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. 14, 1976
Filed:
Oct. 15, 1974
George D Herbst, Milwaukie, OR (US);
Hyster Company, Portland, OR (US);
Abstract
A self-propelled vibratory compactor has a one-piece frame supported at one end by a steel roller drum and at the other end by a yoke-mounted, single, high-flotation pneumatic rubber tire. An engine on the frame drives hydraulic pumps which supply fluid to a hydraulic vibrator motor which drives an eccentric shaft within the roller drum, a hydraulic wheel motor which drives the pneumatic tire, and a hydraulic power steering system for turning the yoke. The yoke spindle mounts a rotary seal which transmits fluid between a pump on the frame and the wheel motor on the yoke. A special clamp-type drive wheel assembly mounted the pneumatic tire to resist slippage of the tire on the wheel assembly.