Mine roof support plate bolt

Details Mine roof support plate bolt Mine roof support plate bolt

1989-05-18

1990-07-10

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405260, E21D 2002

Patent

active

049403656

ABSTRACT:
A mine roof support plate bolt formed from an elongated rod has a head and flange at one end, and a helical channel adjacent the other end, the rod having a threaded section adjacent the channeled section and an expansion anchor engaged on the threaded section. The channeled section of the rod has a length greater than the length of the expansion anchor such that a major portion of the channeled section is exposed regardless of the positioning of the expansion anchor on the threaded section.

REFERENCES:
patent: 3188815 (1965-06-01), Schuermann et al.
patent: 4132080 (1979-01-01), Hansen
patent: 4275975 (1981-06-01), Morgan
patent: 4313697 (1982-02-01), Rozanc

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