Patents by Inventor Donald D. Conard

Donald D. Conard 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: 4462023
    Abstract: A position sensitive alarm is mounted to an item of personal property to be protected so that if the property is moved, an audible alarm is produced. The alarm includes a housing in which a battery, a buzzer and a position-sensitive switch are mounted therein. An aperture is cut in the housing so that the sound produced by the buzzer is not muffled within the housing. The components within the housing are fully enclosed, except for the battery. The battery is mounted within an open sided battery case, which itself is mounted within the housing. The circuit, lacking an on/off switch, is disarmed and armed by removal and replacement of the battery in the battery case.
    Type: Grant
    Filed: January 18, 1982
    Date of Patent: July 24, 1984
    Assignee: Chris E. Nielsen
    Inventors: Chris E. Nielsen, Donald D. Conard
  • Patent number: 4160495
    Abstract: A suitcase surrounded by paired circular raceways forming an endless track is disclosed. Into each of these raceways there is mounted a complementary revolving rim rotating upon bearings placed at intervals around the raceway. The rim, preferably taking the form of a circular tube, surrounds the suitcase. This rim forms the points of rotating transport over the ground. In operation, the suitcase is propelled by a handle which protrudes from the end wall of the suitcase between the raceways, yet permits convenient opening of the suitcase. The suitcase, because of its attachment at the handle, does not rotate. The tubes within the raceways do rotate and provide continuously revolving contact points with the ground.
    Type: Grant
    Filed: February 16, 1978
    Date of Patent: July 10, 1979
    Inventor: Donald D. Conard