Patent Description:
Prior art shelves are typically standing on a floor or are attached to a wall. A shelf standing on the floor takes space from the floor and once it has been assembled or brought into place, it can no longer be hidden anywhere if the floor space is to be used for something else. A shelf attached to the wall have the same kind of tendency of being permanent solution as the standing shelf. The shelf once connected to the wall leaves screw holes behind when it is removed.

The document <CIT> discloses an electric, multi-lamp hanging lamp, consisting of a tubular mounting part as a supporting part for the lamp sockets held on laterally projecting lamp arms. <CIT> discloses a shelf known in the art.

In cities people have small homes which means that there is not much space for large furniture such as shelves. Floors are already covered with essential furniture such as tables, chairs, sofas and beds. Windows take up free space at the walls together with mirrors, paintings, pictures and closets, so there may not be enough room for shelves.

An object of the present invention is to provide a shelf such that the prior art disadvantages may be solved or at least alleviated.

The objects of the invention are achieved by a shelf which is characterized by what is stated in the independent claim. The preferred embodiments of the invention are disclosed in the dependent claims.

The invention is based on the idea of providing a shelf that is removably coupled to a ceiling and more preferably a shelf that is removably coupled to a hook protruding from the ceiling.

According to the invention a shelf comprises a rigid arm structure, a support element comprising one or more support surfaces to be arranged against a ceiling, a shelf platform connected to the rigid arm structure and extending transverse relative to the rigid arm structure and a securing arrangement for securing the shelf to the ceiling. The rigid arm structure has a distal end and the support element is provided at the distal end of the rigid arm structure. The shelf platform is connected to the rigid arm structure at a first distance from the distal end of the rigid arm structure. The securing arrangement comprising a securing surface arranged in connection with the rigid arm structure at a second distance from the one or more support surfaces and a securing mechanism arranged to secure the support element via the securing surface to the ceiling.

The distal end of the rigid arm structure is that end of the rigid arm structure which is closest to the ceiling when the shelf is connected to the ceiling. Opposite to the distal end is a proximal end which is that end of the rigid arm structure which is closest to a floor when the shelf is connected to the ceiling. The rigid arm structure therefore comprises a distal end and a proximal end such that the rigid arm structure is arranged to extend between the distal end and the proximal end. The rigid arm structure is set in a vertical or substantially vertical orientation when the shelf is connected to the ceiling. Alternatively, or in addition, a longitudinal axis of the rigid arm structure is set in a vertical or substantially vertical orientation when the shelf is connected to the ceiling.

According to the invention the securing arrangement further comprises a securing plate having the securing surface on one side of the securing plate. The securing plate is connected to the rigid arm structure.

The securing plate is preferably but not necessary a planar plate having the securing surface as a planar surface. However, the securing plate may also be in another form than a plate and the securing surface need not to be planar either. The securing plate is connected to the rigid arm structure such that the shelf can be fastened to the ceiling by tightening the securing mechanism via the securing surface. The securing surface may not necessarily cover all of the side of the securing plate, but for example the securing surface may only be a recess in the securing plate.

The securing mechanism has a portion which is can be fastened to the ceiling or to a hook or similar counter-portion extending from the ceiling and another portion which can be fastened toward the securing surface. Therefore, the securing mechanism may comprise multiple portions which can be separated from each other, such as a nut and a rod, and/or portions which can be integral, such as a rod and a loop connected to the rod.

According to the invention the rigid arm structure comprises only two arm portions having an outer arm surface and an inner arm surface. The two arm portions are arranged opposite to each other such that the inner wall surfaces are at least partly facing toward each other. The securing plate is connected to the inner wall surfaces of said two arm portions such that the securing plate is extending between the opposite arm portions.

The rigid arm structure comprising only two arm portions may be for example such that they are facing toward each other.

The two arm portions can be connected together through the securing plate. In addition, the two arm portions can additionally be connected together through the shelf platform.

According to a preferred embodiment of the invention the distal end of the rigid arm structure having an end face which is arranged to form the support element provided at the distal end of the rigid arm structure such that the end face being the one or more support surfaces to be arranged against the ceiling.

