Air spray device
US6398135B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Feb 23, 2001 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Feb 23, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B7/2405
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An air spray device includes a barrel with a passage therein, a valve body disposed in the passage and actuated to move to permit fluid communication between an inlet and an outlet of the passage, spray tube with a first tube portion connected to the outlet, and a second tube portion telescopically fitted in the first tube portion, and a nozzle portion which is disposed outwardly of the second tube portion to generate a compressed air stream for removing dust from an object. Retaining members are disposed in the spray tube for retaining the spray tube in one of stretched and retracted positions. By the telescopic spray tube, the dust to be removed will not fly over the user, and the air spray device is convenient to store.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.