Patents by Inventor Douglas F. Brink

Douglas F. Brink 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).

  • Stone cleaning agent and preparation thereof
    Patent number: 6090766
    Abstract: It has long been the practice to clean monuments and memorials, in fact, any stone surface through the use of harsh chemicals or physical removal systems, such as sand blasting. A compound containing ammonium fluoride (NH4F), ammonium bifluoride (NH4F.HF), denatured alcohol (CH2H60) and water is mixed in an aqueous solution for use as a cleaning agent for all stone products and structures. A method of cleaning the stone items is also disclosed.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: July 18, 2000
    Inventor: Douglas F. Brink
  • Granite cleaning agent and preparation thereof
    Patent number: 4897213
    Abstract: It has long been the practice to clean monuments and memorials through the use of harsh chemicals or physical removal systems, such as sand blasting. A compound containing ammonium bifluoride (NH.sub.4 F.HF), denatured alcohol and water is mixed in an aqueous solution for use as a cleaning agent for all granite products and structures. A method of cleaning the granite items is also disclosed.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: January 30, 1990
    Inventor: Douglas F. Brink
  • Cup holder
    Patent number: 4715633
    Abstract: A device for holding a disposable cup or the like is disclosed. The device includes a member for gripping the cup about the outer surface thereof, and a mechanism for adjusting the gripping member to conform to the diameter of the cup. A handle is provided along with a mechanism for attaching the handle to the gripping member.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: December 29, 1987
    Assignee: Benchmark Ventures
    Inventors: Douglas F. Brink, John MacConnell
  • Cable and pipe laying machine
    Patent number: 4014175
    Abstract: A cable or pipe laying machine for underground placement of cable or pipe incorporating a basic frame and power unit incorporating a front powered tractive component and a rear powered tractive component with the front and rear components being articulately interconnected for steering control of the machine and the rear component including a drawbar assembly and a cable or pipe laying plow associated therewith. The front and rear components each or both may be provided with cable or pipe reels and guide structures for guiding the cable or pipe to the plow. The machine may be formed by converting an existing scraper unit to a cable and pipe laying machine by a unique method including removal of the scraper structure and addition of cable reel mounting structures, guides, cable laying plow and controls at the upper portion of the rear tractive component.
    Type: Grant
    Filed: May 5, 1975
    Date of Patent: March 29, 1977
    Inventor: Douglas F. Brink