Automatic compactor

Details Automatic compactor Automatic compactor

1984-09-19

1986-07-22

Kazenske, E. R

Tool driving or impacting

Impacting devices

Hammer head driven by relatively moving motion transmitting...

173122, 173 31, 474115, B30B 938

Patent

active

046013520

ABSTRACT:
An automatic compaction assembly for compacting samples of asphaltic or bituminous materials is disclosed. A slide hammer is carried for vertical motion along a guide rod which has a compaction foot at a lower end. A drive chain is driven along a generally triangular path by a suitable drive motor and has weight engaging and raising lugs. An upper chain sprocket shuttle and a lower chain sprocket shuttle are slideably carried in a main frame of the compactor and cooperate with a drive sprocket on the drive motor to define the triangular path of chain travel. A horizontal overarm is formed as a portion of the upper shuttle and receives the upper end of the guide rod. As the guide rod moves downwardly, the release point defined by the upper shuttle also moves down thereby maintaining a constant weight drop distance during sample compaction. The slide weight, after being released from the drive chain continues to move upwardly along the guide rod until its upward travel is halted by gravity. A true free fall of the weight is thus maintained thereby satisfying testing requirements.

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