Brown & Sharpe Tesa Sa

Arthur Bovey

Adriano U Zanier

Lucien Borgognon

Michel Paudex

The micrometer includes a sleeve provided with an at least partially threaded inner surface and an at least partially threaded outer surface. The outer surface includes at least one deformable, tapered portion. A micrometric screw is engaged in the sleeve, and is able to be set in rotation with respect to the sleeve in such a way as to displace itself along the longitudinal measuring axis (x) of the device. A nut is engaged on the external threading of the sleeve and is able to be put in contact with the tapered portion in such a way as to deform it in order to adjust the play between the screw and the sleeve. The tapered portion is devoid of longitudinal slits; its deformability is provided by an external diameter variable along its periphery, preferably by an odd number of flat segments.

Device for longitudinal measurement

The electronic micrometer includes a casing defining at least an internal volume, in which are disposed a sleeve having an at least partially threaded inner surface. A screw is engaged in this sleeve and is able to be put in rotation with respect to the sleeve in such a way as to displace itself along the longitudinal measuring axis (x) of the device. There is a capacitive system of measurement for measuring the relative rotation of the screw with respect to the sleeve and for determining, starting with that measurement, the longitudinal position of the screw. The casing comprises two half-shells. At least one filiform joint allows the internal volume inside the casing to be sealed. Other sealing means are provided to prevent any infiltration of water or of dust into this internal volume. Accordingly, micrometer are protected.

Growing community of inventors

Lausanne, Switzerland

Arthur Bovey