Dispenser for paste-like substances
US4749105A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1986 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Jul 23, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D83/763
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A dispenser for paste-like substances is disclosed having a piston which is slidably disposed in a dispenser housing. The piston moves as the dispenser is being emptied toward a dispensing opening while being restrained from movement in the opposite direction. A press button is connected with a rod that extends through the piston and is coupled nonpositively with the piston through the intermediary of a locking device permitting the rod to move freely in one direction, but to carry the piston in the opposite direction. A membrane seals the end of the housing opposite the discharge opening. The piston rod is designed as a piercing tool for piercing the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.