Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1986-10-20
1987-11-24
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
405291, 403348, 403353, E21D 2304
Patent
active
047085312
ABSTRACT:
A mine roof support has gap seals in the form of L-shaped plates on its roof cap and goaf shield. The side walls of the plates overlap at the junctures between the roof cap and the goaf shield and these walls are interconnected with pivot connections each of which is composed of complementary components fitted into openings in the walls. The components combine to form a pivot journal and and are locked to one another by a twist catch which can be released by relative rotation of the components.
REFERENCES:
patent: 2165163 (1939-07-01), Waters
patent: 2744771 (1956-05-01), Laurent
patent: 3017217 (1962-01-01), Keating
patent: 3860209 (1975-01-01), Strecker
patent: 4125339 (1978-11-01), Pittinger, Sr. et al.
patent: 4197762 (1980-04-01), Yamana
patent: 4236850 (1980-12-01), Koppers et al.
patent: 4293247 (1981-10-01), Rosenberg et al.
patent: 4392279 (1983-07-01), Schwager
patent: 4400856 (1983-08-01), Tseng
patent: 4552487 (1985-11-01), Weirich
Gewerkschaft Eisenhutte Westfalia GmbH
Taylor Dennis L.
LandOfFree
Pivot connections for use with mine roof supports does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pivot connections for use with mine roof supports, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pivot connections for use with mine roof supports will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2422219