Pumping apparatus for dispensing a flowable product
US11913443B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2019 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Mar 28, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B43/086
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pumping apparatus 1 for dispensing a flowable product comprises first and second peristaltic pumps 12, 14. The first peristaltic pump 12 comprises a first rotor 18 having at least one pressing member 20, a first cylindrical stator 19 in which the first rotor 18 is rotatable and first flexible tubing 30 extending circumferentially around the first stator 19 against a first inner wall 19a. The second peristaltic pump 14 comprises a second rotor 42 having at least one pressing member 46, a second cylindrical stator 44 in which the second rotor 42 is rotatable and second flexible tubing 54 extending circumferentially around the second stator 44 against a second inner wall 44a. The first and second inner walls 19a, 44a each have a first and second radius r1, r2 respectively with the first radius r1 being greater than the second radius r2, and at least one of the stators 19, 44 is movable relative to the other stator 19, 44.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.