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:
Oct. 23, 2018
Filed:
Feb. 13, 2018
Applicant:
Volvo Construction Equipment Ab, Eskilstuna, SE;
Inventors:
Michael Macdonald, Shippensburg, PA (US);
Christopher Grove, Fayetteville, PA (US);
Assignee:
Volvo Construction Equipment AB, Eskilstuna, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E01C 19/28 (2006.01); E01C 19/38 (2006.01); F16C 3/20 (2006.01); F16F 15/22 (2006.01);
U.S. Cl.
CPC ...
E01C 19/286 (2013.01); E01C 19/38 (2013.01); F16C 3/20 (2013.01); F16F 15/223 (2013.01); E01C 2301/00 (2013.01); F16F 2232/02 (2013.01);
Abstract
A vibratory compactor includes a drum, a frame supporting the drum, an eccentric shaft configured to be rotated by a vibration motor, and a primary eccentric weight attached to the eccentric shaft inside the drum. At least one active isolation eccentric weight is located outside the drum so that when the eccentric shaft is rotated, a phase of a vibration generated by the at least one active isolation eccentric weight is substantially opposite to that of a vibration generated by the primary eccentric weight.