Patents by Inventor Andrew W. Howarth

Andrew W. Howarth 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).

  • Patent number: 4289274
    Abstract: A rail length and rail joint is described which avoids the use of bolts, the rail length comprising basically a fastening element secured at each rail end to be joined, the element being provided with a through bore extending parallel to the longitudinal axis of the associated rail length and a projection located in a position in which it intersects the bore and being radially displaceable to a location in which it lies clear of the bore. The rail length may be provided at each end with such a fastening element, one constituting a male element and the other a female element, the rail joint incorporating abutting male and female elements and a necked connecting pin.
    Type: Grant
    Filed: February 1, 1979
    Date of Patent: September 15, 1981
    Assignee: Gyro Mining Transport Limited
    Inventors: Richard C. Hudson, Andrew W. Howarth