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US 6,186,369 B1Granted
Pump
AssigneeInnocos Innovative Verpackungen fur Die Kosmetische Industrie GmbH
InventorKarl-Heinz Rosenthal
Life of this patent
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AssigneeInnocos Innovative Verpackungen fur Die Kosmetische Industrie GmbH
InventorKarl-Heinz Rosenthal
Estimating the term…
On order to simplify the design of a pump intended for use with flowable elements, especially a cosmetic pump provided with a base plate (1) which can be secured to a container (2) and presents, once mounted, a lower side (6) turned to the container and an upper side (7) turned in the opposite direction, with an inlet (14) for letting through the element stored in the container (2) and, around the inlet on the upper surface, a sleeve for receiving a pumping device with a cover-fitted piston (21), which is pushed by at least one compression spring against the base plate (1), while said piston cover has a lower side (21a) turned to the container (2), an upper side (21b) turned in the opposite direction and an outlet (23), while said lower side (21a) is provided with a sealing sleeve (22) mounted moveable in a substantially axial direction, it is suggested that the pumping device should be fitted with a valve spring (4) presenting a sealing bottom plate (20) laid on the inlet in the base plate and a sealing top plate (31) laid on a support emerging radially relative to the longitudinal axis (20, 50) of the pump, while both the bottom plate (30) and the top plate (31) are linked by at least one spring element.
A pump for dispensing flowable media comprising a base plate (1), means (11, 42) for securing the base plate (1) to a container, a base plate sleeve (17) projecting from said base plate (1) and surrounding an inlet (14) in said base plate (1), a piston (3, 49) carrying a sleeve (22, 53) disposed in relative telescopic sliding relationship to said base plate sleeve (17) and in part defining therewith a pump chamber (35, 54), an outlet (23, 51) for dispensing flowable media from said pump chamber (35, 54), first spring means (26) for returning said piston (3, 49) from a decompressed condition thereof, a valve mechanism (30-33) housed substantially within said pump chamber (35, 54), said valve mechanism (30-33) including first and second sealing plates (30, 31, respectively) disposed for selectively opening and closing flowable media communication with respect to said inlet (14) and said outlet (23, 51), and at least one further spring means (32 and/or 33) associated with said sealing plates (30, 31) for normally biasing the sealing plates (30, 31) to positions closing-off flowable media communication through the respective inlet (14) and outlet (23, 51).
Dependencies are inferred from the claim text.