Hydraulic steering system
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United States of America Patent
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-
Aug 8, 2017
Grant Date -
Nov 17, 2016
app pub date -
May 5, 2016
filing date -
May 13, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A hydraulic steering system (1) is described comprising a steering unit (3) and a pressure source (4), said steering unit (3) comprising a working port arrangement (L, R) having two working ports, a supply port arrangement having a high pressure port (P) and a low pressure port (5), a main flow path (7) having a main bleed (A1) and a metering device (8) and being arranged between said high pressure port (P) and said working port arrangement (L, R), an amplification flow path (9) having an amplification bleed (Au) and being arranged between said high pressure port (P) and said working port arrangement (L, R), said main bleed (A1) and said amplification bleed (Au) being controlled together by means of a steering handle (6) and being closed in neutral position of said steering handle, and said pressure source (4) having a variable displacement.
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