The end face of the rigid arm structure is formed of the ends of the at least two arm portions or of the ends of at least two of the arm portions such that the ends of the at least two arm portions define a support plane formed therebetween. The support plane may be an imaginary support plane such that the ends of the arm portions are provided on opposite sides of a rod which is extending within the rigid arms structure from the securing surface towards the distal ed of the rigid arm structure define the boundaries for the imaginary support plane and the imaginary planar is formed between the ends.

The support element forms a support plane which extends around a fixing point at the ceiling to which the securing mechanism is to be connected for connecting the shelf to the ceiling. The support plane may be an imaginary support plane such that the support element only forms the boundaries for the imaginary support plane, or the support element may form the real support plane.

According to a preferred embodiment of the invention the shelf further comprises a connecting part arranged at the distal end of the rigid arm structure, the connecting part forming the support element to be arranged against the ceiling. The support element formed by the connecting part is arranged to form a support around the attachment point between the ceiling and the shelf to which the securing mechanism is connected.

In other words, the connecting part forms the support element which in other preferred embodiments of the invention is formed by the end face of the rigid arm structure. The connecting part may be a separate part or a combined part with the securing plate.

According to a preferred embodiment of the invention the securing plate is arranged at the distal end of the rigid arm structure such that the securing plate is provided with the support element to be arranged against the ceiling. The support element is provided at the opposite side of the securing plate relative to the securing surface. In other words, the securing plate is combined with a connecting plate, i.e. the securing plate is the connecting plate, such that on one side of the securing plate is the securing surface and on the other opposite side of the securing plate is the support element.

According to a preferred embodiment of the invention the securing mechanism is arranged to extend from the side of the securing surface of the securing plate through the securing plate towards the distal end of the rigid arm structure.

The securing mechanism is preferably a draw bar having threads for a nut to be secured to the draw bar or a flexible wire cable rod having a clamping mechanism for tightening the cable rod between the hook protruding from the ceiling and the securing surface. The securing mechanism is arranged to be tightened between a connector protruding from the ceiling and the securing surface such that the support element presses against the ceiling.

According to a preferred embodiment of the invention the securing arrangement further comprising an aperture extending through the securing plate for the securing mechanism to extend through the securing plate via the aperture from the securing surface towards the distal end of the rigid arm structure.

The securing mechanism preferably comprises a rod portion which the rod portion is arranged to be provided through the aperture at the securing plate such that one part of the rod portion is provided at the securing surface side of the securing plate and another part of the rod portion is provided at the side of the securing plate towards the distal end of the rigid arm structure. The part of the rod portion provided at the securing surface side of the securing plate is secured toward the securing surface with a nut or other securing element.

According to a preferred embodiment of the invention the rigid arm structure having a proximal end opposite to the distal end, the shelf platform is connected to the rigid arm structure at the proximal end.

The shelf platform may be connected to the rigid arm structure for example such that the rigid arms structure extends through the shelf platform or the shelf platform may have a lock mechanism such as a snap lock mechanism for the rigid arm structure.

According to a preferred embodiment of the invention the shelf further comprises a secondary shelf platform connected to the rigid arm structure between the distal end of the rigid arm structure and the shelf platform.

The shelf platform or the secondary shelf platform may be of any shape but preferably rectangular, square or round.

According to a preferred embodiment of the invention the securing mechanism is a screw or a screw hook which is tightened with a nut.

The securing mechanism is such that it is connectable from one point of the securing mechanism to a hook extending from the ceiling and securable from another point of the securing mechanism to the securing surface of the securing plate. Alternatively, or in addition, the securing mechanism is such that it is connectable from one point of the securing mechanism to the ceiling and securable from another point of the securing mechanism to the securing surface of the securing plate. The securing mechanism may then comprise multiple elements connected or connectable to each other, such as a screw with a nut and a hook. The nut can be replaced with any other suitable securing means. The one point of the securing mechanism which is connectable to a hook or to a ceiling or a connecting element may be the end of the securing mechanism. Alternatively, or in addition the another point securable to the securing surface may be an end of the securing mechanism or any other point along the securing mechanism.

According to a preferred embodiment of the invention length of the rigid arm structure is extendable in a direction between the distal end and the shelf platform.

The rigid arm structure may then be provided from multiple portions which for example telescope. Alternatively, or in addition the rigid arm structure may be provided as a pivoted arm structure. Alternatively, or in addition the rigid arm structure may a telescopic arm structure or provided with multiple parts that are forming a nested structure.

