Patents by Inventor Ralph Robertson Hepburn

Ralph Robertson Hepburn 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).

  • Blow pipe dart
    Patent number: 9541358
    Abstract: An elastomeric blow pipe dart (10) including: a generally circular body portion (12); a tapered portion (16) extending from the generally circular body portion (12); and a nose (18) having a smaller diameter than the tapered portion (16) and extending from the tapered portion (16) to a tip (20). The blow pipe dart (10) may comprise a soft rubber, and the nose (18) may define an end bore (26) so that air passes through the nose (18) when the dart (10) is launched.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: January 10, 2017
    Inventor: Ralph Robertson Hepburn
  • BLOW PIPE DART
    Publication number: 20140261361
    Abstract: An elastomeric blow pipe dart (10) including: a generally circular body portion (12); a tapered portion (16) extending from the generally circular body portion (12); and a nose (18) having a smaller diameter than the tapered portion (16) and extending from the tapered portion (16) to a tip (20). The blow pipe dart (10) may comprise a soft rubber, and the nose (18) may define an end bore (26) so that air passes through the nose (18) when the dart (10) is launched.
    Type: Application
    Filed: February 21, 2014
    Publication date: September 18, 2014
    Inventor: Ralph Robertson Hepburn
  • Bagpipe drones
    Patent number: 6476301
    Abstract: A drone is disclosed for use in a set of bagpipes for indoor play, the bagpipes having the drone fitted are substantially smaller and more quiet than conventional bagpipes. Advantageously the drone can be produced in the main from brass tubing which is cheaper than the products used to make conventional bagpipes.
    Type: Grant
    Filed: January 21, 2000
    Date of Patent: November 5, 2002
    Inventor: Ralph Robertson Hepburn