The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 22, 1990
Filed:
Apr. 24, 1989
Thomas G Artzberger, Menomonee Falls, WI (US);
M-B-W Inc., Slinger, WI (US);
Abstract
A compaction apparatus including a pair of frames. A compaction drum is mounted for rotation on a first of the frames and resilient isolation mounts interconnect the two frames. A vibratory unit is mounted on the first frme and includes pair of eccentric weights arranged so that vertical vibratory forces generated by the weights are added, while fore-and-aft vibratory forces are cancelled. The isolation mounts are at different distances on opposite sides of a vertical plane passing through the axis of the drum, so that the vertical vibratory forces acting through the two isolation mounts produce unequal moments tending to rotate the drum and subject the soil to a shear-type action.