| Patent Number |
Title Of Patent |
Date Issued |
| 5087879 |
Construction for adjustably mounting sensor portion of magnetic rotation sensor and method of ad |
February 11, 1992 |
| A magnetic rotation sensor is disclosed, in which by raising the precision of the size between a first hole for positioning a magnetic rotation drum and second holes for positioning pin guides and at the same time by keeping the outer diameter of the pin guides at a high precision, the g |
| 5081756 |
Methods for assembling and adjusting a magnetic encoder device |
January 21, 1992 |
| Methods are provided for assembling a magnetic encoder wherein fluctuation of a magnetic gap arising from a change in temperature is minimized. The magnetic encoder comprises a magnetic scale having thereon a magnetic pattern which can be detected by a magnetic sensor, a sensor retainer |
| 4959574 |
Precision Gap Magnetic Encode Device |
September 25, 1990 |
| A magnetic rotary encoder device wherein fluctuation of a magnetic gap arising from a change in temperature is minimized, a printed circuit board on which an electric circuit electrically connected to a magnetic sensor is carried can be assembled readily, and a magnetic gap can be adjust |
| 4894533 |
Optical rotary encoder |
January 16, 1990 |
| An optical rotary encoder eliminates the necessity of relatively positioning a code plate and a click mechanism therefor so that it can be assembled with ease. The code plate is mounted for rotation relative to a stationary plate member, and the click mechanism including a ball and a |
| 4845456 |
Magnetic sensor |
July 4, 1989 |
| In a magnetic sensor, a first series-connected magnetic resistance element circuit is connected parallel to a second series-connected magnetic resistance element circuit, which finally forms a bridge circuit. The magnetic resistance elements are subdivided into two or three subdivided |
| 4806751 |
Code wheel for a reflective type optical rotary encoder |
February 21, 1989 |
| A code wheel for use with a reflective type optical rotary encoder which can be produced easily and optically read efficiently. The code wheel includes a non-reflective plate, and a reflective plate having a suitable number of notches formed along a periphery thereof and mounted in an |
| 4780610 |
Optical rotary encoder having superposed metal plate and shield plate |
October 25, 1988 |
| A manually-operated optical rotary encoder is provided with light receiving and emitting elements, the optical encoder generating a plurality of pulse signals. The rotary encoder comprises a reflecting plate and a non-reflecting plate which are superposed. The rotary encoder comprises a |
| 4727356 |
Optical rotary encoder |
February 23, 1988 |
| An optical rotary encoder is formed by a control pulse generator portion and a selector switch portion which are of the unitary construction. The control pulse generator portion is formed by a code plate having a plurality of alternately formed reflecting and non-reflecting areas, a |
| 4707062 |
Star-shaped coupler |
November 17, 1987 |
| A star-shaped coupler for distributing the light signal emitted by any one of input-output devices among the other devices is disposed among these devices. The coupler comprises a plurality of single-core optical fibers for branching purposes. Each one end of those branching fibers whose |
| 4661697 |
Optically reflecting code plate |
April 28, 1987 |
| Herein disclosed is an optically reflecting code plate having a number of reflective and unreflective portions formed alternately on the surface of its substrate. This substrate is made of aluminum of high purity, for example, and has its surface anodized with a colorless, transparent an |
| 4644156 |
Code wheel for reflective optical rotary encoders |
February 17, 1987 |
| A code wheel for use in a reflective optical rotary encoder includes a code wheel body formed of a light-reflective material, and a photosensitive layer directly coated on a flat surface of the code wheel body and exposed to light to produce angularly spaced non-reflecting surfaces, ther |
