Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 340/870.32
Name: Communications: electrical > Continuously variable indicating (e.g., telemetering) > With particular transmitter (e.g., piezoelectric, dynamo) > Inductive transmitter > Mutual inductance
Description: Subject matter in which voltage is produced in one circuit by the magnetic field change in current in a neighboring circuit.


Sub-classes under this class:

Class Number Class Name Patents
340/870.35 Differential type 33
340/870.33 Flux valve type (e.g., with movable saturating magnet) 38
340/870.34 Self-synchronous type 35


Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
7005967 Validation of the presence of an electromagnetic transponder in the field of an amplitude demodulation reader Feb. 28, 2006
6982651 Automatic meter reading module Jan. 3, 2006
6885310 Phase difference detection device and method for a position detector Apr. 26, 2005
6720760 Induced current position transducers having improved scale loop structures Apr. 13, 2004
6636035 Position measuring device and error detecting method for the same, and electromagnetic induction position detecting device Oct. 21, 2003
6628115 Scale loops for electromagnetic induction-type absolute position transducer Sep. 30, 2003
6593730 Position sensor Jul. 15, 2003
6573707 Displacement detecting device power supply and data communication device Jun. 3, 2003
6552666 Phase difference detection device and method for a position detector Apr. 22, 2003
6545461 Electro magnetic induction position detector using metal foil to reduce temperature-based variations in position detection Apr. 8, 2003
6531873 Methods for discriminating between types of electric appliances connectable to a supplementary device Mar. 11, 2003
6522128 Position sensor having compact arrangement of coils Feb. 18, 2003
6486796 Relative-displacement detecting unit Nov. 26, 2002
6400138 Reduced offset high accuracy induced current absolute position transducer Jun. 4, 2002
6335618 Position transducer having position-dependent amplitude encoding applying first and second modulations Jan. 1, 2002
6329813 Reduced offset high accuracy induced current absolute position transducer Dec. 11, 2001
6313624 Position sensor with integrated signal-conditioning electronics on a printed wiring board Nov. 6, 2001
6304825 Rotary encoder error compensation system and method for photoreceptor surface motion sensing and control Oct. 16, 2001
6271661 Absolute position transducer having a non-binary code-track-type scale Aug. 7, 2001
6259249 Induction-type position measuring apparatus Jul. 10, 2001
6255810 Inductive angle sensor having coupled oscillators with similar inductive response Jul. 3, 2001
6236199 Inductive angle sensor May. 22, 2001
6157188 Compact, long-range absolute position transducer with an extensible compact encoding Dec. 5, 2000
6144206 Magnetometer with waveform shaping Nov. 7, 2000
6124708 Position detection using a spaced apart array of magnetic field generators and plural sensing loop circuits offset from one another in the measurement direction Sep. 26, 2000
6111402 Position measuring instrument having a scanning element with multiple scanning tracks Aug. 29, 2000
6100816 Utility meter adapter Aug. 8, 2000
6054851 Induced current absolute position transducer method using a code-track-type scale and read head Apr. 25, 2000
6049204 Electronic linear scale using a reduced offset high accuracy induced current position transducer Apr. 11, 2000
6034624 Induction-type linear position detector device Mar. 7, 2000
6005387 Reduced offset high accuracy induced current position transducer Dec. 21, 1999
6002250 Electronic linear scale using a self-contained, low-power inductive position transducer Dec. 14, 1999
5998990 Pitch-compensated induced current position transducer Dec. 7, 1999
5936399 Inductive position transducer having a multi-tap receiver winding Aug. 10, 1999
5886519 Multi-scale induced current absolute position transducer Mar. 23, 1999
5841274 Induced current absolute position transducer using a code-track-type scale and read head Nov. 24, 1998
5804963 Inductive displacement sensor with a cursor and a movable coupling scale Sep. 8, 1998
5793202 Position sensor, employing electromagnetic induction Aug. 11, 1998
5740080 Apparatus for measuring and transmitting process conditions Apr. 14, 1998
5625352 Method and arrangement for transmitting data, signals and energy Apr. 29, 1997
5612684 Mass transit inductive data communication system Mar. 18, 1997
5574441 Mass transit inductive data communication system Nov. 12, 1996
5572445 Industrial mobile process monitor system Nov. 5, 1996
5473323 Apparatus for contactless energy and data transmission for single coil and two-coil systems Dec. 5, 1995
5381091 Sensor having mutually perpendicular sections using zigzag coils for detecting displacement Jan. 10, 1995
5297439 Magnetoelastic stress sensor Mar. 29, 1994
5187475 Apparatus for determining the position of an object Feb. 16, 1993
5168222 Signal processor circuit with signal multiplexing, sampling and multiplying for processing orthogonally received signals in electromagnetic position detection system Dec. 1, 1992
5142280 Apparatus for a contact-free transmission of electrical signals Aug. 25, 1992
4932006 Process for signal transmission without electric connection through a conducting wall, the hull of a ship for example, and a device for implementing same Jun. 5, 1990

1 2 3


 
 
  Recently Added Patents
Surface light source device of side light type, liquid crystal display and guide plate
Reagent for immature leukocyte analysis and reagent kit
Television
Semiconductor memory device and its test method
System and method for dynamically refreshing an active home screen
Closed compression-type coaxial cable connector
Cargo vehicle with drag reduction
  Randomly Featured Patents
Silicate fouling control during dihydric alcohol distillation
String mop with wringer
Methods of preparing polymeric foams using cyclic urea blowing promoters
Acryl-type two-part liquid adhesive composition
Aluminized chromized steel
Unit for production of tubular resin film
Radio transmitter and method of controlling transmission by radio transmitter
Cyclohexyl phenethylether derivatives, process for preparing same and uses thereof in combatting tobacco beetles and in augmenting or enhancing the aroma of perfumes, colognes and perfumed art
Auxiliary towel rack
Take-out mechanism for a glassware forming machine