Resin-mixing article for mine roof anchor

Patent · Tue Jun 29 04:00:00 EDT 1993

OSTI ID:6419915

Wright, R L

An article is described for threaded engagement with the externally threaded, distal end of an elongated bolt to assist in mixing initially flowable components of a resin grouting material surrounding said distal end and article within a drill hole of substantially uniform diameter in a rock formation to form a solidified mass anchoring said distal end in said drill hole, said article comprising: (a) a ring-like base portion having an opening with a central axis, first and second surfaces lying in spaced planes transverse to said central axis, and internal threads for engagement with said bolt external threads; and (b) first and second elongated legs extending in opposite directions from said base portion first and second surfaces, respectively, substantially parallel to said central axis to terminal ends, said legs each being positioned radially outwardly of the cylindrical plane of said opening and extending circumferentially about said central axis for at least 90[degree] and not more than about 270[degree] at their junctures with said base portion between leading and trailing edges with respect to a predetermined direction of rotation of said article about said axis to a point on any surface of said article being less than said uniform diameter, and said leading edges comprise a substantially flat surface of predetermined width extending from said base portion to said terminal ends substantially parallel to said central axis.

• Assignee: Eastern Co., Naugatuck, CT (United States)
• Patent Number(s): US 5222835; A
• Application Number: PPN: US 7-887865
• OSTI ID: 6419915
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012031* -- Coal
Lignite
& Peat-- Underground Mining-- Strata Mechanics & Control-- (1987-)
BOREHOLES
CAVITIES
DESIGN
EQUIPMENT
GROUTING
JOINTS
MATERIALS
MATERIALS HANDLING EQUIPMENT
MINING
MINING EQUIPMENT
MIXING
ROOF BOLTS
SEALING MATERIALS
STRATA CONTROL
THREADED JOINTS
UNDERGROUND MINING