Title of Invention

A TWISTLOCK DEVICE FOR THE CONNECTION OF TRANSPORT APPARATUSES

Abstract A twistlock device for the connection of transport apparatuses is disclosed. The device comprises: an elongate central portion (10, 11) and two lock members (14, 15) for engagement into corner fitments of the transport apparatuses, a rotary handle for rotating the central portion; and a lever on each lock member; wherein the two lock members (14, 15) respectively cooperate with the ends of the central portion (10, 11) in such a way that the two lock members (14, 15) are adapted to be movable along the longitudinal axis of the central portion (10, 11); and wherein the spacing of the lock members relative to each other is caused to be adjusted by way of the rotary handle on the central portion so that said spacing corresponds to the spacing of the corner fitments at the transport apparatuses.
Full Text The present invention concerns a twistlock device for the connection of
transport devices.
Such devices are known in the form of what are referred to as twistlocks
and are used for example to connect together transport apparatuses such as
for example containers, open transport containers, transport support and cradle
structures and the like. For that purpose those twistlocks are fitted into
oppositely disposed corner fitments of the containers and the lock members are
rotated by actuation of the rotary handle with respect to the central portion. Due
to the rotary movement of the lock members they engage into the
corresponding corner fitment in such a way that release therefrom is prevented.
Such a connection provides a force-locking engagement between
horizontally and/or vertically adjacent containers so that the individual
containers are connected fixedly but releasably to afford a block comprising a
plurality of containers. Connecting containers which are standing in mutually
juxtaposed relationship increases the ground-contacting base area and thus
naturally also increases the stability of the containers in terms of standing. It will
be appreciated however that the known twistlocks can be used only in relation
to predetermined spacings between the transport apparatuses or only in
relation to the uppermost stacked containers.
In the event of differing spacings between the transport apparatuses, it is
possible to provide for a bracing anchoring effect with bracing cables, for load-
securing purposes. It will be noted however that that presupposes
corresponding abutment options which however are not always available or
which cannot be used for other reasons, for example transport packet
assemblies which just on their own occupy a plurality of container placement
locations in the longitudinal direction.
DE 196 52 817 C1 discloses a kit for the rigid connection of two
containers provided at their corners with hollow corner fitments. DE 1 581 134
discloses a coupling member for transport containers. DE 196 21 456 A1
discloses a stowage portion for stowing transport containers in mutually
juxtaposed relationship. US No. 4 993 125 discloses a connecting element for
containers. US No. 3 683 463 discloses a connecting element for containers.
Contrary to the present invention, US 3 683 463 relates to an interstack bridge
and shore for cargo containers. This document does not disclose a rotary
handle for rotating the central portion. Furthermore, this document does not
show a lever on each lock member. The teaching of this document does not
comprise any hint to improve a twist lock device.
Therefore the object of the invention is to provide a device which permits
an improved connection of transport apparatuses.
That object is attained by a device for the connection of transport
apparatuses according to the invention in which a twistlock device for the
connection of transport apparatuses, comprises: an elongate central portion
and two lock members for engagement into corner fitments of the transport
apparatuses, a rotary handle for rotating the central portion; and a lever on
each lock member; wherein the two lock members respectively co-operate with
the ends of the central portion in such a way that the two lock members are
adapted to be movable along the longitudinal axis of the central portion; and
wherein the spacing of the lock members relative to each other is caused to be
adjusted by way of the rotary handle on the central portion so that said spacing
corresponds to the spacing of the corner fitments at the transport apparatuses.
Thus there is provided a device for the connection of transport
apparatuses, in particular a twistlock, which has an elongate central portion and
two lock members for engagement into corner fitments of the transport
apparatuses. The two lock members respectively co-operate with the ends
of the central portion in such a way that the two lock members are adapted
to be displaceable along the longitudinal axis of the central portion.
In that respect the invention is based on the realisation that, with
fundamentally identical mechanical requirements as on the state of the art,
the range of use of the device according to the invention is substantially
dependent on the length of the central portion. The length of the central
portion determines the adjustment range of the device.
In accordance with an embodiment of the invention the central portion
has a male screwthread at at least one of its ends and at least one of the two
lock members has a hole with a corresponding female screwthread so that, by
rotation of the central portion, the male screwthread thereof co-operates with
the female screwthread of the lock member and the lock member is moved
along the longitudinal axis of the central portion.
