U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Did You Know...

...that Robert Adler has the dubious distinction of being the Father of the Couch Potato? Back in 1955 Adler was employed by what was then Zenith Radio Corp., where he was charged to invent something that would allow viewers to turn down the TV volume without leaving their chairs. After a series of flops (such as a wired contraption that people tripped over), Adler hit on the idea of using sound waves. Thus the Remote Control was born...

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 191/7 - Alternating-alternating


Subclass of Class 191 - Electricity: transmission to vehicles
Definition: Systems of distribution wherein the current source is alternating
No. of applications: 1
Last issue date: 01/13/2011


Application No.Application TitleIssue Date
20110005879DEVICE FOR CONNECTING A SINGLE-PHASE SUPPLY LINE TO A THREE-PHASE POWER SUPPLY SYSTEM
A device for connecting at least one single-phase power supply line which, in particular, feeds the overhead line of a railroad track, to a three-phase power supply network. A primary side of a transformer is connected to the power supply network and a secondary side is...
01/13/2011
 
Sign InRegister
Username  
Password   
forgot password?