U.S. patent application number 12/317274 was filed with the patent office on 2009-06-25 for injection-securable anchor and anchor tube for the injection-securable anchor.
This patent application is currently assigned to Hilti Aktiengesellschaft. Invention is credited to Herbert Ginter, Christian Plockross, Martin Reuter.
Application Number | 20090158678 12/317274 |
Document ID | / |
Family ID | 40578484 |
Filed Date | 2009-06-25 |
United States Patent
Application |
20090158678 |
Kind Code |
A1 |
Ginter; Herbert ; et
al. |
June 25, 2009 |
Injection-securable anchor and anchor tube for the
injection-securable anchor
Abstract
An anchor tube for an injection-securable anchor includes a
through-opening (13) for receiving a fastening element (8) and at
least first connection element (32) provided on at least first end
(14) of the anchor tube (12) for securing, on the anchor tube (12),
a further part of the injection-securable anchor (11).
Inventors: |
Ginter; Herbert;
(Kaufbeuren, DE) ; Plockross; Christian; (Munich,
DE) ; Reuter; Martin; (Schwabwinchen, DE) |
Correspondence
Address: |
ABELMAN, FRAYNE & SCHWAB
666 THIRD AVENUE, 10TH FLOOR
NEW YORK
NY
10017
US
|
Assignee: |
Hilti Aktiengesellschaft
|
Family ID: |
40578484 |
Appl. No.: |
12/317274 |
Filed: |
December 19, 2008 |
Current U.S.
Class: |
52/223.14 ;
411/82.3 |
Current CPC
Class: |
F16B 13/146
20130101 |
Class at
Publication: |
52/223.14 ;
411/82.3 |
International
Class: |
E04C 5/08 20060101
E04C005/08; E04C 1/41 20060101 E04C001/41 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 20, 2007 |
DE |
10 2007 055 893.9 |
Claims
1. An anchor tube for an injection-securable anchor for attaching a
face brickwork to a loadbearing brickwork, comprising a
through-opening (13) for receiving a fastening element (8); and at
least first connection element (32) provided at least at a first
end (14) of the anchor tube (12) for securing, on the anchor tube
(12), a further part of the injection-securable anchor (11).
2. An anchor tube according to claim 1, comprising a second
connection element (53) provided at a second end (15) of the anchor
tube (12) opposite the first end (14) for securing, on the anchor
tube (12), a still further part of the injection-securable anchor
(11).
3. An anchor tube according to claim 1, wherein the first
connection element (32) comprises locking noses.
4. An anchor tube according to claim 2, wherein the second
connection element (53) comprises locking recesses cooperating with
locking noses provided on the still further part of
injection-securable anchor (11).
5. An anchor tube according to claim 2, wherein the first
connection-element (32) and the second connection element (53) each
comprises a plurality of connecting members.
6. An anchor tube according to claim 5, wherein the plurality of
connecting members are uniformly circumferentially
rotationally-symmetrically distributed at respective one of the
first (14) and second (15) ends of the anchor tube (12).
7. An anchor tube according to claim 6, wherein the plurality of
connecting members (32; 53) comprises at least three connecting
members.
8. An injection-securable anchor for attaching a face brickwork (5)
to a loadbearing brickwork (6), comprising a fastening element (8);
a further part (22); and an anchor tube (12) having a
through-opening (13) for receiving the fastening element (8) and at
least first connection element (32) provided on at least first end
(14) of the anchor tube (12) and cooperating with a complementary
counter-connection element (33) provided on the further part (22)
for securing the further part (22) on the anchor tube (12).
9. An injection-securable anchor according to claim 8, wherein the
counter-connection element (33) is provided at a first end (23) of
the further part (22).
10. An injection-securable anchor according to claim 9, wherein the
first connection element (32) comprises a plurality of locking
noses, and the counter-connection element (33) comprises a
plurality of locking recesses for receiving respective locking
noses of the plurality of locking noses.
11. An injection-securable anchor according to claim 10, wherein
the plurality of locking noses and the plurality of locking
recesses are uniformly circumferentially rotationally-symmetrically
distributed at respective first ends (14, 23) of the anchor tube
(12) and the further part (22), respectively.
