Vented refill units and dispensers having vented refill units

摘要

Exemplary embodiments of vented refill units and dispensers having vented refill units are disclosed herein. An exemplary refill unit includes a non-collapsing inverted container. The container has a neck located at the bottom of the container. A pump is secured to the neck. The pump has a housing that has a cylindrical outside surface. In addition, the housing has an attachment mechanism for attaching the pump to a venting insert. The venting insert has a cylindrical inside surface and a cylindrical outside surface. At least a portion of the venting insert is located within the neck. An air passage is located between the pump housing and the cylindrical inside surface of the venting insert. One or more apertures are located through the venting insert. A one-way air inlet valve is located proximate the one or more apertures.

主权项

1. A refill unit for a soap, sanitizer or lotion comprising:
a non-collapsing inverted container; the non-collapsing inverted container having a neck located at the bottom of the container; a pump secured to the neck; the pump having a housing; the housing having a cylindrical outside surface; the housing having an attachment mechanism for attaching the pump to a venting insert; the venting insert having a cylindrical inside surface and a cylindrical outside surface; at least a portion of the venting insert is located within the neck; air passage is located between the pump housing and the cylindrical inside surface of the venting insert; the venting insert includes one or more apertures therethrough; a one-way air inlet valve is located proximate the one or more apertures; the one-way air inlet valve opens when the vacuum pressure in the container exceeds the cracking pressure of the one-way air inlet valve to allow air to vent the container.