Hoisting apparatus
First Claim
1. A hoist cable attachment assembly for attaching a pair of hoist cables to a payload gripping mechanism, comprising:
- a plate pivotable about a first axis;
a first hoist cable pivot assembly pivotable about a second axis and a second hoist cable pivot assembly pivotable about a third axis, said first and second hoist cable pivot assemblies disposed on opposite sides of said plate, said first, second and third axes parallel to each other;
a first hoist cable retaining means in said first pivot assembly, said first hoist cable retaining means adapted to rotateably retain a first end of a first hoist cable of said pair of hoist cables in said first hoist cable pivot assembly, said first hoist cable rotatable about a fourth axis;
a second hoist cable retaining means in said second pivot assembly, said second hoist cable retaining means adapted to rotateably retain a first end of a second hoist cable of said pair of hoist cables in said second hoist cable pivot assembly, said second hoist cable rotatable about a fifth axis;
wherein said fourth and fifth axes are parallel to each other and said fourth and fifth axes are perpendicular to said first, second and third axis; and
1a bracket for attaching said hoist cable attachment assembly to said payload gripping mechanism.
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Accused Products
Abstract
A cable attachment assembly, a hoist and a transportation system using the cable attachment assembly. The cable attachment assembly including: a plate pivotable about a first axis; first and second pivot assemblies pivotable about respective second and third axes, the first, second and third axes parallel to each other; a first cable retainer in the first pivot assembly, the first cable retainer adapted to rotateably retain an end of a first cable in the first cable pivot assembly, the first cable rotatable about a fourth axis; a second cable retainer in the second pivot assembly, the second cable retainer adapted to rotateably retain an end of a second cable in the second pivot assembly, the second cable rotatable about a fifth axis; wherein the fourth and fifth axes parallel to each other and the fourth and fifth axes are perpendicular to the first, second and third axis.
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Citations
30 Claims
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1. A hoist cable attachment assembly for attaching a pair of hoist cables to a payload gripping mechanism, comprising:
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a plate pivotable about a first axis; a first hoist cable pivot assembly pivotable about a second axis and a second hoist cable pivot assembly pivotable about a third axis, said first and second hoist cable pivot assemblies disposed on opposite sides of said plate, said first, second and third axes parallel to each other; a first hoist cable retaining means in said first pivot assembly, said first hoist cable retaining means adapted to rotateably retain a first end of a first hoist cable of said pair of hoist cables in said first hoist cable pivot assembly, said first hoist cable rotatable about a fourth axis; a second hoist cable retaining means in said second pivot assembly, said second hoist cable retaining means adapted to rotateably retain a first end of a second hoist cable of said pair of hoist cables in said second hoist cable pivot assembly, said second hoist cable rotatable about a fifth axis; wherein said fourth and fifth axes are parallel to each other and said fourth and fifth axes are perpendicular to said first, second and third axis; and 1a bracket for attaching said hoist cable attachment assembly to said payload gripping mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A hoist system for lifting and lowering a payload, comprising:
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a lifting mechanism comprising three pairs of hoist cable drums disposed on a first frame, said pairs of hoist cable drums disposed at angles of about 120°
to each other, each hoist cable drum of each pair of hoist cable drums longitudinally aligned to a same axis;a payload gripping mechanism having three hoist cable attachment assemblies attached to a second frame, said hoist cable attachment assemblies disposed at angles of about 120°
to each other, each hoist cable attachment assembly having a first set of three parallel axes and a second set of two parallel axes, said first set of axes perpendicular to said second set of axes, each hoist cable attachment assembly having a pair of hoist cable pivot assemblies;three pairs of hoist cables, a first end of a first hoist cable of each pair of hoist cables attached to a first hoist cable drum and a first end of a second hoist cable of each pair of hoist cables attached to a second hoist cable drum of one of said three pairs of co-joined hoist cable drums, a second end of said first hoist cable of each pair of hoist cables attached to a first hoist cable pivot assembly and a second end of said second hoist cable of each pair of hoist cables attached to a second hoist cable pivot assembly of one of said three pairs of pivot assemblies; and wherein each hoist cable attachment assembly is pivotable about a center axis of a corresponding said first set of three axes, each hoist cable pivot assembly of each pair of hoist cable pivot assemblies is pivotable about a different outer axis of said corresponding said first set of three axes, and each hoist cable of each pair of hoist cables is rotatable about a different axis of a corresponding said second set of two axes. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A transportation system for lifting and lowering a payload, comprising:
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an overhead rail transportation system; a lifting mechanism coupled to said overhead rail transportation system, said lifting mechanism comprising three pairs of hoist cable drums disposed on a first frame, said pairs of hoist cable drums disposed at angles of about 120°
to each other, each hoist cable drum of each pair of hoist cable drums longitudinally aligned to a same axis;a payload gripping mechanism having three hoist cable attachment assemblies attached to a second frame, said hoist cable attachment assemblies disposed at angles of about 120°
to each other, each hoist cable attachment assembly having a first set of three parallel axes and a second set of two parallel axes, said first set of axes perpendicular to said second set of axes, each hoist cable attachment assembly having a pair of hoist cable pivot assemblies;three pairs of hoist cables, a first end of a first hoist cable of each pair of hoist cables attached to a first hoist cable drum and a first end of a second hoist cable of each pair of hoist cables attached to a second hoist cable drum of one of said three pairs of co-joined hoist cable drums, a second end of said first hoist cable of each pair of hoist cables attached to a first hoist cable pivot assembly and a second end of said second hoist cable of each pair of hoist cables attached to a second hoist cable pivot assembly of one of said three pairs of pivot assemblies; and wherein each hoist cable attachment assembly is pivotable about a center axis of a corresponding said first set of three axes, each hoist cable pivot assembly of each pair of hoist cable pivot assemblies is pivotable about a different outer axis of said corresponding said first set of three axes, and each hoist cable of each pair of hoist cables is rotatable about a different axis of a corresponding said second set of two axes. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification