Patents by Inventor Robert D. Craig

Robert D. Craig 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).

  • Differential case
    Patent number: 4402238
    Abstract: A differential case has a spider assembly within the case. The spider assembly has a plurality of shafts with each carrying a pinion. The end of each shaft is aligned with a port in the periphery of the case. A rigid retaining band is mounted to the case, and it surrounds the case and covers each of the ports. The band prevents a shaft in the spider assembly from leaving the case whenever the shaft breaks from the assembly.
    Type: Grant
    Filed: June 27, 1980
    Date of Patent: September 6, 1983
    Inventor: Robert D. Craig