By virtue of rotating the central portion the lock members which co-
operate with the central portion are moved away from each other or towards
each other in dependence on the direction of rotation. The position of the lock
members can thus be easily adapted to the spacing of the transport
apparatuses.
In a preferred configuration of the invention there is provided a lever on
each lock member. In that way the spacing of the lock members relative to
each other can be so adjusted by way of a rotary handle on the central portion
that that spacing corresponds to the spacing of the corner fitments at the
transport apparatuses. When the lock members are in their predetermined
position, each lock member can be rotated by the lever mounted thereto so that
a connection is made between the transport apparatuses and the device
according to the invention, as is known from the state of the art, but with
different spacings in respect of the transport apparatuses relative to each other.
In a further configuration each lever in that case is mounted substantially
perpendicularly or radially with respect to the longitudinal axis of the central
portion in order to permit particularly simple rotation of each lock member into
the desired locking or unlocking position.
In a preferred configuration of the invention there is provided a bore in at
least one lock member. The central portion of the device according to the
invention can be recognised through that bore. Suitable positioning of that bore
makes it possible to ensure that the connection between the central portion and
the lock member is at any event sufficient as long as the central portion is still
to be seen in the bore. That makes it possible to prevent unintentional incorrect
fitment by virtue of rotating the central portion excessively far out of the lock
members.
In a preferred embodiment of the device, the central portion has a male
screwthread at at least one of its ends and at least one of the two lock
members has a hole with a corresponding female screwthread so that by
rotating the central portion the male screwthread on the central portion co-
operates with the female screwthread of the lock member and the lock member
is moved along the longitudinal axis of the central portion. The lever is
preferably mounted substantially radially with respect to the longitudinal axis of
the central portion. Preferably, the device comprises a securing plate on at
least one of the two lock members, the securing plate being displaceable
substantially radially with respect to the longitudinal axis of the central portion.
The device may have a bore provided in at least one of the two lock members:
The invention is described in greater detail hereinafter with reference to
the accompanying drawings in which:
Figure 1 shows a perspective view of a twistlock in accordance with a
first embodiment of the invention,
Figure 2 shows a perspective view of a twistlock in accordance with a
second embodiment of the invention, and
Figure 3 shows a side view of a part of the twistlock shown in Figure 2.
Figure 1 shows a perspective view of a twistlock according to a first
embodiment of the invention. The twistlock substantially comprises a central
portion 10 and two lock members 14 which are respectively arranged at the two
ends of the central portion 10. Fixed to the two lock members 14 is a respective
lever 16 which extends radially with respect to the longitudinal axis of the
central portion 10. A rotary handle 12 is fixed to the central portion 10.
A male screwthread is provided at each of the two ends of the central
portion 10. That male screwthread co-operates with a female screwthread in a
hole in each of the lock members so that the two lock members can be
screwed on to the two ends of the central portion 10, that is to say a left-hand
and a right-hand screwthread co-operate.
By virtue of rotation of the rotary handle, the central portion 10 is rotated
and the lock members 14 which co-operate with the central portion 10 are
moved away from or towards each other, depending on the direction of rotation.
The position of the lock members can thus be adapted in a simple manner to
the spacing of the transport apparatuses.
The two levers 16 on the two lock members 14 serve to rotate the lock
members in such a way that, when the lock members 14 are positioned in a
predetermined longitudinal position in relation to the corner fitments on the
transport apparatuses, a connection is made between the transport
apparatuses and the twistlock. The perpendicular or radial arrangement of the
levers 16 relative to the longitudinal axis of the central portion 10 permits
simple rotary movement of the lock member 14 for locking or unlocking
purposes.
The twistlock is held in the corner fitment by an undercut configuration,
as is also known in the state of the art. For that purpose the corner fitment is
internally hollow and has at least one hole, the length of which is greater than
its width. The lock member 14 which is to be fitted into the corner fitment is of
comparable proportions. The lock member 14 can therefore be fitted into the
comer fitment.
When now the lock member 14 is rotated through about 90° by means of
the lever 16, its longitudinal extent extends in the direction of the width of the
opening in the corner fitment. As the longitudinal extent of the lock member 14
is greater than that width of the opening, the lock member 14 engages with the
corner fitment in the undercut configuration and can no longer be removed
therefrom without firstly implementing an opposite rotary movement through
90°.
The rotary handle 12 is preferably of a cylindrical configuration and at at
