Impact tool
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 1, 1980
Grant Date -
N/A
app pub date -
Jan 5, 1978
filing date -
Jan 5, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved impact tool which has a cylinder, a liner mounted therein, a piston mounted in the liner and reciprocated by gas and hydraulic pressure, and a tubular valve slidably mounted on the liner for controlling a hydraulic circuit. The tubular valve is hydraulically pushed up and down without a spring being used. No gas accumulator is used. Thus, the impact tool has a simple construction and is durable.
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Family
International Classification(s)
Cited Art Landscape
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