Patent ID: 6814263
Filing Date: 2004-11-09
Classification: B05B

Abstract:
Pump for flowable media, particularly a cosmetic pump, provided with a base, which can be mounted tightly on the opening of a container and, when mounted, has an underside facing the container and a top side facing away from the container, a through-hole in the base, which extends from the underside of the base through to its top side, a tube sleeve extending upwards from the top side of the base around the through-hole, an outer guide sleeve likewise extending upwards from the top side of the base, a top part guided on the guide sleeve that can be manually depressed against a compression spring, a compression chamber adjacent to the tube sleeve with an inlet valve and an outlet valve, an outlet channel provided downstream of the outlet valve of the compression chamber, a mounting element provided on the underside of the base for connecting the base to the container, a riser tube extending from the through-hole into the container for drawing in the flowable medium and a forced-ventilation element to the inside of the container that is active when the top part is depressed, characterised in that both the inlet valve (24, 43) and the outlet valve (25, 49) of the compression chamber (23, 44) are designed as integrally moulded lip seals that only allow the medium to pass in the direction of transport, where the medium is drawn into the compression chamber (23, 44) by the upward travel of the top part (2) induced by spring force (16) and forced out of the compression chamber (23, 44) when the top part (2) is depressed.