Dosage dispenser device
US4506810A · kind A · utility
43Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1982 |
| Grant date | Mar 26, 1985 |
| Priority date | — |
| Expiry date | Jul 13, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/1529
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A device for dispensing a viscous product comprises a cylindrical barrel having a piston sealingly slidable therewithin under the action of a reciprocating rack actuated by a manually-operable push-button. The piston includes a sealing skirt which is separate from the catch-engagement lips which allow unidirectional entrainment of the piston by the reciprocating rack, and it serves to seal the piston to the rack to prevent wastage of product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.