Vibrator with eccentric weights
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United States of America Patent
Stats
-
Sep 15, 1981
Issued Date -
N/A
app pub date -
Mar 19, 1979
filing date -
Apr 24, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Two eccentric weights of a vibrator are mounted, respectively, on two coaxial shafts, one of which is a hollow shaft mounted on the other shaft. The two shafts can be connected for rotation in unison, and can be separated for relative rotation to alter the angular relationship between the weights. Mechanism is provided to alter the angular relationship between the weights while both shafts continue to rotate. The hollow shaft and the other shaft are connected, respectively, to one end of two beveled gear trains which can rotate as a unit about the axis of the shafts. By changing the angular relationship between the gears at the other end of the gear trains, the angular relationship between the eccentric weights, and hence the stroke of the vibrator, can be changed.
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