Patents by Inventor David Richard Jordan Hirst

David Richard Jordan Hirst 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).

  • Parachute ripcord pins
    Patent number: 7387278
    Abstract: Ripcord pins secure a parachute pack and, on removal, allow the parachute to be deployed from the pack. Such pins are provided with indicating means that provide an indication, such as a visual indication, that the pin has been bent. This avoids the re-use of straightened pins that may break in use.
    Type: Grant
    Filed: July 21, 2005
    Date of Patent: June 17, 2008
    Assignee: Airborne Systems Limited
    Inventors: David Richard Jordan Hirst, Adrian Jones
  • Parachutes
    Patent number: 6769650
    Abstract: A parachute has a canopy and rigging lines with skirt assist lines connected between a point on each rigging line adjacent a lower edge of the canopy and a point on the interior of the canopy spaced from the lower edge. The arrangement is such that a portion of the canopy between the point and the lower edge is relieved of tension as the canopy is deployed to assist the opening of the canopy. The skirt assist lines are frangible. This prevents rapid deployment of the canopy to lower g-forces on the load in high speed opening.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: August 3, 2004
    Assignee: Wardle Storeys (Safety & Survival Equipment) Limited
    Inventors: Nigel Stuart Parker, David Richard Jordan Hirst
  • Parachutes
    Publication number: 20040065782
    Abstract: A parachute has a canopy and rigging lines with skirt assist lines connected between a point on each rigging line adjacent a lower edge of the canopy and a point on the interior of the canopy spaced from the lower edge. The arrangement is such that a portion of the canopy between the point and the lower edge is relieved of tension as the canopy is deployed to assist the opening of the canopy. The skirt assist lines are frangible. This prevents rapid deployment of the canopy to lower g-forces on the load in high speed opening.
    Type: Application
    Filed: April 3, 2003
    Publication date: April 8, 2004
    Applicant: Wardle Storeys (Safety & Survival Equipment) Limited
    Inventors: Nigel Stuart Parker, David Richard Jordan Hirst
  • Parachutes
    Publication number: 20020092952
    Abstract: A parachute has a canopy and rigging lines with skirt assist lines connected between a point on each rigging line adjacent a lower edge of the canopy and a point on the interior of the canopy spaced from the lower edge. The arrangement is such that a portion of the canopy between the point and the lower edge is relieved of tension as the canopy is deployed to assist the opening of the canopy. The skirt assist lines are frangible. This prevents rapid deployment of the canopy to lower g-forces on the load in high speed opening.
    Type: Application
    Filed: December 13, 2001
    Publication date: July 18, 2002
    Inventors: Nigel Stuart Parker, David Richard Jordan Hirst
  • Parachutes
    Patent number: 6276638
    Abstract: A reserve parachute with air pockets at the apex of the canopy to allow rapid deployment of the reserve parachute without tangling with a malfunctioning main parachute. Skirt assist lines are provided to allow the lower edge of the canopy to spread on deployment and thus speed the opening of the canopy. In addition, ties may be provided between the pockets to maximize their effectiveness.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: August 21, 2001
    Assignee: Wardle Storeys (Safety & Survival Equipment) Limited
    Inventors: Nigel Stuart Parker, David Richard Jordan Hirst
  • Parachutes
    Patent number: 6003815
    Abstract: A reserve parachute is provided with air pockets at the apex of the canopy to allow rapid deployment of the reserve parachute without tangling with a malfunctioning main parachute. Skirt assist lines are provided to allow the lower edge of the canopy to spread on deployment and thus speed the opening of the canopy. In addition, ties may be provided between the pockets to maximize their effectiveness.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: December 21, 1999
    Assignee: Wardle Storeys (Safety & Survival Equipment) Limited
    Inventors: Nigel Stuart Parker, David Richard Jordan Hirst