Patent ID: 6386114
Filing Date: 2002-05-14
Classification: E01B

Abstract:
A split tool tamper comprising:a motor; a frame;, said motor coupled to said frame; a single tool shaft having a first end and a second end; a said first end coupled to said motor; a tamping tool; said tamping tool coupled to said second end; said motor is pivotably coupled to said frame by a generally horizontal pivot; said motor is further coupled to said frame by an extension member attached to said motor at a location spaced apart from said pivot; said motor provides a generally reciprocating rotational motion to said tool shaft; said motor is coupled to said tool shaft by a conversion device; said motor includes a housing and a rotating shaft; said conversion device includes: an eccentric hub having a medial opening and a circular sidewall; said hub sidewall having an eccentric recess said axle passing through said medial opening and coupled to said hub; a yoke having a shaft and a pivot pin; said yoke shaft disposed in said hub eccentric recess; a clevis disposed at said tool shaft first end; said clevis coupled to said yoke pivot pin; and said tool shaft is supported by at least two bearings in said housing.