Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.2946/MUM/2011 A
(19) INDIA
(22) Date of filing of Application :19/10/2011 (43) Publication Date : 21/06/2013
(54) Title of the invention : CURRENT LIMITING CIRCUIT BREAKER WITH CONTACT LOCKING ARRANGEMENT
FOR HIGH ELECTRO DYNAMIC WITHSTAND
(51) International classification :H01H1/00
(31) Priority Document No :NA
(32) Priority Date :NA
(33) Name of priority country :NA
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No :N/A
(61) Patent of Addition to Application Number :NA
Filing Date
:NA
(62) Divisional to Application Number
:NA
Filing Date
:NA
(71)Name of Applicant :
1)LARSEN & TOUBRO LIMITED
Address of Applicant :L&T HOUSE,BALLARD
ESTATE,MUMBAI- 400 001, MAHARASHTRA, INDIA.
(72)Name of Inventor :
1)SUNIL DAYALAPALLI
(57) Abstract :
A contact locking arrangement for a circuit breaker is provided. The contact locking arrangement comprises a drive shaft, a
moving contact and a locking assembly coupled to the moving contact and the drive shaft. The locking assembly has a first and
second upper link, a first and second lower link and a plurality of springs connecting the first upper link to the second upper link,
wherein in ON condition locking assembly produces counter clockwise torque on the moving contact to restrain movement of the
contact. Reference
No. of Pages : 16 No. of Claims : 2
The Patent Office Journal 21/06/2013 13618