Variable moment vibrator usable for driving objects into the gro

Details Variable moment vibrator usable for driving objects into the gro Variable moment vibrator usable for driving objects into the gro

1992-07-14

1993-10-19

Herrmann, Allan D.

Machine element or mechanism

Mechanical movements

Rotary to or from reciprocating or oscillating

74395, 366116, 366128, 173 49, F16H 3320, E02D 718

Patent

active

052535428

ABSTRACT:
A vibrator has two series of eccentric weights each comprising at least two weights turning in opposite directions and at least one motor coupled to the first series of weights by gearing and to the second series of weights by a transmission device including a phase-shifter in the form of two coaxial shafts each comprising helical teeth and an annular piston which slides between the two shafts, delimiting therewith at least one working chamber into which a pressurized hydraulic fluid can be injected. The piston has helical teeth meshing with those on the two shafts. The vibrator enables self-regulation of the amplitude of the vibrations that it produces according to the behavior of the object to which the vibrations are imparted.

REFERENCES:
patent: 3433311 (1969-03-01), Lebelle
patent: 3564932 (1971-02-01), Lebelle
patent: 4113034 (1978-09-01), Carlson
patent: 4771645 (1988-09-01), Persson
patent: 4978488 (1990-12-01), Wallace
patent: 5010778 (1991-04-01), Riedl

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