Domed cup lids especially for use with frozen carbonated beverages
US6357619B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 18, 2000 |
| Grant date | Mar 19, 2002 |
| Priority date | — |
| Expiry date | Jul 18, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00814
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Domed lids for beverage cups include an arcuately convex lower side wall section, and an arcuately convex upper side wall section protruding upwardly from the lower side wall section. Most preferably, each of these upper and lower side wall section is in the form of a respective spherical surface, with the upper side wall section having a lesser radius of curvature as compared to the radius of curvature of the lower side wall section. In particularly preferred forms, cup lids are provided having an arcuately convex lower side wall section establishing a circular base skirt adapted to being attached to an upper lip of a cup; and an arcuately convex upper side wall section. The upper side wall section is joined at a lower edge region thereof to the lower side wall section by means of an annular concavity, and protrudes coaxially upwardly from the lower side wall section to an annular apical edge region. The upper side wall section includes a reentrant well recessed below the apical edge region and defines an opening in a terminal surface thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.