Patents by Inventor Karl-Heinz Schmiegel

Karl-Heinz Schmiegel 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).

  • Vacuum cleaning apparatus
    Patent number: 4688292
    Abstract: A vacuum cleaning apparatus has a main suction box (11) with a dirt collecting container (32) and an auxiliary suction box (16) with a flexible hose (14) laid therein in the form of a loop (15), with the flexible hose being guided outwardly through an opening (17) in the front wall of the housing (36). The flexible hose (14) is automatically drawn in into its position of non-use and is automatically cleaned during this by a depression in the auxiliary suction box (16).
    Type: Grant
    Filed: July 21, 1986
    Date of Patent: August 25, 1987
    Inventor: Karl-Heinz Schmiegel