Coating powder conveying methods -, - coating powder conveying apparatus, an electrostatic powder spray coating device, which contains such a coating powder - conveying device. It is a powder thickening current pump (10) with at least one feed chamber (12, 14) is provided. A control signal for generating a negative pressure in the delivery chamber (12, 14) is at the earliest at the same time, such as, preferably by a predetermined delay time later, as a control signal for opening a powder inlet valve (q1, q2) of the delivery chamber (12, 14) is produced, so that the beginning of the construction of the negative pressure in the delivery chamber (12, 14) at the earliest simultaneously with the beginning of the opening of the powder valve (q1, q2) or the defined delay time later than the opening of the powder inlet valve (q1, q2) is carried out.
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