Sony Corporation

Hiroshi Maru

Yoshito Kato

Toshio Hashimoto

Hiroyuki Ohkubo

A length measuring device has a magnetic scale body including at least one origin signal magnetic section and a measurement signal magnetic section forming a magnetic grating, the magnetic scale body having a uniform frictional surface formed over the entire effective length of the scale body, and a detecting head body including an origin detecting head for detecting an origin signal and a measurement detecting head for detecting a measurement signal and provided with a scraper in elastic contact with the frictional surface of the magnetic scale body, the detecting head body moving relative to the magnetic scale of the body along the length of the latter.

Growing community of inventors

Oomiya, Japan

Hiroshi Maru