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Match Document Document Title
7631590 Hydraulic steering arrangement  
The invention concerns a hydraulic steering arrangement (1) with a supply connection arrangement (P, T), a working connection arrangement (A, B) connectable to a steering motor (5), a steering unit...
7610935 Fluid controller  
The invention provides a fluid controller, e.g. for a hydrostatic power steering. The controller comprises a cylindrical valve member cooperating with a housing to define at least one fluid path...
7516757 Power beyond steering system  
A fluid controller (15a) in a multiple-input hydrostatic power steering system includes a check valve assembly (101), having a first fluid passage (111), defining a check valve seat (105) and a...
7490626 Steer valve with hydraulic vehicle position feedback  
A fluid controller (17) controls a main fluid path (18) from a pump (11) to a primary steering cylinder (19) and a second fluid path (26) from a fluid meter (37) to a second cylinder (31). A...
7155905 Power steering apparatus  
A power steering apparatus includes a hydraulic power cylinder, and a reversible pump driven by a motor. A steering assist sensor senses a steering assist force provided to a steering wheel. A...
7028469 Leakage compensation arrangement in a control device for a fully hydraulic steering system  
A leakage compensation system in a control device (S) has a fully hydraulic steering system (1) with a supply connection arrangement having a high-pressure connection (P) and a low-pressure...
6863147 Hydrostatic power steering device for fast steering  
Hydrostatic power steering device comprising a source of pressurized fluid, a cylindrical barrel-type distributor the elements of which are connected elastically together, and of which the inner...
6804956 Hydraulic steering system  
A hydraulic steering system (1) with a supply connection arrangement, having a high-pressure connection (P) and a low-pressure connection (T), and with a working connection arrangement (L, R), a...
6769451 Power beyond steering unit with bypass  
An open center fluid controller (15) controls the flow from a pump (11) to a steering cylinder (17) and to a downstream auxiliary device (99) requiring a predetermined minimum flow availability....
6769249 Low slip steering system and improved fluid controller therefor  
A fluid controller (27) for use with a fluid pressure operated device (45) having an inlet (47) and an outlet (49) and defining a fluid leakage path therebetween. The controller (27) includes...
6578356 Method and arrangement for hydraulic steering  
Disclosed herein is a method for hydraulic steering. The method includes supplying a steering unit with a controlled working pressure from a load signal line dependent upon a load signal. The load...
6560961 Steering system with ability to stop steering wheel rotation  
A full fluid-linked steering system includes a fluid pump (11), a fluid controller (19), a steering actuator (17), an electro-hydraulic compensation valve (21), and a vehicle microprocessor (23)....
6539710 Hydrostatic steering system having improved steering sensing  
A hydrostatic steering system of the type including a fluid controller (21) for controlling the flow of fluid from a source (11) to a steering actuator (19) in response to movement of a steering...
6490861 Hydraulic steering system  
A hydraulic steering system for a tractor is provided which can be operated in a conventional steering mode or in a fast steering mode. In conventional steering mode, a conventional steering wheel...
6484840 Hydraulic steering arrangement  
A hydraulic steering arrangement with a directional valve and a metering pump unit having two hydraulically parallel connected and mechanically parallel operable metering pumps, each having a...
6427722 Rotary slide set for a hydraulic steering arrangement  
The invention concerns a rotary slide set for a hydraulic steering arrangement with an outer rotary slide and an inner rotary slide arranged in the outer rotary slide, and having in its surface...
6318078 Fluid controller and fluid meter bypass arrangement  
A fluid controller (17) to control flow to a steering cylinder (19) is modified to include a selector valve assembly (41,73) having two operating positions. In a first position ("R" in FIG. 1), the...
6237331 Hydraulic steering arrangement  
The invention relates to a hydraulic steering arrangement (1) with a housing (4), in which an inner control slide (7) and an outer control slide (6) are arranged to be mutually rotational, forming...
6213247 Hydraulic steering device and method for steering a vehicle  
A hydraulic steering device, in particular for vehicles, is disclosed, having a housing in which two sliders are arranged to move relative to one another and together form at least one adjustable...
6131389 Hydrostatic steering device with two steering systems  
A hydrostatic steering device having substantially identical first and second steering systems, each including a pump connected to a steering unit, which is connected to a steering motor by two...
6076349 Hydrostatic automotive or high speed steering system  
A full fluid-linked steering system, especially for use in on-highway steering, in which the system includes a fluid controller (21) including a fluid meter (65) operable to provide follow-up...
6016656 Hydraulic control device  
A hydraulic control device is disclosed, having a pressure connection and a tank connection and having a metering pump unit (4) that comprises at least two metering pumps (5, 6) connected...
5992458 Load reaction steering unit for unequal area cylinder  
A fluid controller (15) of the type which controls the flow of fluid to an unequal area steering cylinder (25), wherein the controller is of the load reaction type. The controller (15) includes...
5975138 Fluid controller with improved follow-up  
A fluid controller (15) of the type having a primary, spool valve (43) and a followup, sleeve valve (45) which define a relative neutral position (FIG. 1) and first and second maximum, opposite...
5970708 Hydraulic steering assembly with change in transmission ratio and flow amplification  
In order to continuously change the transmission ratio between power-assisted steering mode and emergency steering mode and to maximize the flow of hydraulic oil in the power-assisted steering mode...
