Resources Contact Us Home
Browse by Category: Main > Electrical & Energy
Class Information
Number: 361/245
Name: Electricity: electrical systems and devices > Polarity reversing
Description: Subject matter relating to the reversing of the polarity of an electric circuit.

Sub-classes under this class:

Class Number Class Name Patents
361/246 Automatic 43

Patents under this class:

Patent Number Title Of Patent Date Issued
8390150 Field device interface with network protection mechanism Mar. 5, 2013
8382992 Reducing waterborne bacteria and viruses by a controlled electric field Feb. 26, 2013
8072189 Charge and discharge control circuit and battery device Dec. 6, 2011
7551412 Wiring fault correction circuit Jun. 23, 2009
7534104 Adapter for light emitting apparatus used in the medical field May. 19, 2009
7312653 NMOS reverse battery protection Dec. 25, 2007
7199722 Two wire alarm Apr. 3, 2007
7180135 Double gate (DG) SOI ratioed logic with intrinsically on symmetric DG-MOSFET load Feb. 20, 2007
7130179 Switching device provided with polarity-inverting means Oct. 31, 2006
7110239 Polarity correction circuit and system incorporating the same Sep. 19, 2006
7106567 Hard disk drive (HDD) electrical over voltage stress (EOS) systems and methods Sep. 12, 2006
6582103 Lighting apparatus Jun. 24, 2003
6493205 Process for polarizing a ferroelectric material in the shape of a cylinder Dec. 10, 2002
6429550 Polarity reversal protection circuit for a final electronic power stage Aug. 6, 2002
6166451 Distributed airbag firing system and interface circuit therefor Dec. 26, 2000
6064125 Uninterruptible power supply unit May. 16, 2000
5912514 Uninterruptible power supply unit Jun. 15, 1999
5815388 Polarity reversing circuit having energy compensation Sep. 29, 1998
5682067 Circuit for reversing polarity on electrodes Oct. 28, 1997
5539610 Floating drive technique for reverse battery protection Jul. 23, 1996
5253138 Simplified supplying system of the position identification potentiometers of electronic memory mechanisms of a motor for setting automobile vehicle seats and the like Oct. 12, 1993
5206540 Transformer isolated drive circuit Apr. 27, 1993
5191507 Polarity inverting circuit Mar. 2, 1993
5187720 Synchronous serial communication circuit Feb. 16, 1993
5126914 Current inverter for an incandescent lamp in a car radio Jun. 30, 1992
5099385 Protected reversing contractor using a multifunctional transmission systrem for controlling acknowledgement switches Mar. 24, 1992
4947285 Reversing circuit for direction reversal in direct current drives Aug. 7, 1990
4906861 Superconducting current reversing switch Mar. 6, 1990
4803587 Arrangement for change-over contact apparatus protection with interlocking member and module Feb. 7, 1989
4792702 Switch for iontophoresing cation and anion Dec. 20, 1988
4737897 Regulated high voltage dc-dc converter with remotely switched output polarity control Apr. 12, 1988
4647834 Battery charger Mar. 3, 1987
4576262 Method and apparatus for operating a magnetic clutch Mar. 18, 1986
4224538 Series supervision/parallel actuation device Sep. 23, 1980
4204243 Polarity indicating and reversing unit May. 20, 1980
4144483 Electrical polarity switch for battery Mar. 13, 1979
4071879 Reversible current apparatus Jan. 31, 1978
3957333 Universal control system interface May. 18, 1976

  Recently Added Patents
Expressive grouping for language integrated queries
Wireless control kit for camera
Adjustable box extender
Systems and methods for restoring images
Sulfonated amorphous carbon, process for producing the same and use thereof
Segmenting video based on timestamps in comments
Antibodies to non-functional P2X.sub.7 receptor
  Randomly Featured Patents
Thermal print head printer including a platen
Methods of providing therapeutic effects using cyclosporin components
Rimless eyeglass components
Broadband microstrip antenna having a microstrip feedline trough formed in a radiating element
Method of making shackle
Downhole pump with check valve
Slider basecoat for thermal PTR reduction
Practice cue ball
Acid-free catalyst paste, its production and its use in cathodic electro-dip coating
System for detecting and removing a gas bubble from a vascular infusion line