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US 6,527,482 B1Granted
Grit surface cable products
AssigneeJennmar Corporation
InventorJohn C. Stankus
Life of this patent
Estimating the term…
Abstract
A mine roof bolt, preferably one inch or less in diameter, having an external coating configured with particles which mix resin as the mine roof bolt is rotated in a mine roof bore hole.
Claims16
A mine roof support device for use with a substantially one-inch diameter mine roof bore hole comprising:
- an elongated body having a first end, second end, an external surface, and a cross-sectional diameter less than the diameter of said mine roof bore hole;
- a resin mixing device positioned on said external surface of said elongated member, said resin mixing device comprising a coating forming a layer on said external surface;
- and
- said coating is a rigid material containing a plurality of particulates, wherein one or more of said plurality of particulates protrudes through said layer of said coating, forming a textured surface suitable for mixing resin;
- and
- a drive head position adjacent said first end of said elongated body for rotating said elongated body and agitating said resin mixing device.
3 more elements
A method of supporting a mine roof comprising the steps of:
- drilling a bore hole in a mine roof;
- inserting resin in said bore hole;
- providing an elongated body having a first end, second end, an external surface, a resin mixing device positioned on said external surface of said elongated body, said resin mixing device comprising a rigid coating forming a layer, and at least one particulate received in said rigid coating;
- inserting said second end of said elongated body into said bore hole;
- and
- rotating said elongated body such that said at least one particulate mixes said resin.
3 more elements
A mine roof support device for use with a substantially one inch diameter mine roof bore hole comprising:
- a multi-strand cable bolt having:
- a first end, second end, an external surface, and a cross-sectional diameter of about one inch or less;
- a resin mixing device positioned on each strand of said multi-strand cable bolt and said external surface of said multi-strand cable bolt, said resin mixing device comprising a rigid coating forming a layer on said external surface said rigid coating containing a plurality of particulates, wherein said plurality of particulates protrudes through said layer of said rigid coating, forming a textured surface suitable for mixing resin;
- a drive head positioned adjacent said first end of said multi-strand cable for rotating said multi-strand cable bolt and agitating said resin mixing device;
- a barrel and wedge assembly positioned between said drive head and said second end;
- and
- a bearing plate positioned between said barrel and wedge assembly and said second end.
4 more elements
Dependencies are inferred from the claim text.