Cartridge-type dispenser
US4373646A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1981 |
| Grant date | Feb 15, 1983 |
| Priority date | — |
| Expiry date | May 14, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C17/00576
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A disposable container comprising a filled, temporarily sealed cartridge for use in a caulking gun-like apparatus for repeated discharge of incremental amounts of the contents thereof of mayonnaise-like consistency. The cartridge includes a generally cylindrical tubular body having an inwardly rolled rim at one end thereof with a generally circular disc disposed within the body and adhesively sealed in abutment with the rim. A plurality of mutually intersecting slits through the disc form a resilient, pressure-responsive valve and orifice in the center portion of the disc. A plug top closure is at least partially disposed in the open opposite end of the tubular body and is provided with a cylindrical sidewall sized to be closely received within the tubular body, at least one circumferential rib on the cylindrical sidewall for tightly and slidingly engaging the tubular body, and a radially outwardly extending closure flange for yieldably abuttingly engaging the annular end face of the tubular body. Alternate forms of generally circular discs as well as a method of assembling such a cartridge are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.