Pump dispensing device
US5310092A · kind A · utility
17Cited by
5References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1992 |
| Grant date | May 10, 1994 |
| Priority date | — |
| Expiry date | Dec 18, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B11/028
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A dispensing device is described which is a pump for dispensing accurately metered amount of fluids in the form of a spray. The device has a piston sliding in a cylinder. A fluid inlet to the cylinder is normally closed off by a ball valve and, when open, communicates with an outlet passage leading to a swirl chamber and outlet nozzle. Cooperating first and second cam surfaces are provided on parts fixed to the cylinder and piston respectively so that relative rotational movement of the cam surfaces causes the piston to slide in the cylinder, the stroke being fixed by the profiles of the cam surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.