Latch, in particular for an automobile vehicle door

A latch, in particular for an automobile vehicle door, comprising:

• inner and outer devices for controlling the unlatching of the latch wherein the devices are part of a closed hydraulic circuit and each comprises at least one unlatching control pump;
• a device for locking the latch, the locking device comprising a first directional valve inserted in the circuit between said outer unlatching control pump and a means for unlatching the latch;
• a closed hydraulic circuit containing a liquid, said hydraulic circuit further comprising an expansion vessel and a check valve, which valve is associated with the vessel and is adapted to permit the return of said liquid to the vessel only at very low flows;
• priority actuating means in combination with the first directional valve, the priority actuating means operative in response to the position occupied by the latching means of the latch;
• a second directional valve having a neutral position;
• and,
• means associated with said second valve for returning said second valve elastically to said neutral position, said second directional valve being inserted between said outer device and the first directional valve and mounted in such manner as to be shifted by actuating means for said second directional valve when, and only when, said priority actuating means are in a state corresponding to the unlatched or incompletely latched state of the latch, and to then connect said outer device to a latching end of the first directional valve.