Pump assembly with shield
US12121916B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2021 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Mar 29, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04B9/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a pump assembly having slidingly engaged upper and lower sleeves, and a pump having inlet and outlet ends and a pump chamber therebetween. Movement of the lower sleeve towards the upper sleeve causes the pump chamber to reduce in volume. The outlet end of the pump has a shoulder between a first diameter portion and an outlet nozzle extending downwardly from the shoulder and having a second diameter smaller than the first diameter portion. The lower end of the lower sleeve includes a shied extending from a lowermost rim upwards and inwards to terminate at an orifice that is larger than the second diameter but smaller than the first diameter portion. The shoulder supporting against a lip of the orifice and the outlet nozzle extending through the orifice to terminate at a dispersion location within the shield at a distance L from the orifice.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.