According to a preferred embodiment of the invention the shelf platform comprising at least one light source provided to the shelf platform such that the at least one light source illuminating in a direction away from the shelf platform.

The at least one light source can be arranged to illuminate from an under surface of the shelf platform in a direction away from the shelf platform, or alternatively or in addition the at least one light source can be arranged to illuminate from the shelf platform towards the distal end of the rigid arm structure. Any other direction for illuminating is also possible.

According to a preferred embodiment of the invention the shelf platform comprising shelf edges defining a shelf surface extending transverse relative to the rigid arm structure; and the rigid arm structure and the shelf platform are connected such that the rigid arm structure is located at a distance from the shelf edges. Alternatively, the rigid arm structure and the shelf platform are connected such that the rigid arm structure is located symmetrically relative to the shelf edges.

The shelf platform may comprise a socket to provide electrical power for an electrical device. Alternatively, or in addition the shelf platform may comprise a loudspeaker embedded or at least partly embedded to the shelf platform. Alternatively, or in addition the shelf platform may comprise a charging pad or a charging dock embedded or at least partly embedded to the shelf platform. Alternatively, or in addition the shelf platform may comprise at least one USB connection in the shelf platform.

According to a preferred embodiment of the invention the shelf platform is connected to the rigid arm structure with a releasable connection. Alternatively, the shelf platform is connected to the rigid arm structure with a fast coupling.

According to a preferred embodiment of the invention the securing plate is arranged at a third distance from the distal end of the rigid arm structure such that a space is provided between the securing plate and the ceiling or between the securing plate and the connecting part when the support element is arranged against a ceiling.

According to a preferred embodiment of the invention the length of the rigid arm structure is greater than the length of the support surface provided against the ceiling.

According to a preferred embodiment of the invention the support element may comprise one or more portions. For example, the support element can be formed by a plurality of point-like support surfaces provided against the ceiling, which are at least partially connected to each other.

An advantage of the invention is that the shelf according to the invention is connectable to the ceiling such that the shelf is stable without being permanently connected to the ceiling. Another advantage of the shelf according to the invention is that the shelf can quickly and easily be removed from the ceiling without leaving any marks to the ceiling.

The invention is described in detail by means of specific embodiments with reference to the enclosed drawings, in which.

<FIG> shows one embodiment of a shelf according to the invention in which the rigid arm structure <NUM> comprising a distal end <NUM> and a proximal end <NUM> is already connected with the shelf platform <NUM>. The shelf platform <NUM> is connected to the proximal end of the rigid arm structure <NUM>. The connection between the rigid arm structure <NUM> and the shelf platform <NUM> is preferably releasable such that the shelf <NUM> parts are removable from each other so that the shelf can be packed in a small space when the shelf is not used. The connection between the shelf platform <NUM> and the rigid arm structure <NUM> can be for example a snap lock connection or other fast coupling. In the embodiment shown in <FIG> the rigid arm structure <NUM> comprises two arm portions <NUM>, <NUM>. The arm portions <NUM>, <NUM> are arranged to form the rigid arm structure <NUM> such that the inner arm surfaces 23b, 24b are facing at least partly each other and a securing plate <NUM> is connected to the inner surfaces 23b, 24b of the arm portions <NUM>, <NUM>. The securing mechanism <NUM> is arranged through the securing plate <NUM> such that a tightening mechanism, i.e. a nut or like, is tightened toward the securing surface <NUM> of the securing plate <NUM>. The securing mechanism <NUM> is a rod-like part which preferably comprises threading and a hook or a loop on that end of the securing mechanism <NUM> which is provided towards the distal end <NUM> of the rigid arm structure <NUM>. The securing mechanism <NUM> can comprise a flexible portion or the securing mechanism <NUM> can be a flexible rod or a rigid rod. The distal end of the securing mechanism <NUM> provided towards the distal end of the rigid arm structure <NUM> preferably comprises a connector such as a hook or a loop which is connectable to a roof hook protruding from the ceiling <NUM> or a lamp hook 10b provided to a lamp socket cover 10a provided with the hook. The rigid arm structure <NUM> comprises end faces <NUM> at the distal end <NUM> of the rigid arm structure <NUM>. The end faces <NUM> form the support element <NUM> to be arranged against the ceiling <NUM>.

