Bicycle pump has pressure gauge that can be coupled to valve, which is either in connection with cylinder or with outlet and which is in open position when coupled to gauge or in closed position when decoupled from gauge

摘要

The pump includes a plunger (14) that can be moved in a cylinder (11). A plunger rod (12) is fixed to the plunger. An outlet (13) is in connection with the cylinder and a valve (20) is either in connection with the cylinder or with the outlet. A pressure gauge (30) can be coupled to the valve, which is in an open position when coupled to the pressure gauge and which is in a closed position when decoupled from the gauge.