Non-aerosol dispenser having a manually energizable piston
US5143259A · kind A · utility
13Cited by
15References
18Claims
0Family size
Inventor
Key dates
| Filing date | May 2, 1990 |
| Grant date | Sep 1, 1992 |
| Priority date | — |
| Expiry date | May 2, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/75
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A non-aerosol dispenser comprises an inner cylinder defining a contents chamber. A discharge valve is disposed at one longitudinal end of the chamber. A piston is disposed in the chamber and carries a guide which includes a cutting edge. The guide is received in a manually rotatable outer cylinder which induces the piston to travel toward the discharge valve while forcing the cutting edge through the inner cylinder. The piston includes longitudinally spaced ejector and energizer members with compressed air sealed therebetween for storing and transmitting energy from the energizer member to the ejector member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.