Resonant beam for tool driving apparatus

Details Resonant beam for tool driving apparatus Resonant beam for tool driving apparatus

1979-03-30

1981-02-17

Purser, Ernest R.

Mining or in situ disintegration of hard material

Hard material disintegrating machines

Floor-working

172 40, 173 49, 299 14, A01B 3500

Patent

active

042511119

ABSTRACT:
A force transmitting, preferably resonant, beam having a pair of straight divergent legs meeting at a juncture. A work tool is located adjacent to the end of one leg, which is the beam output. A sonic oscillator is coupled to the end of the other leg, which is the beam input. The beam is supported so as to restrain the juncture from vibrating. In one embodiment, the legs form an angle of approximately 90 degrees and the beam is driven at or near its resonant frequency by the oscillator. An integral ear extends from the juncture along a plane that bisects the angle between the legs. The beam is pivotably supported at its juncture and a stop abuts the ear to position the beam output.

REFERENCES:
patent: 3563316 (1971-02-01), Shatto
patent: 3633683 (1972-01-01), Shatto
patent: 3770322 (1973-11-01), Cobb et al.

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