5960694 Hydrostatic power steering system having reduced wheel slip  
A hydrostatic power steering system comprising a fluid motor (19) which receives pressurized fluid from a controller (17) in response to the rotation of a vehicle steering wheel (W). As the motor...
5947228 Hydraulic power steering system for a vehicle  
A hydraulic power steering system for a vehicle comprising a hydraulic fluid displacement pump, operated by a thermal engine of the vehicle and provided with a suction port and a delivery port, a...
5887429 Hydraulic steering system with load signal  
Conventional steering systems of this type have the disadvantage that the dynamic load signal flow is lossy which has a negative effect on the energy efficiency. Another disadvantage arises in...
5873243 Torque generator steering device  
A torque generator steering device (11) including a gerotor gear set (17) disposed adjacent an end cap (15) and having the input shaft (21) extending through the end cap and through the orbiting...
5819532 Dynamic load signal fluid controller with instant on flow amplification  
A fluid controller (17) of the dynamic load sensing and flow amplification type, and including a main fluid path (35,39) having a main variable flow control orifice (43), and a fluid meter (37)....
5806561 Hydraulic control arrangement  
A hydraulic control arrangement is disclosed having a directional valve, a metering pump unit which has two metering pumps which are connected hydraulically in parallel and are operable...
5799694 Steering control unit  
A fluid controller (11) of the type comprising a rotatable spool valve (31) and a relatively rotatable follow-up sleeve valve (33), in which fluid flows through a fluid meter (15) of the type in...
5771692 Hydraulic steering unit with load signal  
A steering system having a first auxiliary branch line (23, 24) connecting a main line (6) to a return port (12); with a load line (22) connecting the first auxiliary branch line to a load port...
5701970 Device for controlling the pressure to be supplied to a hydrostatic steering unit  
In a device for controlling the pressure to be supplied to a hydrostatic steering unit (1) by means of a control signal (s), there is a rotary slide valve arrangement, one slide valve element of...
5638864 Steering control unit with flow amplification for unequal area cylinder  
A fluid controller (15) for use with an unequal area cylinder (25) having a rod end area A and a head end area B. The controller valving (27) includes, in one embodiment, a flow amplification path...
5634495 Wide angle controller with dual function check valves  
A fluid controller (17) having a housing (21) and valving including a spool (41) and a follow-up sleeve (43). The spool and sleeve define a central reference plane (RP) with the housing having two...
5620026 Fluid controller and improved backflow prevention therefor  
A fluid controller (17) is disclosed of the type including a relatively rotatable valve spool (95) and valve sleeve (97) which define a series of variable control orifices (71-76) during normal...
5511457 Steering control system for an autonomous machine  
A steering control system for an autonomous machine has a manual steering control valve for directing fluid from a pump to either a head end chamber or a rod end chamber of a hydraulic steering...
5471907 Marine steering apparatus  
A fluid power apparatus is connected to a pressurized fluid supply and a conventional helm pump controlled by the helm of a vessel to shift the rudder. The apparatus comprises an actuator cylinder...
5450916 Power-assisted steering device  
An auxiliary power source, for example, an electric motor, supplies the power assist for a steering unit via a worm gear (15, 16). The worm gear (15, 16) drives clutch hubs (22 and 23) in the...
5404722 Torque generator with reduced backlash  
A torque generator steering device (10) is disclosed of the type including a gerotor displacement mechanism (19) and valving (9), by the rotation of an input shaft (1) results in a hydrostatic...
5390693 Flow amplifier  
A flow amplifier (1) with an inlet (4) and an outlet (5) is provided, between which a first branch (6), through which a flow of a fluid to be amplified is flowing, with a first throttling device...
RE34746 Open-center steering control unit with flow amplification  
An open-center fluid controller (15) is disclosed for controlling the flow of fluid to a steering cylinder (25). The controller includes a fluid meter (29) and valving arrangement (27), including a...
5329766 Hydraulic power steering system with input detection capability  
A hydrostatic power steering system is provided of the type including a steering control unit (3) operated by an input such as a steering wheel (1) to control flow from a source (8) to a steering...
5303636 Fluid controller and logic control system for use therewith  
An improved fluid controller (15) is provided having both rotary valving (47) actuated by the steering wheel (17), and axial valving (49) controlled by an electro-hydraulic valve (113) in response...
5287792 Hydraulic power steering gear with noise attenuation  
A hydraulic power steering apparatus (10) comprises a rotatable input member (31), a rotatable output member (130), and a housing supporting (11) the input member (31) and the output member (130)...
5263321 Control arrangement for a fully-hydraulic steering system  
The control arrangement may be used for vehicles or in other steering systems and includes a steering motor that is adjusted as a function of hand operated steering mechanism, the steering...
5244052 Steering control unit for multiple steerable axles  
A hydraulic steering system is provided including a hydraulic steering unit (3) provided with a housing (6) having an inlet port (7), an outlet port (8), and a pair of control ports L and R. A...
5207780 Hydraulic valve device for automotive power steering gear  
A power steering device for a motor vehicle whereby when the vehicle is under a high or middle speed movement, the slide torque is controlled to a relatively low constant level irrespective of the...
5186212 Fluid controller having axial modulation  
A fluid controller (11) is disclosed of the type including a housing (13), a fluid meter (17), a primary (spool) valve (35), and a follow-up (sleeve) valve (37). An inlet port (23) is in...
Matches 1 - 50 out of 194 1 2 3 4 >