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:
Sep. 16, 2003
Filed:
Jun. 18, 2001
Niels Laugwitz, Boppard, DE;
Bomag GmbH & Co. OHG, Boppard, DE;
Abstract
A method and a device are provided for determining the degree of compaction during ground compaction with a roller or a vibrating plate compactor comprising a top section and a vibrating plate. The method involves determination of one or more amplitude values of the vibration at approximately the excitation frequency of the plate relative to the top section, one or more amplitude values of one or more vibrations of the plate relative to the top section at a maximum of 60% of the excitation frequency, and the quotient of the aforementioned amplitude values as a measure of the current degree of compaction of the ground. The device includes a sensor for non-contact detection of the relative movements between the top section and the vibrating plate or roller.