System for spraying fluidized powder circumferentially around a pipe joint
US4308819A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1980 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Aug 11, 2000 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05B14/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A system for spraying fluidized powder circumferentially around a pipe comprising a powder applicator ring engageable with a pipe and having a pair of powder dispensers mounted thereon, a powder fluidization chamber containing a quantity of powder therein, a hose for introducing a stream of air into the chamber to fluidize the powder therein, a powder recovery canister having a pair of axially opposed powder blowers mounted thereon which have their intakes in communication with the interior of the recovery canister, each powder blower having an outlet from which a stream of air is allowed to pass, a pair of tangential inlet pipes circumferentially spaced and connecting with the interior of the canister, a pair of powder control valves connected to the chamber and in communication with the fluidized powder therein, a rod for actuating the powder control valves wherein a quantity of fluidized powder is exhausted into an orifice in each powder control valve, a hose for introducing the fluidized powder from each powder control valve into the sides of each powder blower outlet, a conduit connecting each powder blower outlet with a portion of each powder dispenser for supplying a stream …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.