Mounting cup and valve assembly for pressurized canister
US5957342A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1998 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Sep 9, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/38
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A valve assembly and mounting cup combination which comprises a mounting cup having an exterior, outwardly facing surface and an interior, inwardly facing surface, and a perimeter curl for attaching the mounting cup to a desired rim of a container. The mounting cup includes a pedestal portion with a conically-shaped top surface having a centrally located aperture formed therein and a gasket is disposed within the pedestal portion between an undersurface of the pedestal portion and a valve assembly. The valve assembly comprises a valve body, a valve stem with a base, and a spring. The assembly is disposed in and retained by the pedestal portion, via a conventional crimping process, with a product outlet carried by the valve stem and protruding through the aperture in the gasket and the central aperture. The spring biases the valve base against the gasket to form a seal therebetween. The conical shape of the top wall of the pedestal portion provides an enhanced clearance between and undersurface of the gasket and an adjacent surface of the base. This enhanced clearance allows the radial orifices, carried by the valve stem, to be located therebetween and have relatively large diameter…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.