Dispensing closure structures
US4209114A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1977 |
| Grant date | Jun 24, 1980 |
| Priority date | — |
| Expiry date | Dec 22, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/32122
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
It is known to manufacture closure structures so that each of such structures has a cap part including two spaced, aligned bearings and a movable part extending between the bearings and including trunnions fitting within the bearings. At least one of the parts of such closure structures is formed of a material which is sufficiently resilient so that the trunnions may be snapped into the bearings during the assembly of the closure structure. Such a closure structure may be improved so as to reduce damage to one or both of the parts during the manufacture of such a closure structure by shaping the trunnions and the bearings so that they both have shapes of surfaces of revolution which decrease in diameter in accordance with the distance from the portion of the movable part fitting within and between the spaced bearings. The entrances employed should also decrease in width in a corresponding manner.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.