Abstract: A hydraulic distributor that has a regulating balance including a housing hollowed in the distributor body and containing coaxially a fixed central core. A tubular plunger is interposed sliding freely, coaxially, between the core and the housing and co-operates with a lateral orifice connected to a working orifice. The core and the plunger define between them an annular chamber. The plunger has a first radial annular surface subjected to the highest charge pressure (LS) and a second annular surface subjected to the pressure of the intake fluid. A central passage in the core constitutes a first orifice emerging at one end of the housing exposed to the highest charge pressure (LS). A second orifice emerges in the annular chamber and a third orifice is located opposite the other end of the housing and remains closed by the plunger as long as the charge pressure of the distributor is below the highest charge pressure (LS).

Abstract: A hydraulic directional control valve with a regulating balance comprising a plunger which can be displaced in a housing (13) under the action of a differential pressure (&Dgr;p) between the intake pressure (P) and the highest load pressure (LS), and which is designed to open, in proportion to this differential (&Dgr;p), a lateral orifice of the housing linked to a working orifice (A, B) of the directional control valve; the wall of the housing and/or the plunger is provided with a calibrated passage linking the intake of fluid at pressure (P) and the lateral orifice when the plunger is pushed back into an end position by the pressure (LS) exceeding the intake pressure (P); consequently, in spite of the excess value of the pressure (LS) intended to inhibit operation of the directional control valve, hydraulic fluid is delivered to the lateral orifice at a low rate and allows the hydraulic receiver controlled by the hydraulic directional control valve to be displaced at a low rate.

Abstract: Manually-operated remote-control device, especially hydraulic manipulator, comprising: a body (1) containing at least one moving signal-generating member, controlled by a push-rod (2) projecting above the body (1) and movable by a rocking cam (4) fixed to the top of the body (1); means (5) of rotary articulation, comprising a fixed clevis mount (5a) secured to the body (1) and a moving clevis mount (5b) secured to the cam (4), these clevis mounts (5a, 5b) being coupled together so as to allow the cam (4) to rock with respect to the body (1); a base (6) secured to this cam and supporting an operating handgrip (7); characterized in that the moving clevis mount (5b) of the articulation means, the cam (4) and the base (6) are constructed in the form of a single monobloc component (14).

Abstract: Manually operated remote control device comprising a body (1) enclosing at least one movable member generating a signal associated with an axially movable pushrod (2) projecting upwards from the body (1); a fixing plate (3) closing the top of the body and provided with at least one drilling (5) through which the abovementioned pushrod passes; a rocking cam (6) fixed to the top of the body (1) so as to cooperate with the projecting end of the pushrod (2) and control the movement of the latter; a grip (9, 10) secured to the cam (6) and incorporating at least one electric control member (11) to which is connected an electrical cable (12) passing through the abovementioned fixing plate (3) via an opening (13) in the latter; the opening (13) is elongate and runs transversely from one edge of the plate (3), opening out into the said edge, by virtue of which the electrical cable, preassembled and pre-equipped, can be put in place in the device by being inserted into the opening transversely from the edge of the plat

Abstract: Hydraulic device for directional control of a vehicle using a single lever. The device includes a hydraulic manipulator (1) with four outlets, forward/reverse and right/left. A selection device (4) with four selectors (5) in a bridge is connected to the manipulator, and the outputs are connected to four motors for reverse-left, forward-left and reverse-right and forward-right control of the running components of the vehicle. A slide valve (7) with two positions, respectively one with direct connections and one with crossed connections, is inserted into the two feed lines of the motors (6 AVG, 6 AVD or respectively 6 ARG, 6 ARD). A control input (10) of the slide valve is connected to the FORWARD and REVERSE outputs of the manipulator, by virtue of which the control of the vehicle remains fully ergonomic, including for a rotation of the vehicle about a central vertical axis.

Abstract: Hydraulic device for directional control of a vehicle using a single lever, including: a hydraulic manipulator (1) with four outlets, forward-reverse and right-left; a selection device (4) with four selectors (5) in a bridge, which is connected to the manipulator and of which the outputs are connected to four directional drive controls, reverse-left, forward-left and reverse-right and forward-right for the running components of the vehicle; two slide valves (7) with two positions, respectively one with direct connections and one with crossed connections, which are inserted into the feed lines of the directional drive controls; first controls acting on a first end (8) of the slide valves being connected to the FORWARD or REVERSE outputs of the manipulator; and second controls acting on a second end (9) of the slide valves being connected to the RIGHT and LEFT outputs of the manipulator; by virtue of which the control of the vehicle remains fully ergonomic, including for a rotation of the vehicle on itself.

Abstract: A multiple hydraulic distributor device, having an antisaturation function wherein flow of hydraulic fluid is divided independently of load, which includes a hydraulic distributor device having a number of distributor devices assigned to controlling respective loads, which are stacked up face to face against each other as a stack and individually arranged in such a way that the stack has a common line passing through the stack for supplying working fluid under pressure originating from a source including a pump associated with a flow/pressure control device, a common return line for returning working fluid to a tank, and a common transmission line for transmitting control fluid at a pressure of highest load towards the control device for controlling the pump; a shut-off device arranged in the transmission line between a first group of distributors for which the transmission line is connected to the flow/pressure control device for controlling the source, and at least a second group of distributors for which t