Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Patent
1984-05-29
1987-03-31
Schran, Donald R.
Tool driving or impacting
Drive by means reacting to rotating eccentric mass
175 55, 405184, E02D 718
Patent
active
046535942
ABSTRACT:
A vibration generating apparatus including a support body having a first center axis, a first spherical joint element provided at a forward end of the support body and having the center of a sphere located on the first center axis, a vibrating body having a second center axis passing through the sphere center, a second spherical joint element provided on the vibrating body and concentric complementary with the first spherical joint element to cooperate therewith to allow the vibrating body to be supported on the support member for universal movement, a rotary shaft coaxially rotatably supported within the vibrating body, a pair of eccentric weights mounted on the rotary shaft with a phase deviation of 180 degrees and in a manner symmetrical with respect to the sphere center, and a drive motor connected to the rotary shaft for driving same for rotation whereby the pair of eccentric weights are rotated about the second center axis to cause the vibrating body to move in conical motion vibration such that the second center axis describes a circular cone having a vertex located at the sphere center about the first center axis.
REFERENCES:
patent: 658516 (1900-09-01), Smith
patent: 2475385 (1949-07-01), Frisco
patent: 2951681 (1960-09-01), Degen
patent: 3800889 (1974-04-01), Bauer
patent: 3926267 (1975-12-01), Svirschevsky et al.
Ae Osamu
Iwai Yoshiyuki
Miyanagi Naoki
Nakano Manabu
Ogata Kojiro
Hitachi
Nippon Telegraph & Telephone Public Corporation
Schran Donald R.
Wolfe James L.
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