Screw water pump with inner housing and outer housing
US11905957B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2022 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Nov 28, 2042 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04C2240/30
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Provided is a water pump having improved efficiency by simplifying its structure, the water pump including: an outer housing having a shape of a container, and including an inlet part positioned at a lower end, and an outlet part positioned at a side of an upper end; an inner housing having a shape of a container, including a communication hole positioned at an upper end and communicating the inside and outside with each other, and inserted into the outer housing; a thrust key coupled to the inside of the outer housing; and a first screw and a second screw, inserted into the inner housing, having lower ends supported by the thrust key, and engaged with each other to be rotated together.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.