Pressure-driven metered mixing dispensing pumps and methods
US9790935B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2014 |
| Grant date | Oct 17, 2017 |
| Priority date | — |
| Expiry date | Jun 22, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B53/143
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An example pressure-driven metered mixing dispensing pump includes a housing, a fluid inlet, a piston disposed in the housing at least partially defining first, second and third chambers, the first and second chambers each in fluid communication with the third chamber, the piston to, in response to first fluid entering the first chamber via the fluid inlet, move in a first direction to decrease the volume of the second chamber thereby ejecting second fluid from the second chamber into the third chamber, a spring to move the piston in a second direction to decrease the volume of the first chamber thereby ejecting at least some of the first fluid from the first chamber into the third chamber thereby mixing the at least some of the first fluid and the second fluid to form a mixture, and an outlet to discharge the mixture from the third chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.