<FIG> shows the shelf shown in <FIG> as seen from top. The shelf plate <NUM> is arranged such that a shelf surface <NUM> is arranged transverse relative to the longitudinal direction of the rigid arm structure <NUM>. In other words, the shelf surface <NUM> is preferably parallel to the end face <NUM> of the rigid arm structure which the end face <NUM> is forming the support element of the shelf <NUM> to be arranged against the ceiling <NUM>. The shelf platform <NUM> extends from the rigid arm structure <NUM> such that the shelf surface <NUM> extends transversally from the rigid arm structure <NUM> in all directions around the arm structure <NUM>.

<FIG> also shows that the securing plate <NUM> is provided in connection with the rigid arm structure <NUM> such that the securing plate <NUM> extends between the inner arm surfaces 23b, 24b of the opposing arm portions <NUM>, <NUM>. The securing plate <NUM> comprises an aperture <NUM> extending through the securing plate <NUM> for the securing mechanism <NUM> to extend through the securing plate <NUM> via the aperture <NUM> from the securing surface <NUM> towards the distal end of the rigid arm structure <NUM>. The rigid arm structure <NUM> comprises two separate arm portions <NUM>, <NUM> as shown in <FIG> which the arm portions <NUM>, <NUM> are connected together with the securing plate <NUM> extending between the arm portions <NUM>, <NUM> and connected to them.

<FIG> shows the shelf shown in <FIG> as connected to a ceiling. The end faces <NUM> of the rigid arm portions <NUM>, <NUM> which the end faces <NUM> form the support element <NUM> of the rigid arm structure <NUM> are placed against the ceiling <NUM>. The support element <NUM> is provided against the ceiling such that the connection point between the rod part <NUM> of the securing mechanism <NUM> and the hook <NUM> protruding from the ceiling <NUM> is within an area defined by the support element <NUM>, in particular within the area defined by the end surfaces <NUM> of the rigid arm structure <NUM>. In other words, the end faces <NUM>, i.e. the support element <NUM> of the rigid arm structure <NUM> provide a perimeter having a space within the perimeter with no connection to the ceiling <NUM>. In other words, the support element <NUM> forming a connection with the ceiling <NUM> delimits the space in which the connection between the ceiling and the shelf <NUM> is established through the securing arrangement <NUM> and especially with the securing mechanism <NUM> having the rod portion connecting a hook <NUM> provided at the ceiling <NUM>. The shelf <NUM> is fastened to the ceiling <NUM> through the securing surface <NUM> so that the securing mechanism <NUM> is tightly tightened between the hook <NUM> protruding from the ceiling <NUM> and the securing surface <NUM> while the support element <NUM> of the rigid arm structure <NUM> provides countersurface for the securing surface <NUM>.

When connecting the shelf <NUM> to the ceiling <NUM>, the securing mechanism <NUM>, which is arranged through an aperture in the securing plate <NUM>, is tightened between a connector protruding from the ceiling <NUM> and the securing surface <NUM> such that the support element <NUM> presses against the ceiling <NUM>. The securing mechanism <NUM> comprises a clamping element pressing against the securing surface <NUM>.

<FIG> shows an example of a shelf not according to the invention in which the rigid arm structure <NUM> has a tubular shell portion <NUM> having an outer shell surface 25a and an inner shell surface 25b. In other words, the tubular shell portion <NUM> is a tube-like part having an end face forming the support element <NUM> which in the <FIG> is placed against the ceiling <NUM>. The tubular shell portion <NUM> comprises an interior space defined by the inner shell surface 25b. In other words, the rigid arm structure <NUM> is hollow inside. The securing plate <NUM> is connected to the inner shell surface 25b such that the securing surface <NUM> is transverse relative to the inner shell surface 25b. The securing plate <NUM> can be provided within the rigid arm structure <NUM> such that it covers only partly the cross-sectional area of the rigid arm structure <NUM> defined by the inner shell surface or the securing plate <NUM> may be connected to the inner shell surface 25b from all over the securing plate <NUM> such that the securing plate <NUM> divides the tubular shell portion <NUM> into two hollow space portions. In the embodiment shown in <FIG> the tubular shell portion <NUM> comprises an opening from outside of the rigid arm structure to inside of the tubular shell portion <NUM> such that the securing mechanism <NUM> in the securing arrangement <NUM> can be tightened.

