Patents by Inventor Poul Due Jensen

Poul Due Jensen 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: 4042847
    Abstract: A liquid-filled submersible electromotor, especially motor has in one end rotating sealing means for sealingly closing the water-filled space in the motor casing, the sealing means being adapted to automatically release over-pressure in that space and to allow passage of water from the space to the space surrounding the casing, and vice versa. At the other end the motor casing has a bearing for the motor shaft, preferably of the Michell type, wherein one sliding surface is constituted by an annular member of a non-metallic material, preferably ceramics, and the other by movable blocks, also of non-metallic material.
    Type: Grant
    Filed: July 7, 1975
    Date of Patent: August 16, 1977
    Assignee: Grundfos A/S
    Inventor: Poul Due Jensen