Patents by Inventor Roger Manjot

Roger Manjot 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 system for hydraulically controlled hoisting apparatus
    Patent number: 4411368
    Abstract: In this device, with each jack there is associated a pressure detection system comprising two thresholds, the upper one corresponding to the maximum pressure permitted, this double detection making it possible to determine the change in the pressure during the carrying out of a movement, after passage of the first threshold.
    Type: Grant
    Filed: March 9, 1981
    Date of Patent: October 25, 1983
    Inventor: Roger Manjot