<FIG> also shows an example of the shelf not according to the invention in which the shelf platform <NUM> comprises light sources <NUM> provided to the shelf platform <NUM> such that the light sources <NUM> are arranged to illuminate in a direction away from the distal end <NUM> of the rigid arm structure. In other words, the light sources <NUM> are arranged to an underside of the shelf platform <NUM> which the underside is the opposite surface of the shelf platform relative to the shelf surface <NUM>.

<FIG> also shows an example of the shelf not according to the invention in which the shelf <NUM> comprises an additional shelf platform <NUM>. The additional shelf platform <NUM> is a secondary shelf platform <NUM> connected to the rigid arm structure <NUM> between the distal end <NUM> of the rigid arm structure <NUM> and the shelf platform <NUM>. The shelf <NUM> may comprise multiple secondary shelf platforms <NUM>.

<FIG> shows the shelf <NUM> shown in <FIG> as seen from top in which the tubular form of the rigid arm structure <NUM> can be seen. The <FIG> also shows the shelf platform <NUM> and the secondary shelf platform <NUM>. As can be seen, the shelf platform and the secondary shelf platform <NUM>, <NUM> need not to be the same size nor the same form. In the example shown in <FIG> the shelf platform <NUM> is in a round form and the secondary shelf platform <NUM> is rectangular. Both platforms <NUM>, <NUM> are connected to the rigid arm structure <NUM> such that the shelf surfaces <NUM>, <NUM> of the shelf platforms <NUM>, <NUM> extend transverse to the rigid arm structure <NUM> but parallel or substantially parallel to the support element <NUM> of the rigid arm structure <NUM> formed by the end face <NUM> of the tubular shell portion <NUM>. The shelf platforms <NUM>, <NUM> extend around the rigid arm structure <NUM> and preferably such that the rigid arm structure <NUM> is symmetrically positioned relative to the shelf platforms <NUM>, <NUM>. The securing plate <NUM> is provided within the tubular shell portion <NUM> such that the securing surface is transverse relative to the inner shell surface 25b. The securing plate <NUM> comprises an aperture <NUM> for the securing mechanism to be provided through the securing plate <NUM> via the aperture <NUM>.

<FIG> shows still another embodiment of a shelf according to the invention in which the shelf <NUM> further comprises a connecting part <NUM> arranged at the distal end <NUM> of the rigid arm structure <NUM>. The connecting part <NUM> forms the support element <NUM> to be arranged against the ceiling <NUM>. The ceiling <NUM> comprises in this embodiment a base for a protruding hook <NUM> and the connecting part <NUM> comprises an opening such that the hook <NUM> can be provided through connecting part <NUM> such that the connecting part <NUM> surrounds the hook while placed against the ceiling <NUM>. The base for the hook <NUM> is for example a ceiling cover for a socket outlet together with a hook for a pendant light. As the ceiling <NUM> comprises the base for the hook <NUM> which the base is protruding from the rest of the ceiling <NUM> the connecting part <NUM> is placed such that the support element <NUM> rests against the base in the ceiling <NUM>. The securing plate <NUM> is provided at a distance away from the connecting part <NUM> such that a connecting space is formed between the connecting part <NUM> and the securing plate <NUM> and between the two arm portions <NUM>, <NUM>. The securing mechanism <NUM> arranged in connection with the securing plate <NUM> extends from the securing surface <NUM> to the connecting space in which the securing mechanism <NUM> is connected to the hook <NUM> protruding from the ceiling <NUM>. The securing mechanism <NUM> is then tightened such that the support element <NUM> presses against the ceiling <NUM>.

