    Date of Patent: June 14, 1988
    Assignee: American Standard Inc.
    Inventors: Brian S. Junk, Robert E. Krocker, Tony J. Wood
  • Patent number: 4446913
    Abstract: A thermostat used to control a temperature conditioning system to heat or cool a comfort zone to a heating setpoint and a cooling setpoint. The thermostat is microcomputer based and includes both a digital keypad and display for setpoint entry by an operator. Control means in the thermostat automatically insure that at least a predetermined minimum offset is maintained between the heating and cooling setpoints stored in memory, and the control means are further operative to adjust one of the setpoints if the operator enters a value for the other setpoint that is in error.
    Type: Grant
    Filed: July 5, 1983
    Date of Patent: May 8, 1984
    Assignee: The Trane Company
    Inventor: Robert E. Krocker
  • Patent number: 4406133
    Abstract: A control and method for defrosting the outdoor heat exchanger of an air source heat pump. A defrost cycle is initiated when ice and frost have accumulated on the outdoor heat exchanger sufficiently such that, as a function of the indoor temperature of a comfort zone, the maximum permissible heat transfer degradation at which the efficiency and reliability of the temperature conditioning system are optimized, has occurred. Heat transfer degradation is determined from the outdoor ambient air temperature and the temperature of either the outdoor heat exchanger, or the compressor suction line. If the temperature of the outdoor heat exchanger or the suction line is less than a predetermined value, a deferred defrost cycle is initiated wherein the defrost cycle starts after a fixed time interval has elapsed.
    Type: Grant
    Filed: February 25, 1982
    Date of Patent: September 27, 1983
    Assignee: The Trane Company
    Inventors: James F. Saunders, Robert E. Krocker
  • Patent number: 4353409
    Abstract: Apparatus and method for controlling a temperature conditioning system in which a plurality of stages of temperature conditioning apparatus may be selectively energized to meet a temperature conditioning demand in a comfort zone into which the flow of temperature conditioned air is varied in response to temperature therein. Control means are operative to determine the differential temperature of the return air and the supply air and to energize and de-energize stages of temperature conditioning in response thereto. Means are provided to measure the outdoor ambient temperature, thereby enabling the control means to determine the heating capacity of an ambient air source heat pump relative to the outdoor ambient air temperature, and to energize and de-energize heating stages as appropriate, to meet heating demand.
    Type: Grant
    Filed: December 26, 1979
    Date of Patent: October 12, 1982
    Assignee: The Trane Company
    Inventors: James F. Saunders, Robert E. Krocker
  • Patent number: 4338790
    Abstract: A control and method for defrosting the outdoor heat exchanger of an air source heat pump. A defrost cycle is initiated when ice and frost have accumulated on the outdoor heat exchanger sufficiently such that, as a function of the indoor temperature of a comfort zone, the maximum permissible heat transfer degradation at which the efficiency and reliability of the temperature conditioning system are optimized, has occurred. Heat transfer degradation is determined from the outdoor ambient air temperature and the temperature of either the outdoor heat exchanger, or the compressor suction line. If the temperature of the outdoor heat exchanger or the suction line is less than a predetermined value, a deferred defrost cycle is initiated wherein the defrost cycle starts after a fixed time interval has elapsed.
    Type: Grant
    Filed: February 21, 1980
    Date of Patent: July 13, 1982
    Assignee: The Trane Company
    Inventors: James F. Saunders, Robert E. Krocker
  • Patent number: 4307775
    Abstract: Apparatus and method for controlling one or more electrically powered devices. A control for a temperature conditioning system is shown which is operative to monitor the electrical current supplied to component devices, i.e., compressors, auxiliary heating elements, indoor fan, and outdoor fan; and to cause an indicator means to indicate that one or more of the devices has failed to operate in a manner consistent with the controlled status of the system. If a failure is detected, control means are operative to lock out one or more of the devices from operation.
    Type: Grant
    Filed: November 19, 1979
    Date of Patent: December 29, 1981
    Assignee: The Trane Company
    Inventors: James F. Saunders, Robert E. Krocker
  • Patent number: 4266599
    Abstract: Method and apparatus are disclosed for controlling and selectively setting back the comfort condition, such as temperature, within a conditioned zone utilizing a system which includes both preferred and back-up conditioning means, the former exhibiting more favorable energy consumption characteristics than the latter. The system is operable in both a normal mode, and in an economy mode during which the comfort condition is permitted to degrade toward an economy level during a setback period of predetermined duration. Selective operation of the preferred and back-up conditioning means is effected in order to minimize energy consumption during both modes and especially during the time that the comfort condition is restored to the normal level from the economy level. In a preferred embodiment, the preferred conditioning means comprise an electrically operated heat pump of the vapor compression type and the back-up conditioning means comprise electrical resistance-type heating means.
    Type: Grant
    Filed: November 17, 1978
    Date of Patent: May 12, 1981
    Assignee: The Trane Company
    Inventors: James F. Saunders, Robert E. Krocker