Patents by Inventor August F. Haack

August F. Haack 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).

  • Dental isolation system
    Patent number: 4917603
    Abstract: A system is implemented to isolate the patient and dentist from the breakdown products of tooth drilling including toxic mercury vapor generated during amalgam removal. The system includes a tooth isolation assembly, a fiber optic illumination and viewing system, a gas and water evacuation method and a compressed air optical surface clearing system.
    Type: Grant
    Filed: January 30, 1989
    Date of Patent: April 17, 1990
    Inventor: August F. Haack
  • Precision rotary positioning mechanism
    Patent number: 4802386
    Abstract: A tapered roller bearing is transformed into a friction planetary drive system by incorporating shafts onto rollers and supporting these in an arm member by means of bearings. The use of a tapered roller bearing for the principal element of the system is key to a precision, low cost drive system design.
    Type: Grant
    Filed: February 18, 1987
    Date of Patent: February 7, 1989
    Inventor: August F. Haack