FIELD: mechanisms of indicating end of filter module serviced life; applicable in household conditions for purification of potable water with filters of jar type. SUBSTANCE: according to the first version, body of mechanism is located in upper part of filter holder. Mechanism for turning of indicating member has drive, two gear wheels, one of which is made with indicating member and means for control of gear wheel rotation with indicating member. In this case, the latter is combined with additionally located indicator of fluid level and sensitive member is made in the form of spring connected via lever to drive of means for control of gear wheel rotation with indicating member. According to the second version, body accommodates membrane, indicating member and mechanism for turning of indicating member. Membrane is located on one of sides of vessel for fluid to be purified and connected via lever with drive of control means of gear wheel rotation with indicating member. EFFECT: increased accuracy of determination of end of service life of filter, simplified design of indicating mechanism, improved convenience of use. 6 cl, 3 dwg
