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Class Information
Number: 250/231.13
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Light valve (e.g., iris diaphragm) > Actuated by dynamic external physical quantity > Shaft angle transducers
Description: Subject matter wherein the angular position or speed or a rotatable shaft is the active external physical quantity sensed by one or more photocells and an output is generated which is indicative of those parameters.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7199353 |
Optical decoder systems and corresponding methods |
Apr. 3, 2007 |
| 7199356 |
Absolute angle detecting device |
Apr. 3, 2007 |
| 7199355 |
Methods and apparatuses for the exact determination of an angle of rotation |
Apr. 3, 2007 |
| 7199354 |
Detector array for optical encoders |
Apr. 3, 2007 |
| 7196319 |
Position-measuring device |
Mar. 27, 2007 |
| 7193204 |
Multi-track optical encoder employing beam divider |
Mar. 20, 2007 |
| 7193205 |
Optical encoder with burst generator for generating burst output signals |
Mar. 20, 2007 |
| 7186969 |
Optical configuration for imaging-type optical encoders |
Mar. 6, 2007 |
| 7187305 |
Encoder for a motor controller |
Mar. 6, 2007 |
| 7183535 |
Position-to-number electro-optical converter |
Feb. 27, 2007 |
| 7183536 |
Motion encoder |
Feb. 27, 2007 |
| 7183537 |
Rotary position sensor with offset beam generating element and elliptical detector array |
Feb. 27, 2007 |
| 7183538 |
Apparatus for adjusting a signal based on a position of a movable member |
Feb. 27, 2007 |
| 7182258 |
Enhanced reflective optical encoder |
Feb. 27, 2007 |
| 7176449 |
Power transfer device with contactless optical encoder and pitched reflective surface |
Feb. 13, 2007 |
| 7173236 |
Rotary electric component including a rotatably supporting case and operation panel using the same |
Feb. 6, 2007 |
| 7170047 |
Opto-electronic encoder with three-dimensional scales |
Jan. 30, 2007 |
| 7166833 |
Fiber optic remote reading encoder |
Jan. 23, 2007 |
| 7164120 |
Position measuring instrument |
Jan. 16, 2007 |
| 7164482 |
Position measuring system |
Jan. 16, 2007 |
| 7161139 |
Position-measuring system and method for operating a position-measuring system |
Jan. 9, 2007 |
| 7158223 |
Torque measuring apparatus for rotating body |
Jan. 2, 2007 |
| 7145131 |
Absolute encoder |
Dec. 5, 2006 |
| 7145130 |
Rotation detecting device and automobile with the same |
Dec. 5, 2006 |
| 7145129 |
Method for optimizing performance of optical encoders operating in a fluid |
Dec. 5, 2006 |
| 7145128 |
Light receiving device for optical encoder, and optical encoder, including first and second photodiodes arranged in perpendicular directions and irradiated through openings of a light shieldin |
Dec. 5, 2006 |
| 7145127 |
Optical encoding that utilizes total internal reflection |
Dec. 5, 2006 |
| 7145126 |
Optical position encoder device using incoherent light source |
Dec. 5, 2006 |
| 7141780 |
Position determination system for determining the position of one relatively moveable part relative to another relatively movable part |
Nov. 28, 2006 |
| 7138623 |
Power transfer device with contactless optical encoder and color reflective surface |
Nov. 21, 2006 |
| 7135673 |
Imaging rotation angle absolute encoder |
Nov. 14, 2006 |
| 7129475 |
Photoelectric encoder and method of manufacturing scales |
Oct. 31, 2006 |
| 7126107 |
Methods and apparatuses for sensing rotational position of a component in a printing device |
Oct. 24, 2006 |
| 7126108 |
Photodetector array arrangement for optical encoders |
Oct. 24, 2006 |
| 7122785 |
Rotation angle detection apparatus and resin rotary disk for the same |
Oct. 17, 2006 |
| 7112782 |
Optical position measuring system |
Sep. 26, 2006 |
| 7112781 |
Absolute encoder |
Sep. 26, 2006 |
| 7109614 |
Drive unit for determining a rotation position and/or rotation speed of a drive shaft |
Sep. 19, 2006 |
| 7109469 |
Composite operation type input device for carrying out pressing and rotation operations with common operation unit |
Sep. 19, 2006 |
| 7105803 |
Rotary optical encoder |
Sep. 12, 2006 |
| 7105802 |
Torque measuring device for rotating body incorporating one light emitting element at rotational axis |
Sep. 12, 2006 |
| 7105801 |
Actuator with interrupter-type limit switches |
Sep. 12, 2006 |
| 7102123 |
Reflective imaging encoder |
Sep. 5, 2006 |
| 7102122 |
Methods and means for using a photosensor as an encoder and a trigger |
Sep. 5, 2006 |
| 7095011 |
Photoelectric encoder for precise measurements |
Aug. 22, 2006 |
| 7091473 |
Measuring system for recording angular and linear absolute values |
Aug. 15, 2006 |
| 7091474 |
Rotation angle detecting device |
Aug. 15, 2006 |
| 7089672 |
Optical angle and torque sensor |
Aug. 15, 2006 |
| 7092108 |
Method for determining a position and position measurement device for carrying out the method |
Aug. 15, 2006 |
| 7087888 |
Electrical division circuit for an optical encoder |
Aug. 8, 2006 |
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