Hand pump for car seat adjustment uses actuator integrally extended from nonreturn valve seal to free return line to inbuilt fluid reservoir taking seat load off actuator movement.

摘要

The swivel axis of the pump lever (4) is fixed in relation to the housing (1) and the actuator (12) is integrated with the seal (20) of the unsealable nonreturn valve (11). The actuator comprises a seal (2) which protrudes sealably from the housing on the side opposite the actuator connection and a return line leads from the actuator position to an hydraulic fluid reservoir integral to the housing (1).