12. An injection-securable anchor according to claim 8, wherein the
further part (22) is formed as a sieve sleeve.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to an injection-securable
anchor for attaching a face brickwork to a loadbearing brickwork
and, in particular, to an anchor tube for such an anchor and having
a through-opening for receiving a fastening element.
[0003] 2. Description of the Prior Art
[0004] An injection-securable anchor is set after raising a
two-wall brickwork usually through a joint in the face brickwork,
which is also called a face wall, and transmits tension and
compression forces acting on the face brickwork to the loadbearing
brickwork which is also called a loadbearing wall. Frequent use of
such an injection-securable anchor necessitates an additional
reconnection of a two-wall brickwork. This is because at a
forcelocking connection of both brickworks with each other, due to
the corrosion of the connection element that was walled in during
formation of the two-wall brickwork, the connection is
destroyed.
[0005] German Publication DE 30 04 276 A1 discloses an anchor tube
for an injection-securable anchor and which has a through-opening
for receiving a fastening element. The anchor tube can be provided
in the regions of its ends with radial openings. For setting the
injection-securable anchor, firstly a borehole is formed in the
loadbearing brickwork through the face brickwork and the air layer
between the face brickwork and the loadbearing brickwork. Then, the
anchor tube is inserted in the borehole. Finally, the
injection-securable anchor is filled with injection mortar through
a through-opening of the anchor tube. Upon insertion of the
fastening element, the injection mortar that fills the anchor is
pressed out at the ends of the anchor tube. The length of the
circumferentially closed section of the anchor tube is so selected
that this section bridges the air layer between the face brickwork
and the loadbearing brickwork.
[0006] The drawback of the anchor tube disclosed in DE 30 04 276 A1
consists in that in practice, different two-wall brickworks with
different width of the stone and air layers are raised and,
therefore, a large number of differently formed anchor tubes must
be available to the user to insure that advantages of such an
injection-securable anchor are achieved.
[0007] German Publication DE 102 22 799 A1 discloses sieve sleeves
having radial wall sections with connection means provided at their
ends. Several of such sieve sleeves are assembled to form a dowel
body. After setting of such a dowel body in a borehole, it is
filled with an injection mortar, and then a fastening element is
inserted, with the injection mortar being forced out outwardly
through the sieve-shaped radial sections in a controlled
manner.
[0008] An object of the present invention is an anchor tube for an
injection-securable anchor for attaching a face brickwork to a
loadbearing brickwork, which injection-securable anchor, which
includes the anchor tube, is suitable for different types and
embodiments of two-wall brickworks.
SUMMARY OF THE INVENTION
[0009] This and other objects of the present invention, which will
become apparent hereinafter, are achieved by providing an anchor
tube having a through-opening for receiving a fastening element and
at least first connection element provided at least at the first
end of the anchor tube for securing, on the anchor tube, a further
part of the injection-securable anchor.
[0010] Dependent on the width of the air layer or the distanced
between the face brickwork and the loadbearing brickwork or between
the brickwork walls of a two- or multi-wall brickwork, an anchor
tube having a corresponding length is selected and is connected by
the connection element, which is provided at its first end, with a
further part to form an injection-securable anchor. The further
part has a complementary, to the first connection element of the
anchor tube, counter-connection element. As a further part, e.g., a
sieve sleeve, which is formed in accordance with the borehole depth
in the loadbearing brickwork and connectable with the anchor tube,
can be selected. The anchor tube according to the present invention
can be connected, e.g., with sieve sleeves disclosed in DE 102 22
799 A1.
[0011] Anchor tube of different types and lengths and/or sieve
sleeves of different types and lengths can be associated to form
injection-securable anchor for connecting a face brickwork with a
loadbearing brickwork by the user, as needed, directly on the
constructional site. An injection-securable anchor that includes an
anchor tube according to the present invention is a modular
structure. With a small number of differently formed anchor tubes
and sieve sleeves, a large number of different constructions of
two-wall brickworks can be reliably formed. The injection-securable
anchor can be simply and quickly adapted to actual use conditions
at the constructional site such as, e.g., stone type, thickness or
quality of the loadbearing brickwork and/or the face breakwork,
and/or width of the air layer.
