Patents by Inventor Dario M. Rocca

Dario M. Rocca 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).

  • Patent number: 5107963
    Abstract: A hoist or skip conveyance for high speed hoisting operation within a vertical mine shaft is provided with sets of modules of guide rollers which engage sectional guide beams or girders extending the length of the shafts to steady the passage of the conveyance up and down the shaft. Each modular guide roller set for the system incorporates three guide rollers mounted for ready access on the outside of the respective guide module, to facilitate repair or replacement thereof. The load absorbing components for each guide roller comprise an air bag, permitting specific pre-loading of the roller, and an elastomeric high rate bumper spring to accommodate impact loads, while providing rebound capability and associated hysteresis damping, for smooth, chatter free operation of the system. The system may be specifically set up to counter the significant torquing effect of the hoisting cable.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: April 28, 1992
    Assignee: Norcast Corporation
    Inventors: Dario M. Rocca, Gary B. Howey