Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1453/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :11/04/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : EXPANSION PLUG
(51) International classification :F16B 29/00
(31) Priority Document No :102011007570.4
(32) Priority Date :18/04/2011
(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)SCHAEFFER, MARC
2)OBERNDORFER, GEORG
(57) Abstract :
When it comes to an expansion plug (1) comprising an anchor bolt (2) with an expansion element (3) on a first end section (6) of
the anchor bolt (2) having a longitudinal axis (10), preferably also comprising at least one force-applying means (20) on the
anchor bolt (2) in order to hold loads, and also comprising an expansion sleeve (4) surrounding the anchor bolt (2), the objective is
to avoid an axial movement of the expansion sleeve (14), especially in the case of a drilled hole diameter in the lower tolerance
range or in the case of a hollow space. This objective is achieved in that the expansion plug (1) has at least one eccentric
geometry, so that an expansion of the expansion sleeve (4) can be achieved by means of a rotational movement of the anchor bolt
(2), especially around the longitudinal axis (10) as the axis of rotation (9).
No. of Pages : 19 No. of Claims : 15
The Patent Office Journal 21/06/2013 13825