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Class Information
Number: 250/231.11
Name: Radiant energy > Photocells; circuits and apparatus > Optical or pre-photocell system > Light valve (e.g., iris diaphragm) > Actuated by dynamic external physical quantity > Actuated by gauge element deflection
Description: Subject matter wherein displacement of a gauge component, e.g., needle, by a force, e.g., gravity or an electromotive force is the active external physical quantity sensed.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7263870 |
Gauge calibration method |
Sep. 4, 2007 |
| 7232989 |
Transverse optical accelerator and generalized optical vortices |
Jun. 19, 2007 |
| 7109473 |
Transverse optical accelerator and generalized optical vortices |
Sep. 19, 2006 |
| 6867411 |
Optically rebalanced accelerometer |
Mar. 15, 2005 |
| 6741184 |
Pointer position detection using light emitting diodes |
May. 25, 2004 |
| 6495820 |
Sensor apparatus and method for sensing angular rotation of an object using light reflected off a rotor and bifurcation compensation |
Dec. 17, 2002 |
| 6157311 |
Portable electro-magnetic radiation sensor warning device |
Dec. 5, 2000 |
| 6087959 |
Optically coupled gas meter |
Jul. 11, 2000 |
| 5698847 |
Optical-modulation-type sensor and process instrumentation apparatus employing the same |
Dec. 16, 1997 |
| 5532479 |
Temperature, pressure, vibration or humidity sensor based on reflected light from a bimetallic, plastic or dehumidifying material |
Jul. 2, 1996 |
| 5528936 |
Optoelectronic spatial acceleration sensor |
Jun. 25, 1996 |
| 5428446 |
Measurement instrument with interferometer and method |
Jun. 27, 1995 |
| 5426297 |
Multiplexed Bragg grating sensors |
Jun. 20, 1995 |
| 5311014 |
Optical transducer for measuring pressure |
May. 10, 1994 |
| 5303921 |
Jammed shuffle detector |
Apr. 19, 1994 |
| 4927226 |
Multiplexer for high power CW lasers |
May. 22, 1990 |
| 4777360 |
Umbra/penumbra detector |
Oct. 11, 1988 |
| 4697077 |
Vane encoder assembly for adjusting an optical encoder in a data storage device |
Sep. 29, 1987 |
| 4636637 |
Method and apparatus for detecting motion through a transparent enclosure, with spurious information detecting and compensating means |
Jan. 13, 1987 |
| 4634859 |
Optical encoder with two photosensors |
Jan. 6, 1987 |
| 4631539 |
Digital pointer position detector |
Dec. 23, 1986 |
| 4626682 |
Angle measuring device |
Dec. 2, 1986 |
| 4609817 |
Optical shaft position sensor |
Sep. 2, 1986 |
| 4571995 |
Digital readout indicator of oxygen usage, pressure and flow |
Feb. 25, 1986 |
| 4550316 |
Stylus mouse |
Oct. 29, 1985 |
| 4417238 |
Alarm modification for meteorological instrument |
Nov. 22, 1983 |
| 4331867 |
Photoconductive instrument |
May. 25, 1982 |
| 4300548 |
System for detecting position of gauge pointer |
Nov. 17, 1981 |
| 4286151 |
Device for guiding the displacement of a vehicle and in particular an agricultural machine |
Aug. 25, 1981 |
| 4275393 |
Method and apparatus for sensing pressure |
Jun. 23, 1981 |
| 4255655 |
Temperature sensing switch with an optical sensor |
Mar. 10, 1981 |
| 4214155 |
System for detecting position of gauge pointer |
Jul. 22, 1980 |
| 4107661 |
Electrooptic meter pointer position detector |
Aug. 15, 1978 |
| 4087684 |
Fiber optics proportional control system |
May. 2, 1978 |
| 3938890 |
Torque transducer utilizing differential optical sensing |
Feb. 17, 1976 |
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