A method for manufacturing self compacting and other struc­tural lightweight aggregate concrete in the density interval of 800 - 1800 kg /M<3> by, in a first step, mortar is mixed using Port­land cement and/or another type of cement, water, admixtures, natural rock-type aggregates and filler in the density interval above 2 000 kg/m<3>, and, in a second step, adding lightweight aggregates. Rock-typ...

An injector-pump device (10) is described for delivering liquid fuel to a combustion chamber of an internal combustion engine, comprising a body (12) in which an axial cavity (16) for accommodating an injecting reciprocating plunger (18) is defined. The plunger (18) includes a metering section (40), a pumping and injecting section (42), and a closing section (44) which are fixedly joined to one an...

Swivel clip comprising a clip (2) and a closed ring with round shape (1). The ring (1) has coils and it can provide an internal sheath (4) of thermoplastic lubricating material. The clip (2) is made up of a back part (5) of plastic or brass to which the ring (1) is bound, and of a front part (6) having various shapes.