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:
Dec. 15, 1981
Filed:
May. 23, 1980
Zekeriya Yargici, Roseville, MN (US);
American Hoist & Derrick Company, St. Paul, MN (US);
Abstract
An earth compacting machine includes a hollow drum rotatably mounted at each end to the machine frame to rotate on a horizontal axis, and a concentric vibratory shaft rotatably mounted at each end in a bearing which is mounted in a bearing housing fixedly mounted to the drum. A cylindrical oil sump mounted to rotate with the drum, surrounds the vibratory shaft and shaft bearings and encompasses the bearing housings. Lubrication oil in the sump covers a lower portion of the bearing housings but is below the lowest level reached by the vibratory shaft and its offset weight. Each bearing housing has a plurality of pockets provided therein open through oil access ports to the oil sump and through oil delivery ports to its associated bearing. Oil flows into a pocket when its oil access port is below the level of oil in the sump; and flows out of the pocket as the oil delivery port approaches and pass over the axis of horizontal rotation.