Resin reinforced expansion anchor system

Patent · Tue Aug 16 00:00:00 EDT 1988

OSTI ID:6682218

Clark, C A; Wright, R L

An expansion anchor assembly is described in combination with a dual compartment resin and cartridge inserted into a mine roof opening, the anchor assembly including: (a) an elongated bolt having a head at one end and threaded for a portion of its length at the other end; (b) an expansion member engaged with the threaded end of the bolt; (c) the expansion member including an expansion shell having a plurality of leaf segments; (d) a first means for engaging the expansion shell with the elongated bolt; (e) a wedge threaded on the elongated bolt for engagement with the expansion shell to urge the latter into gripping engagement with the mine roof; (f) a first resin passageway means on the outer surface of the wedge for permitting resin to gravitate therethrough; (g) the leaf segments of the expansion shell being separated to form a second resin passageway means aligned with the first resin passageway means, whereby resin may gravitate downwardly through substantially the entire length of the assembly, and (h) a second means within the first passageway and engageable with one of the leaf segments to prevent relative rotation of the wedge member with respect to the expansion shell; (i) the resin being mixed upon rotation of the bolt and expansion member and gravitating downwardly through the first and second passageway means into engagement with that portion of the mine roof defining the mine roof opening.

• Assignee: Birmingham Bolt Co., Inc., Birmingham, AL
• Patent Number(s): US 4764055
• OSTI ID: 6682218
• Resource Relation: Patent File Date: Filed date 23 Sep 1987
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ANCHORS
RESINS
ROCKS
SUPPORTS
ROOF BOLTS
UNDERGROUND MINING
STRATA CONTROL
COAL MINING
EXPANSION
ROCK MECHANICS
ROOFS
SEALS
EQUIPMENT
MECHANICAL STRUCTURES
MECHANICS
MINING
MINING EQUIPMENT
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
012031* - Coal
Lignite
& Peat- Underground Mining- Strata Mechanics & Control- (1987-)