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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 |
| 4445044 |
Angular position transducer having a bipolar analog output signal |
Apr. 24, 1984 |
| 4397569 |
System for correlating a signal sensor location with a recorder printout |
Aug. 9, 1983 |
| 4386270 |
Angular information transducer mounting |
May. 31, 1983 |
| 4379255 |
Controller with at least one switch actuatable within a predetermined range of motion, in combination with a set point selector |
Apr. 5, 1983 |
| 4369578 |
Encapsulated angle measuring apparatus |
Jan. 25, 1983 |
| 4365152 |
Encoder for machine control |
Dec. 21, 1982 |
| 4363026 |
Position encoder update mechanism and method |
Dec. 7, 1982 |
| 4360730 |
Encoder alignment method and apparatus |
Nov. 23, 1982 |
| 4358753 |
High resolution shaft position encoder |
Nov. 9, 1982 |
| 4356397 |
Optical valve position sensor system |
Oct. 26, 1982 |
| 4338517 |
Shaft rotation sensor |
Jul. 6, 1982 |
| 4326415 |
Speed indicating apparatus for vehicles |
Apr. 27, 1982 |
| 4324973 |
Energy beam drilling apparatus having optical fiber link position sensor |
Apr. 13, 1982 |
| 4320293 |
Angle-position transducer |
Mar. 16, 1982 |
| 4304630 |
Position indicator |
Dec. 8, 1981 |
| 4289962 |
Optoelectronic synchro generator |
Sep. 15, 1981 |
| 4273526 |
Automatic damper control |
Jun. 16, 1981 |
| 4257693 |
Cine camera |
Mar. 24, 1981 |
| 4250380 |
Rotation angle detector |
Feb. 10, 1981 |
| 4246478 |
Position detector with two timing disks rotating at different speeds |
Jan. 20, 1981 |
| 4230290 |
Airplane angle of attack and direction of flight indicator |
Oct. 28, 1980 |
| 4227079 |
Multipath fine positioning beam director |
Oct. 7, 1980 |
| 4224603 |
Device for locating the position of a movable component and especially a value-setting component in a franking machine |
Sep. 23, 1980 |
| 4207463 |
Rotation angle sensor |
Jun. 10, 1980 |
| 4190767 |
Optical encoder apparatus |
Feb. 26, 1980 |
| 4184072 |
Solar cell angular position transducer |
Jan. 15, 1980 |
| 4156190 |
Electronic bicycle odometer and speedometer |
May. 22, 1979 |
| 4147051 |
Densimeter |
Apr. 3, 1979 |
| 4137451 |
Detecting circuit for a photocell pattern sensing assembly |
Jan. 30, 1979 |
| 4132890 |
Self adjusting tachometer |
Jan. 2, 1979 |
| 4123653 |
Arrangement for detecting the angular position of a rotatable part |
Oct. 31, 1978 |
| 4109389 |
Shaft angle transducer |
Aug. 29, 1978 |
| 4103155 |
Positional sensor-operator system |
Jul. 25, 1978 |
| 4075478 |
Floating head encoder |
Feb. 21, 1978 |
| 4061995 |
Odograph and heading indicator therefor |
Dec. 6, 1977 |
| 4056722 |
Shaft position sensor |
Nov. 1, 1977 |
| 4031441 |
Optical encoder |
Jun. 21, 1977 |
| 4006472 |
Aircraft altitude alerting device |
Feb. 1, 1977 |
| 3999063 |
Optical measuring system with digital electrometer scaler |
Dec. 21, 1976 |
| 3959628 |
Electrical read-out apparatus |
May. 25, 1976 |
| 3954339 |
Angular sensor |
May. 4, 1976 |
| 3947682 |
Apparatus for measuring angular displacement |
Mar. 30, 1976 |
| 3940609 |
Angular position measuring apparatus |
Feb. 24, 1976 |
| 3935447 |
Angular motion detection apparatus |
Jan. 27, 1976 |
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