[0012] Advantageously, a second connection element provided at a
second end of the anchor tube opposite the first end for securing,
on the anchor tube, a still further part of the injection-securable
anchor. This permits to connect several anchor tubes according to
the present invention with each other to bridge a correspondingly
greater distance between the face brickwork and the loadbearing
brickwork or a very wide air layer. Also a sieve sleeve can be
mounted also on the second end of the anchor tube and which in a
set condition of the injection-securable anchor, would be located
in the face brickwork. This would insure an improved anchoring of
the anchor in the face brickwork. The second sieve sleeve makes
possible a purposeful anchoring of the anchor in the face
brickwork. The above-discussed injection-securable anchor is
particularly advantageous when the brickwork has joints with a poor
grouting quality. It is particularly advantageous when a sieve
sleeve is provided at each end of the anchor tube.
[0013] In addition, further connection or counter-connection
elements can be provided at a free end of the sieve sleeve that is
connectable with the inventive anchor tube. The further connection
or counter-connection elements enable attachment of further sieve
sleeves to the sieve sleeves already mounted on the anchor
tube.
[0014] Advantageously, the connection element includes locking
noses that form together with locking recesses forming the
counter-connection elements, a connection device. The locking noses
have each advantageously a section projecting from the outer
profile and which insures a simple assembly of the elements of the
injection-securable anchor. Advantageously, the locking noses fall
off the elevated section transverse to the outer profile of a
respective part. Thereby, an advantageous undercut with an edge
region of the locking recesses is produced in the assembled
condition of anchor parts.
[0015] According to an alternative embodiment, the connection
elements have locking recesses, cooperating with locking noses.
This insures a reliable assembly of the parts of the
injection-securable anchor. The locking recesses can be simply
produced.
[0016] Advantageously, locking noses are formed at one end of the
anchor tube, and locking recesses are formed at the other end of
the anchor tube. This insures an easy assembly of several anchor
tubes according to the present invention with each other.
[0017] Advantageously, several connection elements are provided at
an anchor tube end and which cooperate with a respective plurality
of counter-connection elements. The connection devices, which are
formed by cooperating connection and counter-connection elements,
insure a reliable connection of the parts of the
injection-securable anchor with each other.
[0018] Advantageously, a plurality of connection elements is
uniformly circumferentially rotationally-symmetrically distributed
at an end of the anchor tube. Advantageously, the plurality of the
counter-connection elements is likewise uniformly circumferentially
rotationally symmetrically distributed on the further part of the
anchor and which is connectable with the anchor tube. This insures
an even more reliably connection of the parts of the anchor.
[0019] Advantageously, at an end of the anchor tube, there are
provided at least three connection elements, with the same number
of the counter-connection elements being provided at a respective
end of the further part that is assembled with the anchor tube.
This permits to insure a predetermined alignment of parts of the
anchor relative to each other. In this way, the anchor part, that
is assembled with the anchor tube, has the same number of
counter-connection or connection elements.
[0020] Advantageously, the anchor tube is formed of a plastic
material. The sieve sleeve, which is connectable with the anchor
tube, is also formed, at least in some regions, also of a plastic
material. It is particularly advantageous when all parts of an
injection-securable anchor are formed of a plastic material by an
injection-molding process, which insures a simple production of the
connection devices.
[0021] The novel features of the present invention, which are
considered as characteristic for the invention, are set forth in
the appended claims. The invention itself, however, both as to its
construction and its mode of operation, together with additional
advantages and objects thereof, will be best understood from the
following detailed description of preferred embodiment, when read
with reference to the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The drawings show:
[0023] FIG. 1 a cross-sectional view along line I-I in FIG. 2 of a
first embodiment of an injection-securable anchor according to the
present invention in a set condition;
[0024] FIG. 2 a side view of an anchor tube according to the
present invention for the injection-securable anchor;
[0025] FIG. 3 a side view of a first sieve sleeve of the inventive
injection-securable anchor;
[0026] FIG. 4 a side view of a second sieve sleeve of the inventive
injection-securable anchor; and
[0027] FIG. 5 a side view of a second embodiment of an
injection-securable anchor according to the present invention.
