Patents by Inventor David Lee Rahamin

David Lee Rahamin 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).

  • Devices and methods for sifting
    Patent number: 10994305
    Abstract: A sifting device having an upper chamber and a lower chamber. An upper chamber offset opening is disposed on the end wall of the upper chamber and offset from a central axis. A shaft rotates about the central axis of the upper chamber. A blade in the upper chamber and attached with the shaft. The blade is configured to rotate between an open position and a closed position. A cone element is disposed on the blade and concentric with the upper chamber. A lower sifting element is disposed within the lower chamber. The shaft attached with the lower sifting element such that the lower sifting element rotates in the lower chamber when the shaft rotates. The upper chamber offset opening is configured to allow powdered substance to move from the upper chamber to the lower chamber so that the blade and lower sifting element can sift powdered substances.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: May 4, 2021
    Inventor: David Lee Rahamin
  • DEVICES AND METHODS FOR SIFTING
    Publication number: 20190240699
    Abstract: A sifting device having an upper chamber and a lower chamber. An upper chamber offset opening is disposed on the end wall of the upper chamber and offset from a central axis. A shaft rotates about the central axis of the upper chamber. A blade in the upper chamber and attached with the shaft. The blade is configured to rotate between an open position and a closed position. A cone element is disposed on the blade and concentric with the upper chamber. A lower sifting element is disposed within the lower chamber. The shaft attached with the lower sifting element such that the lower sifting element rotates in the lower chamber when the shaft rotates. The upper chamber offset opening is configured to allow powdered substance to move from the upper chamber to the lower chamber so that the blade and lower sifting element can sift powdered substances.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 8, 2019
    Inventor: David Lee Rahamin