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E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
E02F3/92—Digging elements, e.g. suction heads
E02F3/9206—Digging devices using blowing effect only, like jets or propellers
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FR372777D1906-12-201906-12-20Procédé pour écarter les amas de matières se déposant au fond des cours d'eau au moyen d'eau sous pression
ExpiredFR372777A
(fr)
Procédé permettant de réaliser, au moyen de l'air comprimé, la continuité de massifs de maconnerie pleins ou évidés, établis sous une nappe d'eau
Appareil pour introduire sous forme de gouttes, des matières chimiques pulvérisées solubles dans l'eau, dans une chaudière pour empecher l'incrustation