Resources Contact Us Home
Mine roof support and attachment means therefor

Image Number 3 for United States Patent #4605341.

Attachment means are provided for attaching a mine roof support to an abutment, (e.g. a flexible conveyor) the attachment means comprising a ram arrangement in the form of at least two rams 25, 26 operable to effect relative movement between the mine roof support and the abutment. The provision of two or more rams instead of the conventional single ram means that smaller bore rams may be used, for example a 60 mm bore as opposed to 41/4 inch bore and this makes it possible to cover or encase the rams in a protective shield without reducing the vertical space available to a miner underneath the mine roof support.

  Recently Added Patents
Data processor
Pesticidal suspo-emulsion compositions
Golf bag cart
Cytokine receptor peptides, compositions thereof and methods thereof
Transvenous method to induce respiration
Preview of next media object to play
Method for forming thin film pattern and flat display device having the same
  Randomly Featured Patents
Airlift type dredging apparatus
Fender spray shield
Bearing housing assembly method for high speed rotating shafts
Metallizable, essentially isotropic polymeric substrates well adopted for printed circuits
Hair dryer
Method and apparatus for extracting data from files
Fuel rail pulse damper
Yarn tension control apparatus and method
Ladder stabilizer apparatus
Flexible glass run with rigid molded support