Patents by Inventor Steven W. Drumheller

Steven W. Drumheller 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).

  • Reciprocal chuck for paving breaker
    Patent number: 5511800
    Abstract: A handheld paving breaker includes a reciprocal chuck in a front head and an elastic spring for biasing the chuck toward the fronthead. The chuck can move longitudinally, but is restrained from rotation in the fronthead. A moil mounted in the chuck is biased against the work surface by the chuck, to provide better control of the moil, during start-up and operation. Wear pads between the spring and members against which the spring is seated improve spring life.
    Type: Grant
    Filed: March 6, 1995
    Date of Patent: April 30, 1996
    Assignee: Ingersoll-Rand Company
    Inventors: Steven W. Drumheller, Ted C. Chang
  • Reciprocal chuck for paving breaker
    Patent number: 5431235
    Abstract: A handheld paving breaker includes a reciprocal chuck in a front head and an elastic spring for biasing the chuck toward the fronthead. The chuck can move longitudinally, but is restrained from rotation in the fronthead. A moil mounted in the chuck is biased against the work surface by the chuck, to provide better control of the moil, during start-up and operation. Wear pads between the spring and members against which the spring is seated improve spring life.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: July 11, 1995
    Assignee: Ingersoll-Rand Company
    Inventors: Steven W. Drumheller, Ted C. Chang