Patents by Inventor Leo P. Cormier

Leo P. Cormier 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: 4429754
    Abstract: Means are provided in combination with the depending cylindrical skirt of a drill rig for conveying drill cuttings from around the drill stem during a drilling operation so they will not deposit in the usual annular pile around the open mouth of the drill hole. The means comprise a hopper attached to the lower end of the skirt and having a side discharge opening into which one end of an endless conveyor protrudes in confronting relationship with the drill stem that passes through an accommodating opening in the otherwise closed bottom of the hopper. The conveyor is advantageously of scraper type, having an endless chain with scraper blades at intervals along its length that scrape along the bottom of a conveyor trough, and advantageously having an elongate discharge opening extending lengthwise of the bottom of the trough adjacent to the discharge end of the conveyor.
    Type: Grant
    Filed: July 15, 1981
    Date of Patent: February 7, 1984
    Inventor: Leo P. Cormier