Patents Assigned to John Hafner
  • Patent number: 3938621
    Abstract: A vehicle servicing system for permitting operators to service and maintain their vehicles. The system includes a housing having an upper and lower level. A vehicle is positioned on the upper level over a slideably moveable door. The operator then decends to the lower level and inserts monies into a moveable door mechanism. Actuation of the door mechanism slides the moveable door away, thus providing the operator access to the underside of the vehicle for a specific length of time. The operator may service the vehicle during the time access is provided. An automatic timing mechanism actuates the moveable door mechanism to close the door after the alloted time is used. Specific embodiments of the servicing system provide mechanisms for draining oil from the vehicles during service.
    Type: Grant
    Filed: June 6, 1973
    Date of Patent: February 17, 1976
    Assignees: Rudolph Hafner, John Hafner
    Inventor: William C. Bobbitt, Jr.