Patents by Inventor Ray E. Larson

Ray E. Larson 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: 4591781
    Abstract: A circuit for varying the current to a load and, simultaneously, limiting the output of the load to a predetermined time interval. A timer chip having an RC network receives rectified current from an AC voltage source and responds thereto with a high output, which is used to bias an NPN transistor. The transistor permits the flow of rectified current to a logic triac, thereby triggering the logic triac and enabling current from the AC voltage source to flow to a variable resistor in series connection with a gating/AC timing capacitor, thereby triggering a diac. The diac responds to the controlled current flow from the variable resistor by operating the gate of a power control triac and permitting the desired current flow between the load and the AC voltage source through the power control triac.
    Type: Grant
    Filed: June 6, 1983
    Date of Patent: May 27, 1986
    Assignee: Power Controls Corporation
    Inventor: Ray E. Larson