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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 |
| 4774463 |
Bearing associated with means for determining rotational speed |
Sep. 27, 1988 |
| 4772872 |
Alignment system for encoders |
Sep. 20, 1988 |
| 4769539 |
Electro-optical roll angle detector |
Sep. 6, 1988 |
| 4769537 |
Analog position-indicating optical encoder |
Sep. 6, 1988 |
| 4757196 |
Optical encoder and method for producing same |
Jul. 12, 1988 |
| 4751383 |
Method and apparatus for detection of position with correction of errors caused by errors in scale pitch |
Jun. 14, 1988 |
| 4746792 |
Optical transducer element and displacement meter comprising such an element |
May. 24, 1988 |
| 4746791 |
Fiber optic sensor with an optical modulator having a permanent magnet for the detection of the movement or position of a magnetic component |
May. 24, 1988 |
| 4740688 |
Optical transducers with wavelength coding |
Apr. 26, 1988 |
| 4740691 |
Optical rotary encoder and method of assembling the same |
Apr. 26, 1988 |
| 4728788 |
Position encoder apparatus |
Mar. 1, 1988 |
| 4727356 |
Optical rotary encoder |
Feb. 23, 1988 |
| 4719800 |
Accelerometer |
Jan. 19, 1988 |
| 4718879 |
Device for fitting and adjusting an encoder |
Jan. 12, 1988 |
| 4714888 |
Apparatus for observing the passage of a pig in a pipeline |
Dec. 22, 1987 |
| 4712000 |
Rotary encoder with source-adjacent light sampling and control |
Dec. 8, 1987 |
| 4709580 |
Retroflective attitude determining system |
Dec. 1, 1987 |
| 4707683 |
Increasing precision of encoder output |
Nov. 17, 1987 |
| 4698616 |
Optoelectronic rotational position sensor |
Oct. 6, 1987 |
| 4695164 |
Position detector and mount therefor for a centrifugal analyzer |
Sep. 22, 1987 |
| 4692613 |
Angle sensor |
Sep. 8, 1987 |
| 4691192 |
Method and apparatus for measuring angular displacement |
Sep. 1, 1987 |
| 4688934 |
Rotating polarizer angle sensing system |
Aug. 25, 1987 |
| 4684857 |
Optical excitation electromagnetic motor |
Aug. 4, 1987 |
| 4678907 |
Optical scanner and sensor for monitoring power consumption |
Jul. 7, 1987 |
| 4679029 |
Optoelectronic rotational position sensor |
Jul. 7, 1987 |
| 4677291 |
Analysis of rotational eccentricity |
Jun. 30, 1987 |
| 4673809 |
Optoelectronic scanning arrangement wherein optical reflective markings form curvilinear arcs |
Jun. 16, 1987 |
| 4673808 |
Disc for rotary encoder and method for producing same |
Jun. 16, 1987 |
| 4672201 |
Phase controlled incremental distance measuring system |
Jun. 9, 1987 |
| 4654523 |
Light-reflector type encoding method and the encoder |
Mar. 31, 1987 |
| 4652747 |
Shaft encoder having a concave reflective element with two regions of different reflectivity for light within two different wavelength bands |
Mar. 24, 1987 |
| 4650995 |
Reflection type optical rotary encoder |
Mar. 17, 1987 |
| 4631539 |
Digital pointer position detector |
Dec. 23, 1986 |
| 4620092 |
Elevation angle measuring device with apparatus for disabling the device when its inclination angle is offset from a predetermined inclination angle |
Oct. 28, 1986 |
| 4600834 |
Precision zero-home locator |
Jul. 15, 1986 |
| 4587485 |
Evaluation arrangement for a digital incremental transmitter |
May. 6, 1986 |
| 4587513 |
Noncontact shaft angle detector |
May. 6, 1986 |
| 4584471 |
Active translation sensor |
Apr. 22, 1986 |
| 4572030 |
Automatic transmission control system for vehicle |
Feb. 25, 1986 |
| 4569298 |
Signal arrangement in a sewing machine |
Feb. 11, 1986 |
| 4512184 |
Mounting arrangement for angle measuring device |
Apr. 23, 1985 |
| 4511798 |
Meter encoding register with tapered aperture in baffle insert |
Apr. 16, 1985 |
| 4500780 |
Apparatus and method for aligning postage meter components with an optical sensor |
Feb. 19, 1985 |
| 4500779 |
Meter encoding register having improved zeroing mechanism |
Feb. 19, 1985 |
| 4500870 |
Method and components for remote reading of utility meters |
Feb. 19, 1985 |
| 4493997 |
Fiber optic sensor for shaft state |
Jan. 15, 1985 |
| 4492861 |
Arrangement for detecting the position of an index mark relative to a graduation |
Jan. 8, 1985 |
| 4489384 |
Electro-optical sensor for watt-hour meter |
Dec. 18, 1984 |
| 4488051 |
Apparatus for sensing linear and rotational position between a screw element and a threaded member |
Dec. 11, 1984 |
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