Power steering system including piston damping mechanism

Patent 5404961 Issued on April 11, 1995. Estimated Expiration Date:

February 4, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Power steering system for marine propulsion device
Patent #: 4744777
Issued on: 05/17/1988
Inventor: Ferguson

Power steering mechanism for marine installations
Patent #: 4892494
Issued on: 01/09/1990
Inventor: Ferguson

Power steering mechanism for vehicles, particularly motor boats Patent #: 5188051
Issued on: 02/23/1993
Inventor: Huber

Inventor

Huber, Gerhard

Assignee

Hoerbiger Ventilwerke Aktiengesellschaft

Application

No. 191544 filed on 02/04/1994

US Classes:

180/417, With fluid power assist114/144R, STEERING MECHANISM114/150, Fluid pressure440/61B, Flexible or pliant member assisted by fluid motor440/61R, Having fluid motor to move propulsion unit or a segment of the propulsion unit440/63Having link or lever to move propulsion unit or a segment of the propulsion unit

Examiners

Primary: Hill, Mitchell J.

Attorney, Agent or Firm

Watson, Cole, Grindle & Watson

International Class

B62D 005/06

Foreign Application Priority Data

1993-02-09 AT

Abstract

A power steering system (3) includes a controller (1) and a control mechanism (3), which can be operated by way of a Bowden cable (5) having a core (7) and a sheath (6). The core (7) is connected directly mechanically to the control mechanism (3), and the sheath (6) is connected hydraulically to the control mechanism (3) by way of a control valve (8) and an operating cylinder (9). To prevent oscillations in the closed control circuit of the power steering system, the sheath (6), or the control piston (15) of the control valve (8) connected thereto, is provided with a damping device (18) to dampen the axial movement of the control piston (15). The damping device provides hydraulic damping of the control piston (15).