Patents by Inventor Nigel Peter Fox

Nigel Peter Fox 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).

  • Actuator assembly
    Patent number: 7533528
    Abstract: An actuator assembly (1) comprises a body (2) in which works an actuating piston (7), a first piston (5) and at least one second piston (6), a chamber (26) containing a substantially incompressible fluid by which each of the first and second pistons (5, 6) acts on the actuating piston (7). The movement of the first piston (5) from a retracted position to an extended position acts via the fluid to cause the actuating piston (7) to move from a retracted position to an operational position, and subsequent movement of a second piston (6) from a retracted position to an extended position acts via the fluid to cause an actuation movement of the actuating piston (7).
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: May 19, 2009
    Assignee: Norgren Limited
    Inventor: Nigel Peter Fox
  • 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
  • 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