Pump dispensers
AssigneeRieke Packaging Systems Limited
InventorSimon Christopher Knight
Life of this patent
Estimating the term…
Abstract
A pump dispenser has a deformable pump chamber constituted by first and second part-chambers each having a respective resiliently deformable faceted chamber wall and a connecting conduit communicating between them. They may be moulded in one piece and require no separate restoring spring. The first and second part-chambers may be disposed in line between a pump body providing an inlet valve from a container and a movable actuator cap providing a valved outlet.
Claims22
A pump dispenser comprising a pump plunger reciprocable in a pumping stroke relative to a pump body, one of the plunger and an outside component body having an open mouth that surrounds and moves onto the other of the plunger and an inside component body in the pumping stroke;
- the dispenser further comprising a locking mechanism to prevent actuation of the pump plunger, the locking mechanism comprising selectively engageable interlock formations on an outer facing of the inside component body and on an inner facing of the outside component body.
A pump dispenser comprising a product container and a pump mounted on a neck of the container by a closure component to dispense product therefrom, the pump having an inlet, an inlet valve, a pump chamber, an outlet and a vent path for air to enter the container through the pump to compensate for dispensed product, wherein:
- the vent path enters the dispenser between the container neck and the closure component;
- the pump comprises a valve unit at the inlet, and the valve unit comprises a layer portion lying in proximity to the closure component adjacent the inlet but also having a region spaced from the closure component by a clearance, and
- the vent path enters the clearance between the valve unit layer portion and the closure component, and runs to the inlet opening behind the valve unit.
A reciprocating pump made completely from non-metallic and non-elastomeric components and selectively attachable to a fluid-carrying container, the pump comprising:
- a pump body at least partially enclosing a deformable pump chamber assembly having a lower member connected to and positioned at one end of a rigid connecting tube and an upper member is connected to and positioned at an opposite end of the rigid connecting tube;
- an actuator cap enclosing the upper member, said actuator cap including an outlet fluidically connected to the deformable pump chamber assembly;
- wherein the lower member is enclosed by and fluidically connected to an inlet;
- and wherein each of the upper and the lower members include resilient, flexible walls, said flexible walls spaced apart by the rigid connecting tube along an actuation axis.
Dependencies are inferred from the claim text.