Title: Fluid dispensing pump having axially deformable valve

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Abstract: In the illustrative embodiments of the invention disclosed, a non-aerosol pump includes a housing, a barrel within the housing forming a valve chamber, a pumping chamber within the barrel, a valve gland within the valve chamber for controlling intake and discharge flow to and from the pumping chamber, and a hand or finger-operated plunger for operating the pump. The valve gland has a circular seal lip on its axially outer surface for establishing a circular seal around the opening from the valve chamber to the pumping chamber. As pressure within the pumping chamber exceeds and falls below predetermined limits, the valve gland snaps open and closed, respectively, to provide a sharp on-off spray discharge. The check valve for controlling flow from the container to the pumping chamber may be formed integrally with the valve gland and of the same material or, alternatively, may comprise a ball check valve located within the gland.


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