Machine element or mechanism – Mechanical movements – Rotary to or from reciprocating or oscillating
Patent
1975-02-28
1977-07-05
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Rotary to or from reciprocating or oscillating
74 87, F16H 3300
Patent
active
040331938
ABSTRACT:
An improved rotary vibrator unit of the type comprising a first member adapted to be mounted on a shaft for rotation thereon or therewith, a mass mounted on said first member and adapted to be moved under the influence of centrifugal force during rotation of both said members and said mass in a radial direction relative to the axis of rotation thereof to unbalance the unit and cause it to vibrate, said unit further including resilient means adapted to provide a first resistance to radial movement of said mass through a first range of angular motion of said unit and including means providing a second resistance in addition to said first resistance during a second range of angular motion whereby the resistance to radial movement of said mass has a non-linear characteristic over the full range of angular motion of said unit.
REFERENCES:
patent: 2089870 (1937-08-01), Young
patent: 2738046 (1956-03-01), Kostenko
patent: 2954674 (1960-10-01), Kane
patent: 3030056 (1962-04-01), Rogers
patent: 3039758 (1962-06-01), Gratzmuller
patent: 3637174 (1972-01-01), Kuo
Herrmann Allan D.
International Combustion Australia Limited
Ratliff, Jr. Wesley S.
Weaver D. Paul
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