fitting vacuum slot 70 and out through a fitting adapter 50 which is connected to a second rubber tube 46 second rubber tube 46 is under a negative pressure or vacuum therefore when the bimorph 72 of the piezo electric element 66 is in a deactivated condition pressurized gas passes into the first rubber tube 44 into capillary tube 48 and then into deflection chamber 74 the pressurized gas then goes into the vacuum conduit 76 and out to the fitting vacuum slot 70 that is a part of the fitting adapter 50 that is connected to a second rubber tube 46 the bimorph 72 in a deactivated condition is shown in fig7 and 9 in this mode the pressure difference across the elongate flexible member is near zero and the normal force and accompanying friction force is low the deactivated condition allows the elongate flexible member 28 to move back and forth in the curved channel 68 of the base member 34 as shown in fig8 and 10 when the bimorph 72 is activated a vacuum is created since the pressurized air from the first rubber tube 44 is not allowed into the vacuum conduit 76 the vacuum from second rubber tube 46 into fitting adapter 50 of vacuum slot 70 creates a suction at a pair of grooves 64 thereby holding or latching the elongate flexible member 28 in the curved channel 68 of the base member 34.