Channel and bearing plate assembly

Details Channel and bearing plate assembly Channel and bearing plate assembly

1999-01-13

2000-11-14

Lillis, Eileen D.

Hydraulic and earth engineering

Earth treatment or control

Shoring, bracing, or cave-in prevention

405288, 411545, 411531, E21D 2100, F16B 4300

Patent

active

061460567

ABSTRACT:
A double ribbed bearing plate for use with a channel member in supporting a mine roof. The bearing plate includes a base with ribs in the bearing plate define recesses which receive flanges on the channel. The longitudinal edges of the bearing plate may extend below the plane of the base. When installed on a mine roof, the longitudinal edges may be spread apart upon changes in the load applied by the mine roof.

REFERENCES:
patent: Re35902 (1998-09-01), Calandra, Jr. et al.
patent: 2854824 (1958-10-01), Curry et al.
patent: 3090203 (1963-05-01), Durget
patent: 3224202 (1965-12-01), Durget
patent: 4037418 (1977-07-01), Hannan
patent: 4249835 (1981-02-01), White
patent: 4439065 (1984-03-01), Constapel
patent: 4498815 (1985-02-01), Dye
patent: 4507020 (1985-03-01), Zeitler et al.
patent: 4708559 (1987-11-01), Locotos
patent: 5292209 (1994-03-01), Calandra, Jr. et al.
patent: 5385433 (1995-01-01), Calandra, Jr. et al.
patent: 5791828 (1998-08-01), Fergusson
"Jennmar's #5 mine Steel Roof Channels", Frank Calandra Inc. (1 p.) (undated).
"W Straps", Arnalls Engineering Pty. Limited (1 p.) (undated).

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