least one end has a male screwthread, on to which a nut can be screwed. For
fitting the rotary handle 12 accordingly one of the two nuts is unscrewed so that
the rotary handle can be passed through a hole in the central portion 10 and
the corresponding nut can then be screwed back on again. That provides that
the rotary handle 12 can be readily fitted or removed.
Figure 2 shows a perspective view of a twistlock in accordance with a
second embodiment of the invention. This twistlock is of substantially the same
design configuration as that described with reference to Figure 1 and has a
central portion 11 with two lock members 15 at the two ends of the central
portion, and a rotary handle 13. The essential difference between the twistlock
shown in the first and second embodiments lies in the configuration of the two
lock members at the end of the respective central portion 10, 11 and the length
thereof.
The lock member has an end plate 15c which in turn is substantially of
the proportions of the opening in the corner fitment. That end plate is
connected by way of a narrower limb 15b to the screwthread portion of the lock
member 15, the end plate 15c projecting in a direction towards the rotary
handle 13, that is to say towards the central portion, beyond the limb.
By virtue of rotation of the rotary handle 13, the lock members 15 can be
moved into the desired position and fitted into the corner fitments of two
adjacent transport apparatuses or containers. Then the rotary handle 13 is
moved in such a way that the two lock members move towards each other.
That results in engagement of the end plates in the corner fitment in the
undercut configuration thereof and a force-locking connection is made between
the device and the corner fitment and the associated transport apparatus.
On the outside of the lock members however there is now a gap which
substantially corresponds to the dimension of the undercutting engagement of
the end plate in the corner fitment. In order now to avoid unintentional release
of the device, there is provided at least one securing plate 17 which is
displaceable perpendicularly or radially with respect to the central portion 11 in
the direction of the limb 15, the securing plate 17 filling the opening in the
corner fitment at least to such an extent that the engagement in undercut
relationship of the end plate of the lock member cannot be at least completely
nullified without pulling out the securing plate 17 and thus unintentionally.
Figure 3 shows a side view of the twistlock from Figure 2. The lock
member 15a here has a bore 19. The central portion 11 of the device according
to the invention can be recognised through that bore 19. Suitable positioning of
that bore 19 makes it possible to ensure that the connection between the
central portion 11 and the lock member 15a is at any event adequate as long
as the central portion 11 is still to be seen or felt in the bore 19. That makes it
possible to prevent unintentional incorrect mounting by virtue of the central
portion 11 being turned excessively far out of the lock members 15a.
In accordance with an alternative embodiment of the twistlock the two
ends of the respective central portions do not have a male screwthread but
through holes are provided in the central portion at the respective ends. The
two lock members each have a respective through hole which substantially
corresponds to the through hole in the central portion. To alter the spacing
between the two lock members at the two ends of the central portion, a tommy
bar or a rod can be passed through the opening in the lock member and
through the through holes in the central portion.
In such an embodiment the rotary handle 12, 13 is not required as
adjustment of the spacing between the two lock members is not effected by
rotating the central portion.
I CLAIM :
1. A twistlock device for the connection of transport apparatuses,
comprising:
an elongate central portion (10, 11) and two lock members (14, 15) for
engagement into corner fitments of the transport apparatuses,
a rotary handle for rotating the central portion; and
a lever on each lock member;
wherein the two lock members (14, 15) respectively co-operate with the
ends of the central portion (10, 11) in such a way that the two lock members
(14, 15) are adapted to be movable along the longitudinal axis of the central
portion (10, 11);
and wherein the spacing of the lock members relative to each other is
caused to be adjusted by way of the rotary handle on the central portion so that
said spacing corresponds to the spacing of the corner fitments at the transport
apparatuses.
2. A device as claimed in claim 1 wherein the central portion (10, 11) has a
male screwthread at at least one of its ends and at least one of the two lock
members (14, 15) has a hole with a corresponding female screwthread so that
by rotating the central portion (10, 11) the male screwthread on the central
portion (10, 11) co-operates with the female screwthread of the lock member
(14, 15) and the lock member (15) is moved along the longitudinal axis of the
central portion (10, 11).
3. A device as claimed in claim 2 wherein the lever (16) is mounted
substantially radially with respect to the longitudinal axis of the central portion
(10).
4. A device as claimed in claim 1 or claim 2 comprising a securing plate
(17) on at least one of the two lock members (15), the securing plate being
displaceable substantially radially with respect to the longitudinal axis of the
central portion (11).
5. A device as claimed in any one of claims 1 to 4 wherein a bore (19) is
provided in at least one of the two lock members (14, 15).

