Dosing pump for liquid dispensers,申请号US20000741497-传众专利搜索

Dosing pump for liquid dispensers

申请公布号：US6516976(B2)

申请号：US20000741497

申请日期：2000.12.19

申请公布日期：2003.02.11

申请人：

KIMBERLY-CLARK WORLDWIDE, INC.

发明人：LEWIS RICHARD P.;MAHAFFEY CLEARY E.

分类号：A47K5/12;B05B11/00;(IPC1-7):B67D5/40

主分类号：A47K5/12

摘要：A dispenser for dispensing metered amounts of a viscous liquid includes a liquid reservoir and a pump chamber having an opening in communication with the reservoir. A dispensing orifice is defined in the pump chamber. A pump mechanism is configured with the pump chamber and is movable from a rest to a pressurizing position upon actuation thereof to pressurize liquid within the pump chamber. A check valve mechanism is disposed in the opening. A restriction device is disposed in the dispensing orifice and maintains a closed configuration to prevent leakage of liquid from the dispensing orifice. The restriction device opens upon sufficient liquid pressure build-up within the pump chamber upon actuation of the pump mechanism. The restriction device also may vent the pump chamber upon release of the pump mechanism.