Patents by Inventor Robert D. Talvensaari

Robert D. Talvensaari 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).

  • Roof bolter and process
    Patent number: 4398850
    Abstract: Roof bolter and process for resin bolting a mine roof. The roof bolter comprises combined means for drilling and resin inserting in one position, means for bolt inserting in a second position, and means for positioning the roof bolter first into one and then into its second positions. The process comprises drilling a hole in the mine roof and inserting in tandem resin into the hole and, inserting into and securing a bolt within the hole. Preferably, the roof bolter and the process are automated and remotely controlled.The invention further includes a device designed for attachment to a three-position resin type roof bolter and for converting it to a two-position resin type roof bolter.
    Type: Grant
    Filed: February 9, 1981
    Date of Patent: August 16, 1983
    Assignee: Copper Range Company
    Inventor: Robert D. Talvensaari