Patents by Inventor Heinrich-Rudolf Hausherr

Heinrich-Rudolf Hausherr 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).

  • Drilling apparatus
    Patent number: 5092411
    Abstract: A drilling apparatus, especially for drilling blast holes, includes a carriage, a drilling rod, a pressure-operated drive system movable along the carriage for transmitting a back and forth rotation to the drilling rod, a flushing head arranged on the carriage and movable either with or apart from the drilling rod, and a hydraulically operated in-hole hammer arranged on a front end of the drilling rod.
    Type: Grant
    Filed: November 8, 1989
    Date of Patent: March 3, 1992
    Assignee: Rudolf Hausherr & Sohne GmbH & Co. KG
    Inventors: Heinrich-Rudolf Hausherr, Friedhelm Eckey