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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 |
| 6492637 |
Dimension measuring device |
Dec. 10, 2002 |
| 6486463 |
Computer input device with encoders having flexible shafts and conical rollers |
Nov. 26, 2002 |
| 6486802 |
Low power consumption encoder, control method therefor and coordinate input device using the same |
Nov. 26, 2002 |
| 6483105 |
Optically controlled actuator |
Nov. 19, 2002 |
| 6483104 |
Rotational angle sensor using a CCD line with enhanced measuring precision |
Nov. 19, 2002 |
| 6476375 |
Optical sensor for pointing device with conical disks and single photodetector |
Nov. 5, 2002 |
| 6476377 |
Structural monitoring system |
Nov. 5, 2002 |
| 6476380 |
Compact optical measuring module utilizing three dimensional construction |
Nov. 5, 2002 |
| 6462442 |
Encoder with a housing, which can be assembled |
Oct. 8, 2002 |
| 6452158 |
Apparatus for determining the position of a movable mechanical element and method of marking a mechanical element |
Sep. 17, 2002 |
| 6452159 |
Position measuring system |
Sep. 17, 2002 |
| 6437318 |
Encoder using polarized filters |
Aug. 20, 2002 |
| 6437323 |
Optoelectronic path-, angle- or rotation-measuring device |
Aug. 20, 2002 |
| 6414304 |
Method and apparatus for determining the position of a wheel mounted on a vehicle |
Jul. 2, 2002 |
| 6411376 |
Method and apparatus for measuring the direction and position of rotating bodies |
Jun. 25, 2002 |
| 6410911 |
Optical displacement detecting apparatus |
Jun. 25, 2002 |
| 6410909 |
Device for the determination of the degree of relative rotation between two parts |
Jun. 25, 2002 |
| 6410910 |
Angle measuring system |
Jun. 25, 2002 |
| 6407379 |
Information processor |
Jun. 18, 2002 |
| 6407377 |
Apparatus for reading-out a setting of number wheels |
Jun. 18, 2002 |
| 6407378 |
Optical encoder device using a plurality of light receiving and emitting means with the light emitting means having a lens for emitting light in substantially parallel beams |
Jun. 18, 2002 |
| 6399941 |
Inclination angle sensor |
Jun. 4, 2002 |
| 6399940 |
Optical rotary position encoder |
Jun. 4, 2002 |
| 6396052 |
High precision analog encoder system |
May. 28, 2002 |
| 6392224 |
Scanning unit for an optical position measuring device |
May. 21, 2002 |
| 6380536 |
Rotation angle detector for detecting a rotational position of a steering wheel of a vehicle |
Apr. 30, 2002 |
| 6362469 |
Rotation detector for multi-rotation body having detection window |
Mar. 26, 2002 |
| 6359409 |
Encoder |
Mar. 19, 2002 |
| 6355927 |
Interpolation methods and circuits for increasing the resolution of optical encoders |
Mar. 12, 2002 |
| 6350984 |
Optical encoder |
Feb. 26, 2002 |
| 6342697 |
Method and apparatus for detecting origin of measurement |
Jan. 29, 2002 |
| 6323786 |
Absolute-value encoder device |
Nov. 27, 2001 |
| 6320185 |
Image detection apparatus |
Nov. 20, 2001 |
| 6316765 |
Device for detecting the position of rotating objects |
Nov. 13, 2001 |
| 6313460 |
Optical encoder for detecting rotary and linear movements |
Nov. 6, 2001 |
| 6300620 |
Optical sensor for pointing device with conical disks and single photodetector |
Oct. 9, 2001 |
| 6291815 |
Device for measuring rotation angle of rotary element by unit angles grouped for five units |
Sep. 18, 2001 |
| 6289294 |
Method for determining rotational data using an encoder device |
Sep. 11, 2001 |
| 6285023 |
Apparatus for generating origin signal of optical linear scale |
Sep. 4, 2001 |
| 6285024 |
Combined torque and angular position sensor |
Sep. 4, 2001 |
| 6281490 |
Method and device for generating distinguishable signals and method of distinguishing signals of similar shape |
Aug. 28, 2001 |
| 6278107 |
Optical reader for a high-resolution optical coder |
Aug. 21, 2001 |
| 6275173 |
Rotary encoder producing two output signals |
Aug. 14, 2001 |
| 6274864 |
Mechanical delimitation of the tolerances of an optical transmission section |
Aug. 14, 2001 |
| 6271515 |
Column switch for vehicles includes a flexible cable |
Aug. 7, 2001 |
| 6271523 |
Optical sensor system and method for monitoring consumables |
Aug. 7, 2001 |
| 6271516 |
G.M. tube environment radioactivity meter having a sensitivity degradation monitoring device with a natural radioisotope and means for automatically correcting the measured radioactivity |
Aug. 7, 2001 |
| 6268601 |
Apparatus for determing the position of a rotating shaft |
Jul. 31, 2001 |
| 6255645 |
Method and apparatus for optically measuring drive train backlash |
Jul. 3, 2001 |
| 6255644 |
Optical rotary encoder |
Jul. 3, 2001 |
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