 |
|
 |
| |
 |
|
Class Information
Number: 340/870.29
Name: Communications: electrical > Continuously variable indicating (e.g., telemetering) > Via radiant energy beam (via particular energy) > Photoelectric cell pickup
Description: Subject matter in which the radiant energy beam is sensed by a photoelectric cell.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7330662 |
System and method for remote optical digital networking of computing devices |
Feb. 12, 2008 |
| 7302366 |
Measuring instrument |
Nov. 27, 2007 |
| 7135986 |
Meter register having an encoder for measuring material flow and an algorithm to selectively block signal transmission |
Nov. 14, 2006 |
| 7042368 |
Automated meter reader device having optical sensor with automatic gain control |
May. 9, 2006 |
| 6828919 |
Exciter assembly telemetry |
Dec. 7, 2004 |
| 6617978 |
Electricity meter |
Sep. 9, 2003 |
| 6512458 |
Method and apparatus for detecting failure in solar cell module, and solar cell module |
Jan. 28, 2003 |
| 6369719 |
Apparatus and method for collecting and transmitting utility meter data and other information via a wireless network |
Apr. 9, 2002 |
| 6313756 |
Method for controlling an electric meter, and electric meter |
Nov. 6, 2001 |
| 5774068 |
Absolute signal detecting method and absolute encoder |
Jun. 30, 1998 |
| 5767790 |
Automatic utility meter monitor |
Jun. 16, 1998 |
| 5673131 |
High density, three-dimensional, intercoupled circuit structure |
Sep. 30, 1997 |
| 5641030 |
Powered tracked vehicle suitable for carriages for the disabled |
Jun. 24, 1997 |
| 5519389 |
Signal synchronized digital frequency discriminator |
May. 21, 1996 |
| 5442332 |
Vehicle interface system and method |
Aug. 15, 1995 |
| 5371496 |
Two-part sensor with transformer power coupling and optical signal coupling |
Dec. 6, 1994 |
| 5331319 |
Device for signalling the position of a mobile member |
Jul. 19, 1994 |
| 5270684 |
Oil consumption counter |
Dec. 14, 1993 |
| 5241306 |
System and method for introducing meter sensor hysteresis |
Aug. 31, 1993 |
| 5233355 |
Position transducer |
Aug. 3, 1993 |
| 5214587 |
Device for monitoring utility usage |
May. 25, 1993 |
| 5211539 |
Apparatus for indicating the pitch of turbofan blades |
May. 18, 1993 |
| 5196844 |
Method and apparatus for detecting reference rotational angle for each cylinder in multiple-cylinder internal combustion engine |
Mar. 23, 1993 |
| 5191328 |
Trailer hitching aid and method using reception delay of different velocity signals |
Mar. 2, 1993 |
| 5181026 |
Power transmission line monitoring system |
Jan. 19, 1993 |
| 5093625 |
Electrostatic spray gun voltage and current monitor with remote readout |
Mar. 3, 1992 |
| 5019814 |
Wireless data coupling system and method |
May. 28, 1991 |
| H911 |
Fiber optic link for detecting mechanical vibration in the presence of an electromagnetic field |
May. 7, 1991 |
| 5006846 |
Power transmission line monitoring system |
Apr. 9, 1991 |
| 4998294 |
Opto-electrical power transmission and control system |
Mar. 5, 1991 |
| 4962495 |
Apparatus and method for transmitting condition data from a rotating member to a stationary device |
Oct. 9, 1990 |
| 4958904 |
Optical slip ring |
Sep. 25, 1990 |
| 4955238 |
Optical sensor |
Sep. 11, 1990 |
| 4879760 |
Optical fiber transmissive signal modulation system |
Nov. 7, 1989 |
| 4792677 |
System for use with a utility meter for recording time of energy use |
Dec. 20, 1988 |
| 4757313 |
Positioning and abnormality control device |
Jul. 12, 1988 |
| 4751605 |
Reader for a digital trip device associated with a current breaking device |
Jun. 14, 1988 |
| 4727356 |
Optical rotary encoder |
Feb. 23, 1988 |
| 4686530 |
Cable transmission of signals |
Aug. 11, 1987 |
| 4683472 |
Signal reading system such as for remote reading of meters |
Jul. 28, 1987 |
| 4680704 |
Optical sensor apparatus and method for remotely monitoring a utility meter or the like |
Jul. 14, 1987 |
| 4673875 |
Apparatus including contact free transfer of signals for measuring the gap between relatively rotating refiner discs |
Jun. 16, 1987 |
| 4670750 |
Photoelectric impulse transmitter |
Jun. 2, 1987 |
| 4660036 |
Amplified motion encoder |
Apr. 21, 1987 |
| 4654660 |
Optical telemetric transceiver |
Mar. 31, 1987 |
| 4648710 |
Blind guide device |
Mar. 10, 1987 |
| 4646084 |
Meter reading methods and apparatus |
Feb. 24, 1987 |
| 4646086 |
Arrangement for data transmission between two mutually rotatable parts |
Feb. 24, 1987 |
| 4642634 |
Optical encoder |
Feb. 10, 1987 |
| 4639129 |
Method of measuring distance between two observation points |
Jan. 27, 1987 |
|
|
|
 |
|
 |
|
| |
Randomly Featured Patents |
|
