Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention
Patent
1987-09-08
1989-05-09
Taylor, Dennis L.
Hydraulic and earth engineering
Earth treatment or control
Shoring, bracing, or cave-in prevention
405291, 405295, 403150, E21D 2304
Patent
active
048284335
ABSTRACT:
A roof support employs an hydraulic piston and cylinder unit as an adjustment device between the goaf shield and the roof-engaging structure. The cylinder unit is mounted to the shield with the aid of a bearing body defining a cup receiving a spherical end of the cylinder. The body also has recesses accessible via offset openings in which journals projecting from the cylinder are located. Locking pieces detachably fitted to the shield block the openings to retain the journals therein yet permit easy assembly and dismantling of the unit.
REFERENCES:
patent: 4474510 (1984-10-01), Bull
Poklekowski Helmut
Reichelt Klaus-Peter
Wojaczek Egon
Gewerkschaft Eisenhutte Westfalia GmbH
Taylor Dennis L.
LandOfFree
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 Roof supports, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roof supports will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-86349