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. 21, 1982
Filed:
Mar. 21, 1980
Applicant:
Inventors:
Lynn A Schmelzer, Kewanee, IL (US);
W Thomas Fouser, Kewanee, IL (US);
Assignee:
Hyster Company, Portland, OR (US);
Primary Examiner:
Int. Cl.
CPC ...
E01C / ;
U.S. Cl.
CPC ...
404117 ; 74 87 ; 464179 ;
Abstract
A vibratory compactor vehicle includes a roller drum provided with internal concentrically mounted eccentric weights which are rotated for imparting vibration to the drum. The weights are mounted upon concentric shafts of helical polygonal shape having mating, helically ribbed and grooved surfaces, whereby longitudinal movement of one of the shafts with respect to the other brings about relative rotation of the weights, thereby changing the amplitude of the resulting vibration.