Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1732/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :04/05/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : METHOD FOR CREATING AN INNER THREAD AS WELL AS A COMBINATION OF A
THREAD CUTTER AND A BODY HAVING A CUTOUT
(51) International classification :B23G1/16
(31) Priority Document No :102011075770.8
(32) Priority Date :12/05/2011
(33) Name of priority country :Germany
(86) International Application No
:NA
Filing Date
:NA
(87) International Publication No : NA
(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)HILTI AKTIENGESELLSCHAFT
Address of Applicant :FELDKIRCHERSTRASSE 100,
9494 SCHAAN Liechtenstein
(72)Name of Inventor :
1)FLOETER, FELIX
(57) Abstract :
A method for creating an inner thread in an opening (12) of a body (14), using a thread cutter (10), whereby the opening (12) has
at least one groove (18) that runs essentially in the longitudinal direction (R), and a projection (20) that extends radially inwards
and axially is provided after the groove (18) as seen in the circumferential direction (U), characterized by the following steps: a)
the thread cutter (10), which has an axial lengthwise cutout (22) adjacent to which in the circumferential direction (U) there are
blades that project radially outwards and that have cutting edges (24), is inserted into the opening (12), whereby several cutting
edges (24) arranged one after the other in the longitudinal direction (R) are provided on the lengthwise cutout (22), which are
offset with respect to each other in the circumferential direction (U), and which are pushed into the groove (18) when the thread
cutter (10) is being inserted, b) the cutting tool (10) is rotated by a maximum of 360° in order to create the entire inner thread in
the projection (20), whereby the cutting edges (24) penetrate into the projection (20) one after the other as the thread cutter (10)
turns, and c)- the thread cutter (10) is moved axially out of the opening (12).
No. of Pages : 18 No. of Claims : 10
The Patent Office Journal 21/06/2013 13904