Method and apparatus for driving a single transversely elongated

Mining or in situ disintegration of hard material – Processes – Directly applying heat or vibration

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37DIG18, 172 40, 173 49, 173101, 299 37, A01B 3500

Patent

active

042589568

ABSTRACT:
An elongated tool is mounted for reciprocal motion on a support frame. A plurality of resonant force transmitting beams each having an input, an output, and at least one resonant node, are supported by the frame so their outputs are spaced apart adjacent to the length of the tool. A sonic generator operating at or near the resonant frequency of the beams is coupled to the beam inputs to produce at the beam outputs resonant vibration about a neutral position. Each beam is pivotally mounted for rotation about its resonant node and such rotation is rigidly limited such that the spacing between the neutral position of the output of each beam and the tool is the same, which synchronizes coupling of force from the beam outputs to the tool. The pivotal node support comprises a closed hollow annular elastic housing and a fluid filling the housing.

REFERENCES:
patent: 3628265 (1971-12-01), Galis
patent: 3633683 (1972-01-01), Shatto
patent: 3770322 (1973-11-01), Cobb et al.
patent: 3966344 (1976-06-01), Haker et al.

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