| http://www.w3.org/ns/prov#value | - With the vibrator mass members 92' being connected so as to rotate at identical rotational speeds in opposite rotational directions, upon driving rotation of one of the drive shafts 102', it will be appreciated that all of the vibratory forces resulting from the eccentrically disposed mass members 92' during their rotation will cancel each other except the vertical components of such vibratory for
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