Vibrator with eccentric weights

Details Vibrator with eccentric weights Vibrator with eccentric weights

1979-03-19

1981-09-15

Staab, Lawrence J.

Machine element or mechanism

Mechanical movements

Rotary to or from reciprocating or oscillating

74665GB, 74665K, 74777, 74799, F16H 3300, F16H 130

Patent

active

042890420

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.

REFERENCES:
patent: 1262817 (1918-04-01), McCreary
patent: 2078715 (1937-04-01), Lurz et al.
patent: 2573764 (1951-11-01), Green

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