Patents by Inventor Donald Herbert Larson

Donald Herbert 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: 3954318
    Abstract: An electrical connector for use in preventing electrical operation of an appliance by its normal power cord when an access panel to the interior of the appliance is removed. The connector includes electrically connectable male and female elements, one of which is mounted in the appliance housing and the other of which is mounted to the closure panel. A guide structure is associated with the connector element mounted in the appliance for guiding the other element into accurately aligned relationship therewith prior to engagement between the elements, thereby providing effectively improved and facilitated electrical connection of the appliance to a power source. The guide structure further cooperates with cooperative securing elements provided for securing the closure panel to the appliance housing to effect automatic alignment therebetween when the connector elements are aligned.
    Type: Grant
    Filed: January 30, 1975
    Date of Patent: May 4, 1976
    Assignee: Warwick Electronics Inc.
    Inventors: Donald Herbert Larson, Joseph E. Josephs