Tamper evident discharge apparatus for flowable media
US5944222A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1997 |
| Grant date | Aug 31, 1999 |
| Priority date | — |
| Expiry date | Feb 25, 2017 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/0032
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A discharge apparatus for flowable media, comprising a basic body having a central, substantially cylindrical portion having upper and lower ends, the upper end having a spray nozzle and the lower end having actuating and gripping shoulders; a pump unit at least partly received by the basic body, the pump unit having: a piston rod holding a hollow needle projecting therefrom; a pump chamber connectable to a discharge opening via a discharge channel; and, a pump cylinder and a pump piston bounded by the pump chamber, the pump cylinder forming a medium reservoir and the pump piston being displaceably guided in the pump cylinder; an actuating sleeve; a ring-shaped fastening element having at least one breakable material bridge integral with the actuating sleeve and destroyable by an actuating force exerted in the pump stroke direction; the fastening element having an L-shaped cross-section having a bottom portion and a substantially cylindrical jacket portion, the actuating sleeve projecting centrally through and beyond the fastening element and the gripping shoulders; the housing having an outer projection surrounded by the fastening element; cooperating snap profiles provided at an …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.