Patents by Inventor Hubert Platzer

Hubert Platzer 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).

  • Brushless synchronous motor with short-circuited protective winding for the field winding of the rotor
    Patent number: 4825138
    Abstract: In a brushless synchronous motor in which a short-circuited protective winding (9) is associated with the field winding (2) of the rotor the starting conditions are improved in that the protective winding (9) consists of two winding sections (10, 11), which have different numbers of turns and are either wound in mutually opposite senses or are wound in the same sense but connected in opposition.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: April 25, 1989
    Assignee: Dipl. Ing. Hitzinger Gesellschaft mbH
    Inventors: Hubert Platzer, Helmut Roland
  • Brushless synchronous generator system
    Patent number: 4121148
    Abstract: A generator has a stator which is provided with a multipole main winding and with an auxiliary winding, which is separate from and has the same number of poles as said main winding and a coil width not in excess of one-half of the pole pitch of said main winding. An exciter has a field-exciting winding. A controller is connected between said auxiliary winding and said field-exciting winding to energize the latter.
    Type: Grant
    Filed: April 25, 1977
    Date of Patent: October 17, 1978
    Assignee: Dipl.-Ing. Hitzinger & Co.
    Inventor: Hubert Platzer