Water spraying nozzle
US4909443A · kind A · utility
Inventor
Key dates
| Filing date | Feb 16, 1989 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Feb 16, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B9/01
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A water spraying nozzle has a horizontal water spraying portion and a handle portion provided on a rear downward portion of the water spraying portion and inclined obliquely rearward. The water spraying portion has at its front portion a water spraying head portion and at its rear portion a cylinder base portion connected to the water spraying head portion. The water spraying head portion includes an outer cylinder rotatably connected at its rear end to the cylinder base portion, an intermediate cylinder disposed within the outer cylinder, and an inner cylinder disposed within the intermediate cylinder in such a manner as to be longitudinally slidable in response to the rotation of the outer cylinder. The outer cylinder defines at its front end an opening on which is mounted a porous plate. The inner cylinder has at a front portion thereof a valve portion for opening and closing a water spraying opening provided in the intermediate cylinder and also a first through-hole communicating the inside and the outside thereof. A rear portion of the inner cylinder is connected to a first water conduit. The first through-hole allows the inside of the inner cylinder to communicate with the wa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.