Patents by Inventor Olga H. Dolah

Olga H. Dolah 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: 6295681
    Abstract: A rotary brush cleaning device with interchangeable brush attachments including a power unit adapted for being held in a hand of a user. The power unit comprises a housing adapted for being gripped in the hand of a user, and the housing has an interior. A motor is mounted in the interior of the housing. An attachment mounting member is located in the interior of the housing, and a power source is located in the housing. At least one interchangeable brush attachment is provided for removably coupling to the power unit. The brush attachment includes a brush portion and an attachment base portion for removably mounting to the attachment mounting member of the power unit. The attachment mounting member has a mounting groove formed by an inner wall surface and an outer wall surface spaced from the inner wall surface. The mounting groove is substantially annular and peg members are located at diametrically opposite locations on the annular mounting groove.
    Type: Grant
    Filed: December 21, 1999
    Date of Patent: October 2, 2001
    Inventor: Olga H. Dolah
  • Patent number: 5852875
    Abstract: A new battery powered coring device for coring vegetables and fruits. The inventive device includes a handle portion and a coring implement detachably connected to the handle portion. An electric motor is mounted within the handle portion and is drivingly connected to the implement for rotating the implement. Power for the motor is supplied by a rechargeable battery which is disposed within the handle portion. Optionally, the coring implement may be replaced by a brush implement to permit the cleaning of various objects with the invention.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: December 29, 1998
    Inventor: Olga H. Dolah