Hydraulic steering system for boats
阅读：333发布：2022-11-02
专利汇可以提供Hydraulic steering system for boats专利检索，专利查询，专利分析的服务。并且Steering system includes a pump mechanism wholly contained within the master unit which is the steering wheel shaft mount in front of the dash panel, and has a porting plate protruding behind the dash panel to a slight extent sufficient to provide room for connection of fittings thereto and attachment of the master unit to the dash panel. The slave unit for the steering system is mounted in the stern of the boat and may contain the valving for controlling fluid flow between the pump mechanism and slave unit, thereby reducing the mounting space required if the valving were contained in the master unit. Locating the valving in the slave unit also provides the safety feature that if there is a loss of fluid pressure in the system due to line breakage between the master and slave units, the slave unit will be locked against movement preventing complete loss of control and wild gyrations of the boat.，下面是Hydraulic steering system for boats专利的具体信息内容。
1. A hydraulic control system comprising a master unit, a slave unit, and a pair of fluid lines interconnecting said master and slave units, said master unit including pump means for selectively supplying fluid under pressure to one of said lines and venting the other of said lines, and said slave unit comprising a cylinder containing a chamber, a piston axially movable within said chamber, passages in said cylinder providing communication between said fluid lines and the ends of said chamber, check valves in said cylinder associated with said passages responsive to fluid pressure in said fluid lines to permit fluid flow from said pump means to said chamber through said passages, and means in said cylinder responsive to the fluid pressure in one of said passages to open the check valve associated with the other passage for return flow of fluid from said chamber to said pump means, said last-mentioned means comprising a shuttle valve operating piston having sliding sealed engagement in a bore in said cylinder, said check valves being contained in said bore in spaced relation from the ends of said shuttle valve operating piston, said passages being interrupted by said bore requiring flow through said check valves, said shuttle valve operating piston having stem portions projecting from the ends thereof for opening of said check valves when urged thereagainst by high fluid pressure acting on the opposite end of said shuttle valve operating piston, said bore containing said check valves and shuttle valve operating piston therebetween extending longitudinally through the head end of said cylinder providing direct communication with the head end of said cylinder, and an end plate attached to the head end of said cylinder covering the outer end of said bore.
2. The hydraulic system of claim 1 further comprising snap rings in said bore for limiting the movement of said shuttle valve operating piston toward said check valves to avoid blocking communication between said check valves and passages by said shuttle valve operating piston.
3. The hydraulic system of claim 1 further comprising a pair of bleed ports in said cylinder communicating with said bore intermediate said check valves and the adjacent ends of said shuttle valve operating piston, and needle valves contained within said bleed ports permitting controlled bleeding of said system.
4. The hydraulic system of claim 1 further comprising a mounting shaft having a ball joint on one end, said head end of said cylinder having a socket for receipt of said ball joint to permit pivotal movement of said cylinder relative to said mounting shaft.
5. The hydraulic system of claim 1 wherein said master unit comprises a housing, a drive shaft extending into one end of said housing and journaled therein for rotation, said pump means being wholly contained within said housing, means connecting said pump means to said drive shaft for actuation thereby, and a porting plate for said pump means secured to the other end of said housing, said porting plate containing passages for connection to said fluid lines.
6. The hydraulic system of claim 5 wherein said porting plate has an outer diameter less than the outer diameter of said housing for receipt in an opening in a mounting support with the other end of said housing engaging the front side of said mounting support, and means for securing said housing and porting plate to said mounting support with said other end of said housing engaging the front side of said mounting supPort and said porting plate extending into the opening in said mounting support as aforesaid.
7. The hydraulic system of claim 6 wherein said means for securing said housing and porting plate to said mounting support comprises a channel member disposed behind said mounting support and having a length greater than the opening in said mounting support for said porting plate, and fastener means extending through said channel member into tapped openings in said porting plate.
8. The hydraulic system of claim 7 wherein said channel member is of a width less than the spacing between said passages in said porting plate and is disposed therebetween with said fluid lines connected to said passages on opposite sides of said channel member.
9. A hydraulic control system comprising a master unit, a slave unit, and a pair of fluid lines interconnecting said master and slave units, said master unit comprising a housing, a drive shaft extending into one end of said housing and journaled therein for rotation, pump means wholly contained within said housing for selectively supplying fluid under pressure to one of said lines and venting the other of said lines, means connecting said pump means to said drive shaft for actuation thereby, and a porting plate for said pump means secured to the other end of said housing, said porting plate containing passages for connection to said fluid lines, said porting plate having an outer diameter less than the outer diameter of said housing for receipt in an opening in a mounting support with the other end of said housing engaging the front side of said mounting support, and means for securing said housing and porting plate to said mounting support with said other end of said housing engaging the front side of said mounting support and said porting plate extending into the opening in said mounting support as aforesaid, said means for securing said housing and porting plate to said mounting support comprising a channel member disposed between said mounting support and having a length greater than the opening in said mounting support for said porting plate, and fastener means extending through said channel member into tapped openings in said porting plate, said channel member being of a width less than the spacing between said passages in said porting plate and disposed therebetween with said fluid lines connected to said passages on opposite sides of said channel member.
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