Patents by Inventor Martin Birger Aberg

Martin Birger Aberg 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).

  • Safety device for gear wheels
    Patent number: 4055092
    Abstract: A gear wheel is provided with a safety release disc adjacent one face thereof, said disc having teeth formed as direct extensions of the gear wheel teeth. The disc teeth engage the same gear element as the teeth of the gear wheel but the disc is rotatable on the gear wheel axle. In the event of tooth wear or tooth breakage of the gear wheel the gear wheel will turn relative to the disc, which has no rotational load. This relative movement is utilized to trip signalling or locking devices as desired.
    Type: Grant
    Filed: November 12, 1976
    Date of Patent: October 25, 1977
    Inventor: Martin Birger Aberg