Patents by Inventor Donald R. Combs

Donald R. Combs 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).

  • Cigar holder
    Patent number: 6363941
    Abstract: A cigar holder is a large size 50 mm “binder clip” modified in a way to hold various sizes of cigars between the opposed gripping means above the clamping element. The device will clip onto a narrow surface up to 20 mm in diameter. The cigar holder includes a clamping element, a pair of opposed gripping means which when pressed together, open the clamping element for securing the device to any stationary surface 20 mm in diameter or less within the clamping elements. The improvement comprising two bends in the opposed gripping meand forming a shape that will receive and hold a cigar or golf club.
    Type: Grant
    Filed: July 5, 2000
    Date of Patent: April 2, 2002
    Inventor: Donald R. Combs
  • Combination dust collector and heat exchanger
    Patent number: 4053293
    Abstract: A dust collector of the gravity separation type is combined with a heat exchanger to provide a dust collector/air preheater, or a dust collector/economizer, depending upon the heat exchange fluid used, suited for usage in a system or process for discharging and exchanging heat with exhaust gases from a boiler.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: October 11, 1977
    Assignee: Bumstead Woolford Co.
    Inventor: Donald R. Combs