Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ON-LOAD TAP CHANGING DEVICE
Document Type and Number:
Japanese Patent JP2010135445
Kind Code:
A
Abstract:

To provide an on-load tap changing device which is compact, generates low switching noise, and can optimize a cutoff speed.

The on-load tap changing device is characterized in that the cutoff speed can be optimized and noise due to a cutoff can be reduced by mounting a hook spring 8 for driving and rotating a tap switch on a piston hook 10 of a piston and a cylinder hook 9 of a cylinder, and adjusting the operation speed of the hook spring 8 by boring a proper oil discharge hole in the cylinder hook 9.

COPYRIGHT: (C)2010,JPO&INPIT


Inventors:
IWATA MINORU
SUNAGA YOSHINORI
MOTOHASHI JUN
ITOI KAZUTOSHI
ENDO TOMOSHI
KOBAYASHI NOBORU
Application Number:
JP2008308053A
Publication Date:
June 17, 2010
Filing Date:
December 03, 2008
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
TAKAOKA ELECTRIC MFG CO LTD
TOKYO ELECTRIC POWER CO
International Classes:
H01F29/04
Domestic Patent References:
JPH04225507A1992-08-14
JP2007009537A2007-01-18
JPS50109432A1975-08-28
JPH07192939A1995-07-28
JP2000058339A2000-02-25
JPH11285996A1999-10-19
JPH04225507A1992-08-14
JP2007009537A2007-01-18