Patents by Inventor Carol A. Witthoeft

Carol A. Witthoeft 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: 5111958
    Abstract: A refuse collection unit for household use comprising a container body defining a first storage area adapted to receive at least a conventional plastic refuse bag therein and a second storage area adapted to receive at least two removable rigid liners in a side-by-side disposition therein. The removable liners are each used to store a particular type of recyclable refuse material therein, and the conventional plastic refuse bag for storage of nonrecyclable refuse. The liners include a bottom wall, three liner walls and an upwardly stepped fourth wall. Hand-gripping elements are provided on each of said liners. The first storage area rises higher than the second storage area for easy recognition of the areas. In addition, a pair of hinged cover members are provided, one for the first storage area and the other for the second storage area. A third liner may be placed in the first storage area to occupy substantially one-half of said first storage area.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: May 12, 1992
    Inventor: Carol A. Witthoeft