Dynamic cone penetration device

Details Dynamic cone penetration device Dynamic cone penetration device

1996-06-21

1997-04-01

Raevis, Robert

Measuring and testing

Hardness

By penetrator or indentor

G01N 300

Patent

active

056168330

ABSTRACT:
A dynamic cone penetration device for determining denseness of soil has reduced friction to provide more accurate testing. The device comprises a cone rod having a soil penetrating cone at one end and an anvil at the other end. The cone has a larger diameter than the cone rod, and the anvil has a striking surface for striking with a predetermined force. A rotation system containing a motor rotates the cone rod at a sufficient speed to reduce friction between the cone rod and the soil as the striking surface is struck.

REFERENCES:
patent: 2607218 (1952-08-01), Hansen
patent: 2716884 (1955-09-01), Rosenberg
patent: 2833120 (1958-05-01), Barret et al.
patent: 3946598 (1976-03-01), Towne et al.
patent: 4499954 (1985-02-01), Diggle
patent: 5313825 (1994-05-01), Webster et al.
patent: 5319959 (1994-06-01), Cooper et al.

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