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Lift vehicle with multiple capacity envelope control system and method

  • US 8,622,170 B2
  • Filed: 02/26/2004
  • Issued: 01/07/2014
  • Est. Priority Date: 02/26/2004
  • Status: Active Grant
First Claim
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1. A multiple envelope control system for a lift vehicle, the lift vehicle including a platform mounted to a telescoping main boom, the main boom being configured for lift/lower function and telescope function, the multiple envelope control system comprising:

  • a selector switch for selecting between a plurality of capacity modes including at least a low load mode and a high load mode;

    a plurality of sensors strategically positioned on the main boom, the sensors cooperatively defining position zones of the platform; and

    a control system communicating with the selector switch and the plurality of sensors, the control system receiving output from the plurality of sensors to determine in which position zone the platform is located, wherein the control system controls a predefined envelope of the platform based on a position of the selector switch and controls operation of the main boom based on which position zone the platform is located in, and wherein the control system is configured such that when the selector switch is in the high load mode, the control system selectively prevents at least one of the lift/lower function and the telescope function based on which position zone the platform is located in.

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