Patents by Inventor John Nigel Ramsden

John Nigel Ramsden 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: 5803719
    Abstract: A turbocharged diesel engine is described. The engine has a two stage turbocharger assembly including low pressure turbochargers coupled and parallel and arranged in series with a single high pressure turbocharger. This allows all turbochargers to be of comparable dimensions for interchangeability of parts. The turbochargers may be mounted on an enclosure which encloses the turbines and the exhaust gas duct work which communicates with the exhaust pipe to insure that any leaking exhaust gas escapes to the atmosphere via the exhaust pipe. A cartridge is also described which contains the moving parts which can be removed without disturbing the turbine housing.
    Type: Grant
    Filed: July 10, 1996
    Date of Patent: September 8, 1998
    Assignee: GEC--Alsthom Diesels Limited
    Inventors: John Nigel Ramsden, Ian Walter Drake
  • Patent number: 5697217
    Abstract: A turbocharged diesel engine has a two-stage turbocharger assembly comprising two low-pressure turbochargers coupled in parallel arranged in series with a single high-pressure turbocharger. This allows all turbochargers to be of comparable dimensions and allows for interchangeability of parts. The turbochargers may be mounted on an enclosure which encloses the turbines and the exhaust gas duct work and which communicates with the exhaust pipe to ensure that any leaking exhaust gas escapes to the atmosphere via the exhaust pipe.
    Type: Grant
    Filed: January 23, 1997
    Date of Patent: December 16, 1997
    Assignee: GEC- Alstholm Diesels Limited
    Inventors: John Nigel Ramsden, Ian Walter Drake
  • Patent number: 5692378
    Abstract: A turbocharger assembly includes a housing containing a first turbocharger and second and third turbochargers disposed on opposite sides of the first turbocharger. The exhaust gas outlet of the turbine of the first turbocharger is connected to the inlets of the turbines of the second and third turbochargers in parallel. All turbochargers are substantially identical in size. A plurality of assemblies my be employed to turbocharge a diesel engine, the respective second compressors being connected in parallel and the respective third compressors being connected in parallel. The housing may be gas-light.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: December 2, 1997
    Assignee: GFC Alsthom Diesels Limited
    Inventor: John Nigel Ramsden