Patents by Inventor Graham Heeks

Graham Heeks 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).

  • Valve arrangement and traffic calming device incorporating such an arrangement
    Patent number: 7004193
    Abstract: A reactive speed hump (2) includes a fluid flow control valve assembly (4). A first valve (18, 20, 21) is naturally open and a second valve (10, 14, 15, 16, 17), naturally closed. Application of fluid pressure on the control valve assembly below a first lower threshold level or above a second higher threshold level allows a flow of fluid from the inlet to the outlet, but an application of fluid pressure on the control valve between said first and second threshold levels allows substantially no fluid to flow between the inlet (7) and the outlet (9).
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: February 28, 2006
    Assignee: Autospan Limited
    Inventors: Graham Heeks, Nigel Peter Fox
  • Valve arrangement and traffic calming device incorporating such an arrangement
    Publication number: 20040177888
    Abstract: A reactive speed hump (2) includes a fluid flow control valve assembly (4). A first valve (18, 20, 21) is naturally open and a second valve (10, 14, 15, 16, 17), naturally closed. Application of fluid pressure on the control valve assembly below a first lower threshold level or above a second higher threshold level allows a flow of fluid from the inlet to the outlet, but an application of fluid pressure on the control valve between said first and second threshold levels allows substantially no fluid to flow between the inlet (7) and the outlet (9).
    Type: Application
    Filed: February 19, 2004
    Publication date: September 16, 2004
    Applicants: Autospan Limited, IMI Norgren Limited
    Inventors: Graham Heeks, Nigel Peter Fox
  • Valve arrangement and traffic calming device incorporating such an arrangement
    Patent number: 6726399
    Abstract: A reactive speed hump (2) includes a fluid flow control valve assembly (4). A first valve (18, 20, 21) is naturally open and a second valve (10, 14, 15, 16, 17), naturally closed. Application of fluid pressure on the control valve assembly below a first lower threshold level or above a second higher threshold level allows a flow of fluid from the inlet to the outlet, but an application of fluid pressure on the control valve between said first and second threshold levels allows substantially no fluid to flow between the inlet (7) and the outlet (9).
    Type: Grant
    Filed: November 26, 2002
    Date of Patent: April 27, 2004
    Assignee: Autospan Limited
    Inventors: Graham Heeks, Nigel Peter Fox
  • Deformable speed hump
    Patent number: 6659682
    Abstract: A road traffic speed control device which is located in a roadway, is formed of resiliently deformable material and is deflatable by the passage of a vehicle thereover at the intended speed limit of the vehicle in the roadway, in use. The device may be formed from an extruded or compressed partially recyclable rubber compound.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: December 9, 2003
    Assignee: Autospan Limited
    Inventor: Graham Heeks
  • Valve arrangment and traffic calming device incorporating such an arrangment
    Publication number: 20030143023
    Abstract: A reactive speed hump (2) includes a fluid flow control valve assembly (4). A first valve (18, 20, 21) is naturally open and a second A valve (10, 14, 15, 16, 17), naturally closed. Application of fluid pressure on the control valve assembly below a first lower threshold level or above a second higher threshold level allows a flow of fluid from the inlet to the outlet, but an application of fluid pressure on the control valve between said first and second threshold levels allows substantially no fluid to flow between the inlet (7) and the outlet (9).
    Type: Application
    Filed: November 26, 2002
    Publication date: July 31, 2003
    Inventors: Graham Heeks, Nigel Peter Fox
  • Deformable speed bump
    Publication number: 20020085881
    Abstract: A road traffic speed control device which is located in a roadway, is formed of resiliently deformable material and is deflatable by the passage of a vehicle thereover at the intended speed limit of said vehicle in said roadway, in use. The device may be formed from an extruded or compressed partially recyclable rubber compound.
    Type: Application
    Filed: November 21, 2001
    Publication date: July 4, 2002
    Inventor: Graham Heeks