One-piece ventable piston for a dispensing apparatus, a dispensing apparatus with same, and method of making same
US9469061B2 · kind B2 · utility
6Cited by
15References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 27, 2014 |
| Grant date | Oct 18, 2016 |
| Priority date | — |
| Expiry date | Dec 15, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D2205/04
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A piston has a one-piece body having a first portion and a second portion. The second portion is integrally formed with the first portion, is flexibly movable between a first position and a second position relative to the first portion, and is biased toward the first position. The first portion has an orifice, and the second portion has a seal member. When the second portion is disposed in the first position, the seal member is disposed in a sealed arrangement with the orifice, and when the second portion is disposed in the second position, the seal member is disposed in an unsealed arrangement with the orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.