Patents by Inventor James Robert Bell

James Robert Bell 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).

  • Leveling sensor/switch W/hydraulic control valve for vehicle leveling systems
    Patent number: 7000927
    Abstract: This invention consists of a Level Sensing Device and Hydraulic Control Valve, which, when, as a team, is applied to a system with a Hydraulic Pump W/Oil Reservoir, three or four Hydraulic Jacks, three or four Normally-Open Solenoid-Operated In-Line Hydraulic Valves, and piped and wired as described in this document, will provide a completely automatic leveling system for Recreational Vehicles, such as, Motorhomes, Pick-up Campers, and Camping Trailers. This Leveling Sensor/Switch and Hydraulic Control Valve can also be retro-fit into any exsisting manually-operated or semi-automatic hydraulic leveling system and, as a team, make it a completely automatic leveling system.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: February 21, 2006
    Inventor: James Robert Bell
  • Leveling sensor/switch w/hydraulic control valve for vehicle leveling systems
    Publication number: 20040090021
    Abstract: This invention consists of a Level Sensing Device and Hydraulic Control Valve, which, when, as a team, is applied to a system with a Hydraulic Pump W/Oil Reservoir, three or four Hydraulic Jacks, three or four Normally-Open Solenoid-Operated In-Line Hydraulic Valves, and piped and wired as described in this document, will provide a completely automatic leveling system for Recreational Vehicles, such as, Motorhomes, Pick-up Campers, and Camping Trailers. This Leveling Sensor/Switch and Hydraulic Control Valve can also be retro-fit into any exsisting manually-operated or semi-automatic hydraulic leveling system and, as a team, make it a completely automatic leveling system.
    Type: Application
    Filed: November 12, 2002
    Publication date: May 13, 2004
    Inventor: James Robert Bell