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

Icon_funbox Celebrity Inventors

Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.

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 218/60 - Piston structure


Subclass of Class 218 - High-voltage switches with arc preventing or extinguishing devices
Definition: Subject matter including structural details of a solid or
No. of applications: 1
Last issue date: 03/26/2009


Application No.Application TitleIssue Date
20090078680ARC CHAMBER OF A HIGH-VOLTAGE SWITCH WITH A HEATING VOLUME OF VARIABLE SIZE
An arc chamber is disclosed for a gas-insulated high-voltage switch. It contains a heating volume for accommodating compressed quenching gas from an arc zone. A part of the wall of the heating volume is formed by a piston which is displaceable against a restoring force.... 		03/26/2009
 
Sign InRegister
Username  
Password   
forgot password?