A twistlock device for the connection of transport apparatuses is
disclosed. The device comprises: an elongate central portion (10, 11) and two
lock members (14, 15) for engagement into corner fitments of the transport
apparatuses, a rotary handle for rotating the central portion; and a lever on
each lock member; wherein the two lock members (14, 15) respectively cooperate
with the ends of the central portion (10, 11) in such a way that the two
lock members (14, 15) are adapted to be movable along the longitudinal axis of
the central portion (10, 11); and wherein the spacing of the lock members
relative to each other is caused to be adjusted by way of the rotary handle on
the central portion so that said spacing corresponds to the spacing of the
corner fitments at the transport apparatuses.

Documents:

02388-kolnp-2006 abstract.pdf

02388-kolnp-2006 assignment.pdf

02388-kolnp-2006 claims.pdf

02388-kolnp-2006 correspondence others.pdf

02388-kolnp-2006 description (complete).pdf

02388-kolnp-2006 drawings.pdf

02388-kolnp-2006 form-1.pdf

02388-kolnp-2006 form-3.pdf

02388-kolnp-2006 form-5.pdf

02388-kolnp-2006 international publication.pdf

02388-kolnp-2006 international search report.pdf

02388-kolnp-2006 others.pdf

02388-kolnp-2006 pct form.pdf

02388-kolnp-2006 priority document.pdf

02388-kolnp-2006-correspondence-1.1.pdf

02388-kolnp-2006-form-3-1.1.pdf

2388-KOLNP-2006-ABSTRACT 1.1.pdf

2388-kolnp-2006-abstract-1.2.pdf

2388-kolnp-2006-amnded claims-1.1.pdf

2388-KOLNP-2006-ANNEXURE FORM 3.pdf

2388-KOLNP-2006-CANCELLED PAGES.pdf

2388-KOLNP-2006-CLAIMS 1.1.pdf

2388-KOLNP-2006-CORRESPONDENCE 1.1.pdf

2388-KOLNP-2006-CORRESPONDENCE 1.2.pdf

2388-kolnp-2006-correspondence-1.3.pdf

2388-KOLNP-2006-DESCRIPTION (COMPLETE) 1.1.pdf

2388-kolnp-2006-description (complete)-1.2.pdf

2388-KOLNP-2006-DRAWINGS 1.1.pdf

2388-kolnp-2006-drawings-1.2.pdf

2388-kolnp-2006-examination report.pdf

2388-KOLNP-2006-FORM 1.1.1.pdf

2388-kolnp-2006-form 18.pdf

2388-kolnp-2006-form 2-1.2.pdf

2388-KOLNP-2006-FORM 2.pdf

2388-kolnp-2006-form 3-1.2.pdf

2388-KOLNP-2006-FORM 3.1.1.pdf

2388-kolnp-2006-form 5.pdf

2388-KOLNP-2006-FORM-27.pdf

2388-kolnp-2006-gpa.pdf

2388-kolnp-2006-granted-abstract.pdf

2388-kolnp-2006-granted-claims.pdf

2388-kolnp-2006-granted-description (complete).pdf

2388-kolnp-2006-granted-form 1.pdf

2388-kolnp-2006-granted-form 2.pdf

2388-kolnp-2006-granted-letter patent.pdf

2388-kolnp-2006-granted-specification.pdf

2388-KOLNP-2006-OTHERS DOCUMENTS 1.1.pdf

2388-kolnp-2006-others-1.1.pdf

2388-KOLNP-2006-OTHERS.pdf

2388-KOLNP-2006-PA.pdf

2388-KOLNP-2006-PETITION UNDER RULE 137.pdf

2388-KOLNP-2006-REPLY TO EXAMINATION REPORT 1.1.pdf

2388-kolnp-2006-reply to examination report-1.2.pdf

2388-KOLNP-2006-REPLY TO EXAMINATION REPORT.pdf

abstract-02388-kolnp-2006.jpg


Patent Number 244456
Indian Patent Application Number 2388/KOLNP/2006
PG Journal Number 50/2010
Publication Date 10-Dec-2010
Grant Date 07-Dec-2010
Date of Filing 23-Aug-2006
Name of Patentee WOBBEN ALOYS
Applicant Address ARGESTRASSE 19, 26607 AURICH GERMANY
Inventors:
# Inventor's Name Inventor's Address
1 WOBBEN ALOYS ARGESTRASSE 19, 26607 AURICH GERMANY
PCT International Classification Number B65D90/00
PCT International Application Number PCT/EP2005/002675
PCT International Filing date 2005-03-14
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 20 2004 004 054.9 2004-03-12 Germany