Vented nestable pouring spout
US4555048A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1984 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | May 16, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D47/128
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A vented, nestable-extendable pouring spout for use with a container having an opening therein includes an annular mounting portion adapted to be secured to an annular lip encompassing the opening of the container. A generally funnel shaped flexible body portion is secured at its larger circumferential edge to the mounting portion and at its smaller circumferential edge to a tubular neck portion located inwardly of the mounting portion. The body portion has an invertible fold portion adjacent the mounting portion to which is attached a plurality of circumferentially spaced ears. In the nested orientation of the spout, the ears extend downwardly out of the way of the nested neck and body portions. As the spout is extended, causing the invertible fold portion to invert, each ear rotates inwardly about its point of attachment until the ears extend inwardly perpendicular to the longitudinal axis of the spout. In this orientation, the ears define a central flow aperture for the outflow of liquid and a plurality of peripheral vent openings, one between each ear, for the inflow of air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.