Patents by Inventor Martin Dale Harding

Martin Dale Harding 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).

  • Self centering spin nock
    Patent number: 9212874
    Abstract: A nock for promoting a natural spin on an arrow shaft prior to the nock separating from a bowstring includes a nock segment possessing a bowstring rest portion, and a base portion which is coupled to a retaining portion via a collar portion. The retainer is attached to the end of an arrow shaft. The nock segment freewheels independently of the retainer and the arrow shaft to permit the arrow fletching moving through the air to act on the shaft inducing a natural spin to the shaft prior to separation of the bowstring and the nock.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: December 15, 2015
    Inventor: Martin Dale Harding
  • Spin nock
    Patent number: 8257208
    Abstract: A nock for promoting a natural spin on an arrow shaft prior to the nock separating from a bowstring includes a nock segment possessing a bowstring rest portion, and a base portion which is coupled to a retaining portion which is attached to the end of an arrow shaft. The nock segment freewheels independently of the retainer and the arrow shaft to permit the fletching moving through the air to act on the shaft producing a natural spin to the shaft prior to its release from the bow.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: September 4, 2012
    Inventor: Martin Dale Harding
  • Spin nock
    Publication number: 20110244997
    Abstract: A nocking means of promoting a natural spin on an arrow shaft prior to the nock separating from a bowstring includes an nock segment possessing a bowstring rest portion, and a base portion which is coupled to a retaining portion which is attached to the end of an arrow shaft. The nock segment freewheels independently of the retainer and the arrow shaft to permit the fletching moving through the air to act on the shaft producing a natural spin to the shaft prior to its release from the bow.
    Type: Application
    Filed: February 14, 2011
    Publication date: October 6, 2011
    Inventor: Martin Dale Harding