Hydraulic and earth engineering – Earth treatment or control – Rock or earth bolt or anchor
Patent
1986-07-30
1987-03-24
Scanlan, Jr., Richard J.
Hydraulic and earth engineering
Earth treatment or control
Rock or earth bolt or anchor
411531, E21D 2100
Patent
active
046521780
ABSTRACT:
The plate has the plate material in-turned, about the central, roof bolt or friction rock stabilizer aperture, to form a tubular wall thereat. Accordingly, the rim of the aperture is made stronger and the plate, therefore, is capable of supporting a considerable loading.
REFERENCES:
patent: D275452 (1984-09-01), Payne
patent: 3238731 (1966-03-01), Seifert et al.
patent: 3244055 (1966-04-01), Schuermann et al.
patent: 4126004 (1978-11-01), Lindeboom
patent: 4371293 (1983-02-01), Wilcox et al.
patent: 4445808 (1984-05-01), Arya
patent: 4518282 (1985-05-01), Wilcox et al.
Chyb Mario
Kates Richard
Ingersoll-Rand Company
Murphy Bernard J.
Scanlan, Jr. Richard J.
Stodola Nancy J.
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