Piston for a collapsible cartridge
US10968031B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2017 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Nov 10, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/7713
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A piston for a collapsible cartridge for dispensing a material, the piston includes a rigid portion and a flexible portion. The rigid portion has a first diameter, a first end and a second end. The first end is configured to be disposed in a material dispensing direction. The flexible portion has a second diameter less than the first diameter, a first end disposed in the material dispensing direction and a second end disposed in an opposite direction. The flexible portion is disposed on the first end of the rigid portion such that the second end of the flexible portion is disposed to face the first end of the rigid portion. The flexible portion is configured to radially expand and longitudinally compress upon a force applied to the first end of the flexible portion to compress the collapsible cartridge between the flexible portion and an interior surface of a support cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.