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US 4,005,944 AGranted
Tamping apparatus
OwnerMarvin K. Harrisinventor
Life of this patent
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Abstract
An articulated tractor-type vehicle having a supporting frame including a pivotable boom to which a steerable wheel is mounted. The supporting frame carries an adjustably positionable tamping unit and an adjustably positionable trench filling unit such as a drag conveyor to provide simultaneous filling and tamping of a trench. A novel reciprocating tamping unit having increased effectiveness and reduced shock transmission is described.
Claims8
A device for tamping a trench comprising:
- a supporting means;
- a housing attached to said supporting means;
- means for providing lost motion along a substantially vertical axis between the supporting means and the housing;
- an elongated tamping shoe having an upturned portion on the forward end thereof, said tamping shoe being hingedly connected to said housing near the forward end thereof rearwardly of said upturned portion;
- a drive shaft adapted for reciprocal movement within said housing, said drive shaft extending below said housing and being pivotally connected to a rearward portion of said tamping shoe;
- and
- reciprocating drive means resiliently connected to said drive shaft for imparting reciprocal movement thereto.
4 more elements
Dependencies are inferred from the claim text.