| 摘要 |
A dispenser for flowable materials has an outer housing surrounding a readily deformable inner container holding the material to be dispensed. The housing is resiliently deformable under manually applied forces, and has an air inlet covered by the hand of the user, or controlled by a check-valve providing for inflow exclusively. Constriction or compression of the housing by hand increases the pressure of the air occupying the space between the housing and the inner container, compressing the inner container, and expelling some of the contents via an outlet. Release of gripping pressure permits the resiliency of the housing to restore its original configuration, and produces a suction causing inflow of air at the air inlet in a volume corresponding to the volume of the discharged contents of the inner container. A modification of the invention utilizes the air pressure to additionally produce one or more jets of air at the outlet to increase atomization. The inner container and the outer housing are both preferably tubular, and have a common seal at the end of the device opposite from the outlet.
|
