Metered dispensing cap for tubes
US4875603A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1989 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Jan 26, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D35/40
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a metered dispensing cap system for containers such as tubes and the like. The system has a base element which is attachable to the neck of a squeezable container and which has a sidewall portion and a top. The base element has an opening in the top for outflow of a material from a squeezeable container into a meter element. This base element may be removeably attachable, e.g. by being screwed on, or may be permanently attached, e.g. by being integrally molded with the container. A one way valve is located in the opening of the base element to permit the flow of material from a container through the opening while preventing backflow. The system also includes a meter element which acts like an inverted trap and which has a sidewall portion and a top with an opening in the top for dispensing of the material therefrom. The sidewall portion of the meter element is slightly larger than and has the same across section shape as the sidewall portion of the base element and this sidewall portion of the meter element is higher than and located about and encompasses the sidewall portion of the base element. Further, the meter element is vertically slideabl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.