Stackable lid
US3931890A · kind A · utility
43Cited by
8References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1974 |
| Grant date | Jan 13, 1976 |
| Priority date | — |
| Expiry date | Jun 27, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2543/00796
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A disposable plastic lid for a container includes a generally round closure wall and a depending peripheral skirt for engagement with the container. The closure wall includes an improved stacking facility by which a plurality of such container lids may be stacked one on top of the other in a manner which precludes the stacked lids from being jammed together. The stacking means also retards materially any tendency for the lids in the stack to slip sideways with respect to each other which provides a very stable stack without supplementary supports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.