Single side entry container lifting device
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsCharles A. Domino, Joseph F. Picarello
Life of this patent
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Abstract
A lifting apparatus including a horizontal framework having a connector connected to a bridge crane trolley and a motor mounted on the horizontal framework, a telescoping mast unit coupled to one side of the horizontal framework and having upper, middle, and lower mast assembly and adjusting a height of the lifting apparatus, a fork tine assembly adjusting the tine center to center distance, and a counterbalance coupled to the other side of the horizontal framework is provided. The horizontal framework is coupled to an overhead bridge crane and is accessible to any load located within a minimum amount of aisle space.
Claims13
A lifting device, comprising:
- a horizontal framework;
- a telescoping mast unit having a plurality of telescoping mast assemblies, coupled to said horizontal framework, approximately perpendicular to said horizontal framework, wherein said telescoping mast unit vertically moves toward and away from said horizontal framework;
- a connector connected to the horizontal framework for suspending the device;
- a fork tine unit mounted on one of said telescoping mast assemblies, having a pair of tines spaced-apart from each other;
- a power source;
- a screw coupled to said power source, coupling said power source to one of said telescoping mast assemblies wherein said telescoping mast unit telescopes through said power source;
- and,
- a mast tilting unit wherein said telescoping mast unit pivots in relation to said horizontal framework.
A lifting device, comprising:
- a horizontal framework;
- a telescoping mast unit having a plurality of telescoping mast assemblies, coupled to said horizontal framework, approximately perpendicular to said horizontal framework, wherein said telescoping mast unit vertically moves toward and away from said horizontal framework;
- a fixed nut mounted on said telescoping mast unit;
- a vertical motor connected rotationally to a vertical screw wherein said vertical screw moves within said fixed nut during rotation;
- a power screw jack coupling said vertical motor to said vertical screw;
- a fork tine unit mounted on one of said telescoping mast assemblies, having a pair of tines spaced-apart from each other;
- a power source;
- and,
- said screw coupled to said power source, coupling said power source to one of said telescoping mast assemblies wherein said telescoping mast unit telescopes through said power source.
A process for lifting containers, comprising the steps of:
- providing a lifting device comprising a horizontal framework, a telescoping mast unit having a plurality of telescoping mast assemblies, coupled to said horizontal framework, approximately perpendicular to said horizontal framework, wherein said telescoping mast unit vertically moves toward and away from said horizontal framework, a connector connected to the horizontal framework for suspending the device, a fork tine unit mounted on one of said telescoping mast assemblies, having a pair of tines spaced-apart from each other, an upper mast assembly connected to said horizontal framework by a mast tilting unit, a middle mast assembly telescoped into said upper mast assembly and connected to said upper assembly through a vertical screw connected between said middle mast assembly and a vertical motor wherein said vertical motor may turn said vertical screw, and, a lower mast assembly telescoped into said middle mast assembly and connected to said upper mast assembly through a chain supported by said middle mast assembly wherein vertical movement of said middle mast assembly results in vertical movement of said lower mast assembly;
- and,
- initiating said lifting device.
Dependencies are inferred from the claim text.