Patent ID: 7735608

Claim:
A progressive distributor comprising: a distributor housing having a housing inlet, a plurality of housing bores, and a plurality of outlets in communication with the housing bores, respectively; a plurality of control pistons disposed in the housing bores, respectively, each of the control pistons can be sequentially displaced in the respective housing bore of the distributor housing, wherein each of the control pistons has two annular grooves, and each of the control pistons can be pushed into two final positions in the respective housing bore by a lubricant that is supplied under pressure via the housing inlet, wherein a specific quantity of lubricant can be delivered by means of one of the outlets on an outer face of the distributor housing, and each of the outlets communicates with one of the annular grooves of the respective control piston, wherein each of the control pistons is controlled sequentially by the lubricant so that a succeeding one of the control pistons cannot be displaced by the lubricant until the control piston displacement of the preceding control piston has been fully completed, wherein said housing bores are connected to the housing inlet via a central bore, wherein for each control piston, a channel connects one of the annular grooves of the control piston to an end face of the respective housing bore of the following control piston, wherein for all but one of the control pistons, the annular groove and the end face lie on the same side, but for the one of the control pistons the annular groove and the end face lie on opposite sides; and a plurality of metering pistons, each of which is displaceable in a metering piston bore formed in the housing, wherein connection channels interconnect the end faces of the housing bores with end faces of the metering piston bores of the metering pistons, respectively, wherein each of the metering pistons can be reciprocated by the lubricant between two stops, at least one of the stops is axially displaceable, and a displacement resistance of each of the metering pistons assigned to the control pistons is smaller than a displacement resistance of the respective following control piston.