Differential force rotary sprinkler
US10799890B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Dec 24, 2018 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Jan 20, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B3/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A differential force rotary sprinkler comprises: a V-shaped rotary arm (1) having an arm body (11); a nozzle (2); a dust-resistant sealing cap (3) fixed and connected to the arm body (11); an upper oil seal (4) disposed at a lower end of an inner wall of the dust-resistant sealing cap (3); an upper bearing bush (5); a bearing housing (6); a lower bearing bush (7); a lower oil seal (8); a position-limiting screw nut (9); and a sealing O-ring (10). After the position-limiting screw nut (9) has been tightened, an axial gap of 0.5-1.5 mm is left between the position-limiting screw nut (9) and the lower bearing bush (7). An outer arm of the position-limiting screw nut (9) and the lower oil seal (8) realize a sealed smooth surface. The sprinkler realizes uniform spray of water and can be assembled and disassembled conveniently.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.