G - Physics – 01 – B
Patent
G - Physics
01
B
33/184
G01B 5/20 (2006.01)
Patent
CA 1278678
ABSTRACT OF THE DISCLOSURE The measuring bar consists of an elongated rigid sectional shaft to the ends of which are secured two identical diametrally larger spherical bodies. Adjacent and inwardly of each body, there is provided a pair of stabilizer discs eccentrically connected to the shaft about a transverse axis. These stabilizer discs impart lateral stability to the measuring bar when both spherical bodies rest on a curved or flat surface. The spherical bodies are of precisely-known diameter d and the distance La between their centers is also precisely known. The method of measuring, for instance, the taper of a conical shaft includes the following steps: a) positioning the measuring bar on the shaft with its longitudinal axis co-planar with the shaft axis; b) measuring at a first spherical body the shortest distance Sa between a point of the shaft opposite the body and co-planar with the axes of the measuring bar and of the shaft and a tangent of the first body whereby the latter distance is measured along a line which is normal to the cone generatrix containing this point; c) repeating the measuring step b) at the second body to obtain the distance Sb; and d) computing the tapering angle .theta. from La, Sa and Sb by resolving the following equation: .theta. = sine -1 Image .
553246
Favvas Dimitrios
Lesperance Pierre
LandOfFree
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