Cup lid having improved drink-through opening
US6089397A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 9, 1999 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Apr 9, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00555
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A disposable cup lid is substantially circular, and has a downwardly facing cup rim engaging recess extending from 300.degree. to 360.degree. around the periphery. The recess is defined at its outer side by a downwardly depending apron, at its inner side by a downwardly directed recess sidewall, and at its top by a top wall between the apron and the recess sidewall. The apron extends 360.degree. around the periphery. An arcuate portion of the top surface extends radially outwardly to the apron, and has a radially directed axis of symmetry. A depressed "U"-shaped hinge is formed in the arcuate portion, and is oriented so as to be perpendicular to the axis of symmetry. A fault line is stamped into the the arcuate portion, in a location opposed to the "U"-shaped hinge, and is spaced radially inwardly from the apron by a distance which is at least equal to the width of the top wall of the cup rim engaging recess. The fault line defines an outer extremity of a tear-back flap which, when torn back, will fold backwardly at the "U"-shaped hinge so as to define a drink-through opening. An upwardly extending lifting stub is formed in the arcuate portion of the top surface, and is such that i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.