Patents by Inventor Francois Gruber

Francois Gruber 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).

  • Electric motor with an improved bearing
    Patent number: 4783608
    Abstract: An electric motor provided with a bearing of improved design has a stator (1) supported by a mounting frame (3) and a rotor (4) in rigidly fixed relation to a shaft (5), the shaft being rotatably mounted in a plain bearing (7) placed within a tubular support (8) which is rigidly fixed to the motor frame (3). A sleeve (23) composed of material having a sufficient degree of elastic deformability to absorb vibrations is interposed between the outer face (24) of the bearing (7) and the inner face of the tubular support (8). The electric motor is intended in particular to equip propeller-type fans and is primarily applicable to direct-current motors of the electronic commutation type.
    Type: Grant
    Filed: June 25, 1987
    Date of Patent: November 8, 1988
    Assignee: Etudes Techniques Et Representations Industrielles E.T.R.I.
    Inventors: Francois Gruber, Andre Renaud