Road breaking equipment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 13, 1992
Grant Date -
N/A
app pub date -
Jan 28, 1991
filing date -
Jan 28, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved apparatus for breaking hard surfaces which has a torsional spring and an oscillating member attached to the spring along the spring length and to a working tool and a hydraulic generator at either end. A tubular housing anchors the torsional spring at one end to prevent reciprocal movement and is also attached by an attachment means to the torsional reaction mass. Another tubular housing is attached to the torsional reaction mass at one end and to the bearing housing at the other.
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