Gage for measuring fluted oil field tubular members
US4649651A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 23, 1985 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Aug 23, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B3/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a gage for measuring the nominal diameter of an elongated tubular member having a plurality of circumferentially spaced apart radially outwardly extending flutes. The gage includes a first gage part having a generally semi-circular segment with a flute engaging surface and a similar second gauge part including a generally semi-circular flute engaging surface. The first and second gage parts are joined together, preferably by a hinge, to form a generally circular ring adapted to fit about the tubular member. Each flute engaging surface includes a plurality of stepped arcuate flute engaging portions that are spaced at radii from the center of the ring corresponding to nominal diameters to be measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.