Earth-working machine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 24, 1988
Issued Date -
N/A
app pub date -
Oct 16, 1986
filing date -
Feb 12, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An earth-working machine includes a first internal gear fixedly mounted on a mobile chassis, a turntable coaxially rotatably mounted on the first internal gear, a carriage rotatably mounted on the turntable in eccentric relation thereto and having a second internal gear, an earth-working mechanism mounted on the carriage, a first hydraulic motor mounted on the turntable and having a first pinion held in driving mesh with the first internal gear for rotating the turntable about its own axis, a second hydraulic motor mounted on the turntable and having a second pinion held in driving mesh with the second internal gear for rotating the carriage about its own axis, and hydraulic driving devices for actuating the first and second hydraulic motors independently or in synchronism. The hydraulic driving devices may be controlled by an electric control system supplied with signals from angle detectors such as rotary encoders for detecting angular displacements of the turntable and the carriage.
First Claim
Family
International Classification(s)
Cited Art Landscape
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