Internal girth coating apparatus
US4340010A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1981 |
| Grant date | Jul 20, 1982 |
| Priority date | — |
| Expiry date | Apr 13, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S118/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An internal pipe coating apparatus for coating the interior surfaces of uncoated weld joints in an otherwise internally coated pipeline comprising a frame movable longitudinally along the interior of the pipeline, the frame having a shaft at its forward end and disposed generally along the longitudinal center line of the pipeline, a coating assembly comprising a pair of horizontally spaced arms mounted for rotation on the shaft and extending radially outward on opposite sides thereof, a pair of spaced parallel links having their inner ends pivotally connected to the outer ends of the arms and having their outer ends pivotally connected to a pair of triangularly shaped mounting plates, each mounting plate being in the shape of an obtuse isosceles triangle having a single obtuse angle and a pair of smaller acute angles, each mounting plate being pivotally connected to its associated link at the apex of the obtuse angle, a wheel mounted on each mounting plate at the location of each acute angle thereof, a hollow powder applicator head mounted on each mounting plate and having a dispensing opening oriented in a direction away from the shaft and parallel to the longitudinal axis of the …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.