<FIG> shows an example of a shelf <NUM> not according to the invention in which the rigid arm structure <NUM> comprises two arm portions <NUM>, <NUM> having the inner arm surfaces 23b, 24b facing toward each other. The connecting part <NUM> forms the support element <NUM> to be arranged against the ceiling <NUM> similarly as shown in <FIG> and the hook 10b extending from the ceiling <NUM> through a lamp socket cover 10a is provided through an aperture in the connecting element <NUM>. The connecting element <NUM> therefore forms the support element <NUM> comprising one or more support surfaces <NUM> to be arranged against the ceiling <NUM> as the lamp socket cover 10a forms part of the ceiling <NUM>. The shelf platform <NUM> is connected to the rigid arm structure <NUM> at the proximal end of the rigid arm structure <NUM> and extending transverse relative to the rigid arm structure <NUM>. The securing arrangement <NUM> comprises in this embodiment of the invention the securing surface <NUM> provided at the underside of the shelf platform <NUM>, i.e. at the side of the shelf platform <NUM> which is facing towards away from the distal end of the rigid arm structure <NUM>. In other words, the shelf platform <NUM> is arranged to form the securing surface <NUM> for the securing mechanism <NUM> which is arranged to secure the support element <NUM> formed by the connecting element <NUM> via the securing surface <NUM> to the ceiling <NUM>. Therefore, the securing mechanism <NUM> is arranged to go through the shelf platform <NUM> such that a rod portion of the securing mechanism is extending through an aperture provided at the shelf platform and a nut of the securing mechanism is arranged to be secured towards the securing surface <NUM>. In this example of the shelf the end of the securing mechanism <NUM> which is facing the ceiling <NUM> comprises a hook portion which is provided to the lamp hook 10b.

<FIG> shows yet another example of a shelf <NUM> not according to the invention. In this example the securing plate <NUM> is arranged at the distal end <NUM> of the rigid arm structure <NUM> such that the end faces <NUM> of the arm portions <NUM>, <NUM> are placed against the securing plate <NUM>. Alternatively, the securing plate <NUM> can be placed between the arm portions <NUM>, <NUM> at the distal end <NUM> of the rigid arm structure <NUM> such that the securing plate <NUM> extends between the inner arm surfaces 23b, 24b. The securing plate <NUM> comprises the securing surface <NUM> on one side of the securing plate <NUM> and the support element <NUM> on the opposite side of the securing plate <NUM>. In other words, while the support element <NUM> is placed against the ceiling the securing surface <NUM> faces on the opposite direction towards the shelf platform <NUM>. The securing plate <NUM> is in this embodiment connected with the securing mechanism <NUM> directly to the ceiling <NUM>.

<FIG> shows another example of a shelf shown in <FIG> with the difference that the two arm portions <NUM>, <NUM> facing each other are rod-like arm portions which are arranged to go through the shelf platform <NUM> and secured to the shelf platform on the underside of the shelf platform <NUM>. The underside of the shelf platform <NUM> is the side of the shelf platform which is facing away from the ceiling <NUM> when the shelf is connected to the ceiling <NUM>. The same kind of securing of the arm portions <NUM>, <NUM> to the shelf platform <NUM> is also possible for such arm portions which have a protruding pin or rod at the end of the arm portion which the protruding pin or rod is arranged to go through the shelf platform having a hole for it.

Claim 1:
A shelf (<NUM>), comprising:
- a rigid arm structure (<NUM>) having a distal end (<NUM>);
- a support element (<NUM>) comprising one or more support surfaces (<NUM>) to be arranged against a ceiling (<NUM>), said support element (<NUM>) is provided at the distal end (<NUM>) of the rigid arm structure (<NUM>);
- a shelf platform (<NUM>) connected to the rigid arm structure (<NUM>) at a first distance from the distal end (<NUM>) of the rigid arm structure (<NUM>) and extending transverse relative to the rigid arm structure (<NUM>); and
- a securing arrangement (<NUM>) for securing the shelf (<NUM>) to the ceiling (<NUM>), the securing arrangement (<NUM>) comprising:
- a securing surface (<NUM>) arranged in connection with the rigid arm structure (<NUM>) at a second distance from the one or more support surfaces (<NUM>);
- a securing mechanism (<NUM>) arranged to secure the support element (<NUM>) via the securing surface (<NUM>) to the ceiling (<NUM>); and
- a securing plate (<NUM>) having the securing surface (<NUM>) on one side of the securing plate (<NUM>), said securing plate (<NUM>) being connected to the rigid arm structure (<NUM>), characterised in that the rigid arm structure (<NUM>) comprises only two arm portions (<NUM>, <NUM>) having an outer arm surface (23a, 24a) and an inner arm surface (23b, 24b), the two arm portions (<NUM>, <NUM>) are arranged opposite to each other such that the inner wall surfaces (23b, 24b) are at least partly facing toward each other, the securing plate (<NUM>) is connected to the inner wall surfaces (23b, 24b) of said two arm portions (<NUM>, <NUM>) such that the securing plate (<NUM>) is extending between the opposite arm portions (<NUM>, <NUM>).