Fulcrum type can opener
US3954030A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1975 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Aug 26, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67B7/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A hand-held, one-piece tool of single stamping design is adapted to be fulcrumed on the chime or rim of a container having an end closure, especially a closure defined by a weakening line. Relative upward pivotal operating movement of a handle portion about a first fulcrum portion acting on an outside wall of the container concentrates initial opening by a cam end portion of the tool bearing on the closure adjacent to its weakening line, and further movement of the handle shifts its fulcrum to a second fulcrum portion of the tool acting on the closure rim whereby the cam end portion bears progressively on the closure and away from its rim to rupture the weakening line and easily deflect the closure relatively inwardly of the container.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.