Bellows neck squeeze fluid dispenser
US4216882A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1978 |
| Grant date | Aug 12, 1980 |
| Priority date | — |
| Expiry date | Sep 8, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/1035
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A manually actuatable fluid dispenser comprises a plastic bottle container which includes an upstanding bottle neck portion having a flexible bellows formed integrally on one side thereof operable by a reciprocal trigger member which engages the bellows through a trigger spring for exerting a sustained but limited force on the bellows, and reaction force on the trigger member, over extensive trigger actuation travel and speed. The upper end of the cylindrical neck of the container is closed by a dispenser body which includes a fluid passage having a check valve disposed therein for controlling the flow of fluid in the fluid passage. A fluid tube disposed in the bottle neck includes a seal for fluid isolation of the bottle neck from the bottle, and a check valve for allowing flow of fluid from the bottle into the bottle neck.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.