Coating lance centralizer
US4309958A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 16, 1980 |
| Grant date | Jan 12, 1982 |
| Priority date | — |
| Expiry date | Jun 16, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S118/10
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An improved apparatus for maintaining the lance portion of a coating device accurately centered within the bore of a tubular conduit to be coated as the lance is moved axially through such bore. The tubular element of such coating lance is supported by a saddle which in turn is supported between two elongated skids which are respectively engageable with opposed top and bottom surfaces of the conduit bore. Radially projecting pins are respectively provided on each side of the saddle. Two pairs of expanding links are respectively pivotally mounted on each end of the saddle pins in an X configuration and one end of each link is pivotally connected to a pivot mounting bracket formed on one of the skids. The other ends of the expanding links are slidably engaged with the internal surfaces of the mounting brackets so that the expanding links may be moved from an essentially horizontal position, wherein the skids are collapsed adjacent to the lance supporting tubing, to a more upright position wherein the skids are radially expanded relative to the supporting tubing. Expansion and contraction of the links is respectively accomplished by actuating elements secured to the tubular portion of…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.