Back to results
US 5,956,936 AGranted
Elongated chain link
AssigneeColumbia Steel Casting Co., Inc.
InventorsGarrick J. Ianello, Bruce C. Johnson
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeColumbia Steel Casting Co., Inc.
InventorsGarrick J. Ianello, Bruce C. Johnson
Estimating the term…
An elongated chain link comprising a pair of opposing U-shaped end portions connected by a pair of parallel leg portions. The leg portions are connected to each other by a pair of crosswise tie-bars situated toward the end portions approximately equally offset from the cross-axial centerline of the link. Additional crosswise tie-bars may be added to prevent the legs of the link from collapsing together when a large side-load is applied to the link. The leg portions are substantially square in cross section, while the end portions comprise an inner portion having an arcuate inner surface and an outer portion being substantially rectangular in cross-section. The chain link is preferably made of a high-strength cast alloy steel and is especially well-suited for use in dragline drag and hoist chains.
An elongated chain link comprising a pair of opposing U-shaped end portions connected by a pair of substantially parallel leg portions of equal predetermined length and being of predetermined cross-sectional area, said leg portions each having a lengthwise midpoint, and a pair of crosswise tie-bars extending between said leg portions approximately equally offset from said leg portion midpoints and toward each of said chain link end portions.
A dragline chain comprising a plurality of elongated chain links each comprising a pair of opposing U-shaped end portions connected by a pair of substantially parallel leg portions of equal predetermined length and being of predetermined cross-sectional area, said leg portions each having a lengthwise midpoint, and a pair of crosswise tie-bars extending between said leg portions approximately equally offset from said leg portion midpoints and toward each of said chain link end portions.
A dragline chain comprising a plurality of elongated chain links, each chain link comprising a pair of opposing U-shaped end portions having inner and outer portions, said end portions being connected by a pair of substantially parallel leg portions having a predetermined length and a substantially square cross-section, said leg portions being connected to each other by a first crosswise tie-bar situated substantially midway between the opposite ends of said leg portions, and second and third crosswise tie-bars substantially equally offset from said first crosswise tie-bar and located adjacent said chain link end portions, said end portion inner portions having an arcuate inner surface, said end portion outer portion being substantially rectangular in cross-section.
Dependencies are inferred from the claim text.