Vibrator with eccentric weights

Details Vibrator with eccentric weights Vibrator with eccentric weights

1978-04-24

1980-07-08

Scott, Samuel

Machine element or mechanism

Mechanical movements

Rotary to gyratory

366116, 366128, B06B 116

Patent

active

042111218

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. The mechanism is provided to alter the angular relationship between the weights while both shafts continue to rotate. An electric clutch is connected between the driven shaft and the hollow shaft to connect the two coaxial shafts for rotation in unison, and a brake is provided to slow the rotation of the hollow shaft after the clutch is disengaged. Thus, the angular relationship between the eccentric weights, and hence the stroke of the vibrator, can be changed.

REFERENCES:
patent: 2008296 (1935-07-01), Soldan
patent: 2852946 (1958-09-01), Petrin
patent: 2930244 (1960-03-01), Hutchinson et al.
patent: 2937537 (1960-05-01), Woll
patent: 3192839 (1965-07-01), Vivier
patent: 3640508 (1972-02-01), Reibig
patent: 3920222 (1975-11-01), Brander

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