Power steering system
DCFirst Claim
1. An in-line power steering system for a marine vehicle comprising a propulsion unit pivotal about a steering axis, steering means for applying torque to said propulsion unit to effect steering movement thereof about said steering axis and including an operator actuable steering helm and a steering member connected to said propulsion unit;
- power steering assist means having a reciprocating mechanical output force and operably connected to, and operably interposed between, said steering helm and said propulsion unit and mounted remote from said propulsion unit;
a first actuable steering means operably connected (a) to said steering helm and actuated in response to steering actuation at said steering helm and (b) to said power steering assist means to effect actuating input to said power steering assist means upon actuation at said steering helm; and
a second actuable steering means for accepting said mechanical output force and operably connected to said power steering assist means and to said steering member for overcoming torque on said propulsion unit relative to said steering axis in response to actuation of said second actuable steering means, said second actuable steering means providing actuable output transmitted from said power steering assist means to effect common movement of said steering member in response to steering actuation of said steering helm to pivot said propulsion unit about said steering axis.
3 Assignments
Litigations
0 Petitions
Accused Products
Abstract
An in-line power steering system for a marine vehicle having a propulsion unit, including a steering arm, to effect steering movement thereof about a steering axis, and an operator actuable steering helm. A first actuable steering member, such as a mechanical push-pull cable, is operably connected to the steering helm and actuated in response to steering actuation at the helm. A power steering assist unit, operably connected to the first steering member, comprising a hydraulic cylinder-piston assembly and hydraulic fluid source is interposed between the steering helm and the first actuable steering member and mounted remote from the propulsion unit, and further is hydraulically actuated in response to steering actuation at the steering helm. An actuator for regulating the flow of hydraulic fluid through the power steering assist unit is operably connected to the first actuable steering member. A second actuable steering member, such as a mechanical push-pull cable, is operably connected to the power steering assist unit and to the steering arm for overcoming torque on the propulsion unit relative to the steering axis for effecting common movement of the steering member in response to steering actuation at the steering helm to pivot the propulsion unit about the steering axis.
18 Citations
37 Claims
-
1. An in-line power steering system for a marine vehicle comprising a propulsion unit pivotal about a steering axis, steering means for applying torque to said propulsion unit to effect steering movement thereof about said steering axis and including an operator actuable steering helm and a steering member connected to said propulsion unit;
- power steering assist means having a reciprocating mechanical output force and operably connected to, and operably interposed between, said steering helm and said propulsion unit and mounted remote from said propulsion unit;
a first actuable steering means operably connected (a) to said steering helm and actuated in response to steering actuation at said steering helm and (b) to said power steering assist means to effect actuating input to said power steering assist means upon actuation at said steering helm; and
a second actuable steering means for accepting said mechanical output force and operably connected to said power steering assist means and to said steering member for overcoming torque on said propulsion unit relative to said steering axis in response to actuation of said second actuable steering means, said second actuable steering means providing actuable output transmitted from said power steering assist means to effect common movement of said steering member in response to steering actuation of said steering helm to pivot said propulsion unit about said steering axis. - View Dependent Claims (2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 30, 31, 32)
- power steering assist means having a reciprocating mechanical output force and operably connected to, and operably interposed between, said steering helm and said propulsion unit and mounted remote from said propulsion unit;
- 7. An in-line power steering system for a marine vehicle comprising a propulsion unit pivotal about a steering axis, steering means for applying torque to said propulsion unit to effect steering movement thereof about said steering axis and including an operator actuable steering helm and a steering member connected to said propulsion unit, a first actuable steering means operably connected to said steering helm and actuated in response to steering actuation at said steering helm, power steering assist means interposed between said steering helm and said propulsion unit and mounted remote from said propulsion unit and hydraulically actuated in response to steering actuation at the steering helm, actuating means for regulating the flow of hydraulic fluid through said power steering assist means and operably connected to said first actuable steering means, and a second actuable steering means comprising a push-pull cable having a flexible sheath and inner core axially slidable in said sheath, said inner core of said second cable having a first end operably connected to said power steering assist means for overcoming torque on said propulsion unit relative to said steering axis in response to axially slidable movement of said inner core of said second cable, and said inner core of said second cable having a second end operably connected to said steering member for effecting common movement of said steering member in response to axial slidable movement of said inner core of said second cable upon steering actuation of said steering helm to pivot said propulsion unit about said steering axis.
-
22. An in-line power steering system for a marine vehicle comprising a propulsion unit pivotal about a steering axis, steering means for applying torque to said propulsion unit to effect steering movement thereof about said steering axis and including an operator actuable steering helm and a steering member connected to said propulsion unit;
- a first actuable steering means operably connected to said steering helm and actuated in response to steering actuation at said steering helm;
power steering assist means interposed between said steering helm and said propulsion unit and mounted remote from said propulsion unit and hydraulically actuated in response to steering actuation at the steering helm;
said power steering assist means comprises a hydraulic cylinder-piston assembly having a piston reciprocally mounted in said cylinder, hydraulic fluid source means including means for delivering pressurized hydraulic fluid to said cylinder-piston assembly, fluid communication means for providing communication between said cylinder-piston assembly and said fluid source means, valve control means disposed in said cylinder-piston assembly biased to a closed position for a no steering change position and adapted to establish fluid communication between said cylinder-piston assembly and said fluid source means, actuating means operably connected to said cylinder-piston assembly and to said first actuable steering means to control the flow of hydraulic fluid delivered from said fluid source means and to selectively actuate said valve control means to establish said fluid communication upon steering actuation, whereby hydraulic fluid is delivered from said hydraulic fluid source means to said hydraulic fluid cylinder-piston assembly, and connecting means operably connected to said piston; and
a second actuable steering means operably connected to said connecting means and to said steering member for overcoming torque on said propulsion unit relative to said steering axis in response to actuation of said second actuable steering means, said second actuable steering means providing actuatable output to effect common movement of said steering member in response to steering actuation of said steering helm to pivot said propulsion unit about said steering axis. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
- a first actuable steering means operably connected to said steering helm and actuated in response to steering actuation at said steering helm;
-
33. A power steering system especially useful for a marine vehicle having operator steering actuation and adaptable for mounting in-line remote from the propulsion unit of the vehicle, comprising:
- a cylinder-piston assembly having a cylinder with an open end, a reciprocally mounted piston in said cylinder, an annular ram rod having a central bore extending coaxially in said cylinder from said piston through said open end of said cylinder and mounted for reciprocative movement, hydraulic fluid source means including means for delivering pressurized hydraulic fluid to said cylinder-piston assembly, fluid communication means for providing communication between said cylinder-piston assembly and said fluid source means, valve control means disposed in said piston biased to a closed position for a no steering change position and adapted to establish fluid communication between said cylinder-piston assembly and said fluid source means, rod member having opposed ends extending coaxially of said central bore and operably connected at a first end to said valve control means, actuating means to control the flow of hydraulic fluid delivered from said fluid source means, said actuating means operably connected to said rod member at its second end and to said ram rod to selectively actuate said valve control means to establish said fluid communication upon steering actuation.
- View Dependent Claims (34, 35, 36, 37)
Specification