Apparatus and method for measuring curvature of tubes

Details Apparatus and method for measuring curvature of tubes Apparatus and method for measuring curvature of tubes

2007-03-26

2011-12-20

Bennett, G. Bradley (Department: 2841)

Geometrical instruments

Indicator of direction of force traversing natural media

Process

C033S365000, C033S533000

Reexamination Certificate

active

08079154

ABSTRACT:
An apparatus for measuring an angle of inclination of a tangent to a centerline curve of a tube includes a shuttle and a clinometer rotatably fixed to the shuttle. The shuttle comprises a pair of circular end plates and a shaft that joins the end plates. A carrier is attached to the shaft and the clinometer is fixed to the carrier. The shaft is rotatable with respect to the end plates, or the carrier is rotatable with respect to the shaft. The method of determining curvature of a tube having a centerline curve comprises measuring angles of inclination of the tangent to the centerline curve at a plurality of axial locations along the tube.

REFERENCES:
patent: 870098 (1907-11-01), Hartshorn
patent: 2241401 (1941-05-01), Haskel
patent: 4222173 (1980-09-01), Hall
patent: 4916824 (1990-04-01), Shimazutsu et al.
patent: 5231766 (1993-08-01), Pavlak
patent: 5647139 (1997-07-01), Richardson
patent: 7614662 (2009-11-01), Spanger
patent: 2010/0093246 (2010-04-01), Honda et al.

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