Pump for filling bicycle tyres

摘要

The pump is assembled of a pump head (1), a first (2) and a second element (3), a piston and a piston rod (4). The pump head (1) comprises an air outlet (9) connected with a duct to an inlet and to be joined to the valve located at the tire. The piston rod (4) is joined to the head (1) by projections at the head (1) engaging with longitudinal slots at the rod (4) to be connected to the piston with threaded segments. The pump can be used after the two elements (2,3) are rotated in opposite directions and access to the air outlet (9) is provided.