[0028] In the drawings, the same elements are designated with the
same reference numerals.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0029] An injection-securable anchor 11, which is shown in its
entirety in FIG. 1 and details of which are shown in FIGS. 2 and 3,
includes, according to the present invention, an anchor tube 12
with a through-opening 13 for receiving a fastening element 8, and
a sieve sleeve 22 connectable with the anchor tube 12. First
connection means 31 connects the sieve sleeve 22 with the anchor
tube 12.
[0030] For attaching a face brickwork 5 to a loadbearing brickwork
6, a borehole 9 is formed in the loadbearing brickwork 6 through
the joint of the face brickwork 5 and the air layer 7. After the
borehole 9 has been rinsed, the modular, assembled
injection-securable anchor 11, together with the sieve sleeve 22,
is passed through until the sieve sleeve 22 is located in the
borehole 9. Then, the injection-securable anchor 11 is filled with
injection mortar, and the fastening element 8, e.g., a
cut-to-length threaded rod is inserted in the injection-securable
anchor 11 through the through-opening 13 of the anchor tube 12.
Then, the injection mortar is brought out, in particular, in the
region of the sieve sleeve 22, reliably anchoring the anchor 11 in
the loadbearing brickwall 6. The anchoring in the face brickwork 5
advantageously is carried out by filling or compressing the space
between the anchor 11 or the fastening element 8 and the face
brickwork.
[0031] The inventive tube 12, which is shown in FIG. 2, has, in
addition to the through-opening 13, a first connection element 32
provided at a first end 14 of the anchor tube 12 and formed of four
locking noses uniformly rotationally symmetrically, distributed
over the circumference of the anchor tube 12. On the opposite
second end 15 of the anchor tube 12, there is provided a second
connection element 53 formed of four locking recesses uniformly
rotationally symmetrically, distributed over the circumference of
the anchor tube 12. The first connection element 32 and the second
connection element 53 form part, respectively, of the first
connection means 31 and second connection means 51.
[0032] On the outer circumference of the anchor tube 12, there are
further provided a plurality of rings 16 which function as
condensate-draining rings and prevent condensate flow from the face
brickwork 5 to the loadbearing brickwork 6 along the anchor tube 12
in the assembled condition of the anchor 11.
[0033] The sieve sleeve 22, which is shown in FIG. 3, has, at its
first end 23, a counter-connection element 33 displaceable together
with a first connection element 32 of the anchor tube 12 and
formed, similar to the second connection element 53 of the anchor
tube 12, of four locking recesses uniformly
rotationally-symmetrically distributed over the circumference of
the sieve sleeve 22.
[0034] The sieve sleeve 42, which is shown in FIG. 4 is shorter
than the sieve sleeve 22 shown in FIG. 3. The sieve sleeve 42 has,
at its second end 44 opposite its first end 43, a second
counter-connection element 52 formed of four locking noses
uniformly rotationally-symmetrically distributed over the
circumference of the sieve sleeve 42 and forming part of the second
connection means 51.
[0035] FIG. 5 shows a modular assembled injection-securable anchor
41 having, at the first end 14 of its anchor tube 12, the sleeve 22
and, at the second end 15 of the anchor tube 12, the sleeve 42. The
sieve sleeve 22 and the sieve sleeve 42 are secured on the anchor
tube 12 with the first connection means 31 and the second
connection means 51, respectively. The second connection means 51
is formed by the second connection element 53, which is provided on
the second end 15 of the anchor tube 12 and by the
counter-connection element 52 provided on the sieve sleeve 42. In
the set condition of the anchor 41, the sieve sleeve 42 is located
in the face brickwork 5, and the sieve sleeve 22 is located, as it
was described with reference to the anchor 11, in the loadbearing
brickwork.
[0036] Though the present invention was shown and described with
references to the preferred embodiment, such is merely illustrative
of the present invention and is not to be construed as a limitation
thereof and various modifications of the present invention will be
apparent to those skilled in the art. It is therefore not intended
that the present invention be limited to the disclosed embodiment
or details thereof, and the present invention includes all
variations and/or alternative embodiments within the spirit and
scope of the present invention as defined by the appended
claims.
* * * * *