Patents by Inventor David Frederick Hawkins

David Frederick Hawkins 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: 9267631
    Abstract: The disclosure provides a connector for connecting to an end of a tube. The connector may include a hollow connector body having an opening for receiving the end of the tube. The connector may further include a gripping mechanism for gripping the tube to hold it against retraction and a sealing mechanism for forming a seal between the tube and the connector body. The connector body may be formed from an opaque material and include a window therein. The window may be formed from a transparent material through which an end of the tube can be seen when the tube is correctly located within the connector.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: February 23, 2016
    Inventor: David Frederick Hawkins
  • Publication number: 20140131995
    Abstract: The invention provides a connector for connecting to an end of a tube, the connector comprising a hollow connector body having an opening for receiving the end of the tube, the connector further comprising gripping means for gripping the tube to hold it against retraction and sealing means for forming a seal between the tube and the connector body, wherein the connector body is formed from an opaque material but has a window therein formed from a transparent material through which an end of the tube can be seen when the tube is correctly located within the connector.
    Type: Application
    Filed: April 5, 2012
    Publication date: May 15, 2014
    Inventor: David Frederick Hawkins
  • Publication number: 20100135630
    Abstract: The invention provides a restraining device for restraining a cut microduct end against longitudinal movement in an outer protective duct, the device comprising a body having one or more openings through which uncut microducts can pass and means for anchoring a cut end of a microduct to the body.
    Type: Application
    Filed: February 7, 2008
    Publication date: June 3, 2010
    Inventor: David Frederick Hawkins
  • Patent number: 7640949
    Abstract: The invention provides a plug for sealing an end of a duct. The plug includes a sealing member for sealing against an interior surface of the duct, and gripping means having one or more teeth for gripping the interior surface of the duct. The plug may include a pair of opposed camming surfaces arranged for relative axial movement therebetween whereby the relative axial movement results in the teeth of the gripping means being urged radially outwardly into gripping engagement with the interior surface of the duct.
    Type: Grant
    Filed: August 1, 2006
    Date of Patent: January 5, 2010
    Inventor: David Frederick Hawkins
  • Publication number: 20080231001
    Abstract: The invention provides a plug for sealing an end of a duct. The plug includes a sealing member for sealing against an interior surface of the duct, and gripping means having one or more teeth for gripping the interior surface of the duct. The plug may include a pair of opposed camming surfaces arranged for relative axial movement therebetween whereby the relative axial movement results in the teeth of the gripping means being urged radially outwardly into gripping engagement with the interior surface of the duct.
    Type: Application
    Filed: August 1, 2006
    Publication date: September 25, 2008
    Inventor: David Frederick Hawkins