Patents by Inventor George A. Ellson

George A. Ellson 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: 5019717
    Abstract: A computer-controlled, uninterruptable power supply system is disclosed. The system selectively operates from more than one input source of power, e.g., an AC input, an external DC input and internal batteries. The system is of the type which utilizes one or more switch mode converters and is especially suited for use in computer systems. The system monitors a number of functions under computer control and reacts automatically to the monitored functions to follow a programmed course of action. During start up, the system monitors prescribed functions and prevents power turn-on upon detection of prescribed faults. The system may communicate with a host computer, provide data thereto, and receive down-loaded parameters therefrom. Such down-loaded parameters may be used by the system to control operation of the system.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: May 28, 1991
    Assignee: Elegant Design Solutions Inc.
    Inventors: Patrick W. McCurry, James R. Kellogg, Karl Boekelheide, Kenneth D. Sexton, George A. Ellson, Robert A. Hocker
  • Patent number: 4947163
    Abstract: A key for an electronic lock system is provided with circuitry capable of performing a plurality of lock-related functions. Stored in the key is characterization data that determines the key's particular functionality be electronically disabling certain ones of these functions, leaving just a subset of functions from which the operator may select. Keys having various capabilities can thus be electronically tailored from a single master design.
    Type: Grant
    Filed: September 11, 1989
    Date of Patent: August 7, 1990
    Assignee: Supra Products, Inc.
    Inventors: Walter G. Henderson, John Q. Archer, II, Gerald R. Daum, George A. Ellson, John E. Gray, Wayne F. Larson, Rockne M. Olds, Jerry P. Scansen, John W. Sherman, Edgar J. Urein
  • Patent number: 4929880
    Abstract: A battery powered electronic lock system includes a battery monitoring feature that detects three states of the lock system battery. These states correspond to three progressively weaker states of the battery. When the battery is in the first state, the lock system operates in normal fashion. When the battery is in the second state, an indicator informs the user, but operation of the lock system otherwise continues in substantially normal fashion. When the battery is in the third state, normal lock operation is curtailed and the remaining battery energy is reserved for the purpose of opening the lock for specially authorized keys.
    Type: Grant
    Filed: December 27, 1988
    Date of Patent: May 29, 1990
    Assignee: Supra Products, Inc.
    Inventors: Walter G. Henderson, George A. Ellson, Edgar J. Unrein
  • Patent number: 4914732
    Abstract: An electronic key for an electronic lock system is provided with graphical user interface which can display a plurality of symbols corresponding to a plurality of functions that the key can cause the lock to execute. An operator of the key moves a visual indicia among these symbols to select a desired function. The key then transmits instructions to the lock causing the selected function to be executed.
    Type: Grant
    Filed: September 8, 1989
    Date of Patent: April 3, 1990
    Assignee: Supra Products, Inc.
    Inventors: Walter G. Henderson, John Q. Archer, II, Gerald R. Daum, George A. Ellson, John E. Gray, Wayne F. Larson, Rockne M. Olds, Jerry P. Scansen, John W. Sherman, Edgar J. Unrein
  • Patent number: 4896246
    Abstract: Battery power in an electronic lock system is conserved by delaying application of energy to the unlocking mechanism until a movable member, used to open the lock system, is moved.
    Type: Grant
    Filed: May 2, 1989
    Date of Patent: January 23, 1990
    Assignee: Supra Products, Inc.
    Inventors: Walter G. Henderson, John Q. Archer, II, Gerald R. Daum, George A. Ellson, John E. Gray, Wayne F. Larson, Rockne M. Olds, Jerry P. Scansen, John W. Sherman, Edgar J. Unrein
  • Patent number: 4766746
    Abstract: A comprehensive real estate lockbox system is disclosed which provides a variety of operational features. Some of these features include the ability to: record all accesses to all lockboxes; transfer all or part of such records from the lockboxes to a supervising real estate agency or board; organize and review such records; facilitate operation of lockboxes that are mounted in awkward or poorly lit locations; limit lockbox accesses to preselected agents, agencies or boards; reprogram lockboxes in the field; monitor redundantly the status of the lockbox battery; record diagnostic information on each operation of a lockbox or key; render keys inoperative on predetermined dates; disable unauthorized keys; grant agents from remote real estate boards permission to open certain lockboxes, and; grant different keys different privileges.
    Type: Grant
    Filed: February 17, 1987
    Date of Patent: August 30, 1988
    Assignee: Supra Products, Inc.
    Inventors: Walter G. Henderson, John Q. Archer, II, Gerald R. Daum, George A. Ellson, John E. Gray, Wayne F. Larson, Rockne M. Olds, Jerry P. Scansen, John W. Sherman, Edgar J. Unrein