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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 |
| 6750446 |
Ultrasonic-welding apparatus, optical sensor and rotation sensor for the ultrasonic-welding apparatus |
Jun. 15, 2004 |
| 6737638 |
Gear-reduction device, particularly for measuring and transmitting rotary and swivel movements |
May. 18, 2004 |
| 6734417 |
Displacement measurement system and sheet feed system incorporating the same |
May. 11, 2004 |
| 6727493 |
Multiple resolution photodiode sensor array for an optical encoder |
Apr. 27, 2004 |
| 6724183 |
Method and apparatus for detecting bearing failure |
Apr. 20, 2004 |
| 6713756 |
Optical encoder and optical rotary encoder |
Mar. 30, 2004 |
| 6707029 |
Optical displacement measuring apparatus having light receiving arrays |
Mar. 16, 2004 |
| 6703602 |
Optical encoder with at least one lenticular sheet |
Mar. 9, 2004 |
| 6703601 |
Motion detection of an optical encoder by converging emitted light beams |
Mar. 9, 2004 |
| 6703600 |
Structural monitoring apparatus |
Mar. 9, 2004 |
| 6686585 |
Position encoder with scale calibration |
Feb. 3, 2004 |
| 6683545 |
Multiturn rotary encoder with detector devices on a shared side of a printed circuit board |
Jan. 27, 2004 |
| 6674066 |
Encoder |
Jan. 6, 2004 |
| 6660998 |
Timing device for positioning machine parts moving on a straight or circular path |
Dec. 9, 2003 |
| 6660996 |
System and method for examining relationship between intersecting encoder output signals |
Dec. 9, 2003 |
| 6653616 |
Device for processing output signals from a photo-diode |
Nov. 25, 2003 |
| 6653620 |
Method for evaluating a signal in an optoelectronic position measuring device |
Nov. 25, 2003 |
| 6653619 |
Optical motion encoder with a reflective member allowing the light source and sensor to be on the same side |
Nov. 25, 2003 |
| 6646731 |
Flow meter remote reading systems |
Nov. 11, 2003 |
| 6642506 |
Speckle-image-based optical position transducer having improved mounting and directional sensitivities |
Nov. 4, 2003 |
| 6642509 |
Linear scale measuring device and position detection method using the same |
Nov. 4, 2003 |
| 6642507 |
Beam rotation angle detecting apparatus, rotation detecting apparatus and beam rotation angle detecting method |
Nov. 4, 2003 |
| 6642508 |
System and method in an angle measuring system with an encoder attachment system for attaching an encoder to a motor shaft through the use of a spring generating a radial pressure |
Nov. 4, 2003 |
| 6639207 |
Optical rotary encoder and motor control apparatus |
Oct. 28, 2003 |
| 6639206 |
Rotary angle sensor for a rotary member |
Oct. 28, 2003 |
| 6635863 |
Optical encoder |
Oct. 21, 2003 |
| 6630659 |
Position transducer |
Oct. 7, 2003 |
| 6617571 |
Rotary encoder |
Sep. 9, 2003 |
| 6608300 |
Modular encoder rotation sensing |
Aug. 19, 2003 |
| 6600151 |
Optical encoder assembly with non-engageable encoder housing and receiver plate comprising a through hole and window |
Jul. 29, 2003 |
| 6600150 |
Encoder systems for printers and related methods |
Jul. 29, 2003 |
| 6590201 |
Optical encoder incorporating linear light controlling member |
Jul. 8, 2003 |
| 6580066 |
Measurement signal generating circuit for linear scale |
Jun. 17, 2003 |
| 6576889 |
Angle sensor |
Jun. 10, 2003 |
| 6575618 |
Information processing device |
Jun. 10, 2003 |
| 6563108 |
System for tracking angular and linear motion |
May. 13, 2003 |
| 6555808 |
Apparatus for detecting rotational angle |
Apr. 29, 2003 |
| 6552329 |
Method for a quantitative detection of a linear and rotary movement |
Apr. 22, 2003 |
| 6552330 |
Optoelectronic angle of rotation sensor |
Apr. 22, 2003 |
| 6545262 |
Position measuring system |
Apr. 8, 2003 |
| 6541760 |
Rotation detecting apparatus detecting rotation operation by light transmission to prevent invalid detection |
Apr. 1, 2003 |
| 6542088 |
Multiturn rotary encoder with multiple code carriers coupled by a reduction gear |
Apr. 1, 2003 |
| 6534762 |
Method and device for detecting position of a rotating control member |
Mar. 18, 2003 |
| 6528783 |
Position sensor and circuit for optical encoder |
Mar. 4, 2003 |
| 6528779 |
Optoelectronic module |
Mar. 4, 2003 |
| 6521885 |
Linear scale measuring device and position detection method using the same |
Feb. 18, 2003 |
| 6512222 |
Displacement measuring apparatus |
Jan. 28, 2003 |
| RE37969 |
Optical displacement sensor and torque sensor employing relatively movable slit patterns |
Jan. 28, 2003 |
| 6504146 |
Disk-mounting structure for optical encoder |
Jan. 7, 2003 |
| 6492976 |
Multiple-wheel input device |
Dec. 10, 2002 |
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