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Electro-hydraulic hoisting apparatus

  • US 20060208240A1
  • Filed: 02/21/2006
  • Published: 09/21/2006
  • Est. Priority Date: 03/15/2005
  • Status: Abandoned Application
First Claim
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1. An electro-hydraulic lifting apparatus, comprising in combination:

  • a horizontal base;

    two or more horizontally-oriented elongated legs extending perpendicularly from and attached to the base, wherein the two or more horizontally-elongated legs are adapted for accepting leg extensions to provide additional stability for the horizontal base;

    a vertical-oriented support component connected to the horizontal base for accepting a telescopic boom;

    a pivotally mounted lifting beam including a horizontal telescoping boom and a hoisting apparatus connected to the vertical-oriented support component, wherein the horizontal telescopic boom connected to the vertical support for precisely raising and lowering an object;

    a two-way hydraulic ram connected between the vertical-oriented support and the horizontal telescopic boom for precisely raising and lowering an object via the horizontal telescopic boom in an up or down direction, wherein the two-way hydraulic ram is precisely raised and lowered with hydraulic pressure from a reservoir;

    a reservoir connected to the two-way hydraulic ram to supply hydraulic fluid to provide hydraulic pressure to the two-way hydraulic ram;

    a hydraulic pump connected to the hydraulic ram including a plurality of electro-static valves for automatically and dynamically controlling the two-way hydraulic ram by automatically adding or removing hydraulic pressure to the two-way hydraulic ram when a load is applied to the horizontal telescopic boom and the horizontal telescopic boom is moved in an up or down direction;

    an electrical controller connected to the hydraulic pump for controlling the hydraulic pump, thereby automatically, dynamically and precisely controlling the two-way hydraulic ram; and

    a portable power source for providing power to the electrical controller and the hydraulic pump.

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