Patent ID: 8561533
Filing Date: 2013-10-22
Classification: B30B

Abstract:
1. A power transmission apparatus for a compression stage in a compressor for loose packed materials the compressor having a first compression stage and a second compression stage, said power transmission apparatus comprising: a compressor piston of the second compression stage, said compressor piston being shaped to extend about at least a portion of the first compression stage and to be reciprocally movable with respect thereto; said compressor piston having a first end and a second end; said first end of said compressor piston being an output end thereof, and being shaped to conform to a co-operating mating cylinder within which said compressor piston is mounted to reciprocate in a longitudinal direction; said second end being distant from said first end; said power transmission apparatus having a power input interface at which motive force is applied to said compressor piston, said power input interface being movable; said power input interface having a fixed position relative to said first end of said compressor piston; said power transmission apparatus having a stationary reaction datum, said compressor piston being movable in longitudinal reciprocation relative to said stationary reaction datum; said power transmission apparatus having a drive transmission that is free of slack between said power input interface and said first end of said compressor piston; said power input interface being driven along a single degree of freedom of motion relative to said stationary reaction datum.