Steering device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Nov 23, 2004
Grant Date -
N/A
app pub date -
Mar 20, 2002
filing date -
Sep 13, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A helm pump (10) rotated either in forward or reverse direction by operating a steering wheel (13) and discharges a liquid of a quantity proportional to the rotating angle, and a double action cylinder moves a rudder (27) and is provided on rudder (27) side of the ship, helm pump (10) and the double action cylinder being connected with the hydraulic circuit of fully closed construction, to move the rudder (27) by an amount corresponding to the amount of liquid discharged from the helm pump (10). A second pump generates discharging pressure in the same direction as the discharging direction from helm pump (10) against resistive pressure generated by the rotation of helm pump (10) due to the operation of steering wheel (13) is installed in series in part of the fully closed hydraulic circuit, so the steering resistance of steering wheel (13) is automatically reduced by the action of the second pump.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully