EP2078800B1

EP2078800B1 - Flanged shim

Info

Publication number: EP2078800B1
Application number: EP08075020.1A
Authority: EP
Inventors: Nina Nielsen
Original assignee: Nina Nielsen
Priority date: 2008-01-08
Filing date: 2008-01-08
Publication date: 2016-04-06
Anticipated expiration: 2028-01-08
Also published as: EP2078800A1

Description

This invention relates to a shim supplied with flanges for construction work particular building work such as roof construction. The flanges serve to hold and keep the shim accurately at the required position in the construction.

Background:

Shim or wedge to fill small gaps or spaces between objects has been used in construction work for a long time. Shims are typically used in order to support and adjust for better fit, or to provide a level surface. A shim has two surfaces (upper and lower surface), two sides (right and left side) and two ends (front and rear end). When one end is thinner than the other end, the shim is a wedge that has a tapered body with two triangle-shaped sides. Shim or wedge can be used singly, in pair or in pairs.
In DK141414 and EP0891495 the wedge is provided with profiles on its upper or/and lower surfaces to prevent it from sliding from each other when it is used in pair or in pairs.
In EP0127021 , EP0171545 , DE9112961U , DE8322420U and DE8808202U the shim or wedge is supplied with an inserting slot opening to one end. It is thus possible to fasten the shim or wedge at the required point on the construction with a nail, a screw or the like.
In WO2005069722 and EP0719953 the shim or wedge is further provided with teeth or barb along both of the slot's sides. It is thus possible, with the help of a nail or a screw, to position and retain the shim or wedge at a required point in the gap between two loosely connected construction parts. After correction of the orientation or level of the construction parts, the nail or screw and the shim or wedge are tightened.
The problem is, while being positioned and retained by a nail or a screw at a required point in the gap between two loosely nailed or screwed construction parts, the shim or wedge tends to rotate between the construction parts with the nail or screw as axle during driving-in and setting. In situation where a nail or screw is not applied to keep the shim or wedge at a required point, the shim or wedge can easily slide from its original position in the construction during driving-in and setting.

The invention:

In recognition of the disadvantages of the state of the art, it is an object of the invention to provide a shim that prevents itself from rotating or sliding in the construction and keeps itself accurately at the required position in the construction.
The object is achieved in the invention by providing a shim according to claim 1
When applied in construction work, a shim with said flanges and the construction part to be supported or adjusted by the shim can be regarded as a ridge-and-groove arrangement, where the construction part is ridge and the shim with flanges is groove.
The present invention will be explained in detail in the following with reference to embodiments and drawings which are:

Fig. 1 : It is a perspective view of an embodiment of said shim that is a wedge (23) with two profiled surfaces (upper surface 5 and lower surface 6), two sides (right side 3 and left side 4), two ends (front end 2 and rear end 1) where front end (2) is thinner than the rear end (1), an inserting slot (19) opening towards front end (2) and teeth along both sides of the slot (14a, 14b). The two flanges (right flange 7 and left flange 8) are located by side of shim's lower surfaces (6) and are placed on and along both sides (3, 4) of the shim. The length of flange is about 2/3 of the length of the shim body measured between the two ends of the shim. The flange is lowered from the shim body so that around half of the flange is attached to the shim body. This embodiment is made of hard plastic, and it is well known in plastic industry to have recess (20) of different sizes and shapes in a product like this to save raw materials.
Fig. 2 : It is a perspective view of an embodiment of said shim that is a rectangular shim stock (24) with two surfaces (5, 6), two sides (3, 4) and two ends (1, 2). The two flanges (7, 8) are located by side of one of the shim's two surfaces (6) and are placed on and along both sides (3, 4) of the shim. They are lowered or raised from the shim body.
Fig. 3 : It is a perspective view of an embodiment of said shim that is a rectangular shim stock (25) with two surfaces (5, 6), two sides (3, 4), two ends (1, 2) and an inserting slot (19). The two flanges (7, 8) are located by side of one of the shim's two surfaces (6) and are placed on and along both sides (3, 4) of the shim. They are lowered or raised from the shim body.
Fig. 4a -b-c-d: Figures show how the embodiment in Fig. 1 is applied in roof construction work. In traditional constructions and particularly in Scandinavian, roof rafters (22) are first covered by an underlay (21) nailed to rafters. On top of each rafter, a lath (11) is nailed to provide sufficient ventilation for the roof construction. Over the underlay and transversely across the laths, parallel spaced battens (12) are then nailed (13) for supporting roof tiles or other roof finishing materials. The battens are only loosely nailed (13) to the laths and rafters, so that it is possible to level each batten before the finishing materials such as tiles are put onto the roof.
Gaps of different sizes between battens and laths after levelling are usually filled with shims or/and wedges made of plastic, metal, stone, wood or even paper/cardboard. Shims/wedges can be used singly, in pair or in pairs. Some methods are invented to retain the shims and wedges in-between the laths and battens during levelling (for example WO2005069722 and EP0719953 ), and other methods are invented to prevent shims and wedges from sliding from each other when they are used in pair or pairs (for example DK141414 and EP0891495 ).
It happens oftenly that shims or wedges tend to rotate between laths and battens with the nail (13) as axle during driving-in and setting as illustrated in Fig. 4d. This problem is solved by the embodiment as shown in Fig. 1 and as illustrated in Fig. 4a-b-c.
The wedge (23) in Fig. 1 and Fig. 4a-b-c has two side flanges (7, 8) that are lowered or raised from the shim body (Fig. 4b). The distance between the flanges is at least equal to the width of the lath (11 in Fig. 4c). After being put onto the lath, the flanges keep the lath in-between themselves (Fig. 4c) and thus prevent the wedge (23) from rotating or sliding between laths and batens (11 and 12).
Fig. 5 : This figure is an enlarged drawing of Fig. 4a.
Fig. 6 : An embodiment of said shim that is a wedge with two profiled surfaces (5, 6), two sides (3, 4), two ends (1, 2) where one end (2) is thinner than the other (1), an inserting slot (19) and teeth on and along both sides of the slot (14a, 14b). The two flanges (7, 8) are located by side of one of the shim's two surfaces (6) and are placed on and along both sides (3, 4) of the shim. Flanges are lowered or raised from the shim body. The figure shows a plan view (middle), a side view (down), an end view (right) and an end-sectional view (left) taken on line A-B of the wedge.
Fig. 7 : An embodiment of said shim that is similar to the embodiment in Fig. 6 with the difference that there is no inserting slot in it The figure shows a plan view (middle), a side view (down), an end view (right) and an end-sectional view (left) taken on line C-D of the wedge.
Fig. 8 : The figure shows a pair of wedges in use. It is the side view of the wedge-pair illustrated in Fig. 4.
Fig. 9 : The figure shows two pairs of wedges in use. The wedges are parallelly stacked and set atop one another. Here the flanges have a further function where they act as side-lock to each other. It means that each wedge in the stack is laterally locked by its flanges atop one another and is thus prevented from lateral sliding from each other.
Fig. 10 : It is a perspective view of an embodiment of said shim where the flanges are extended outward from the shim body to achieve required distance between flanges.
Flanges are lowered or raised from the shim body and can have any size and be in any shape. They can be used singly, in pair or in plural. They can be located anywhere on the sides of the shim body. Below are some examples of variations of the flange and its position on shim:
Fig. 11 : It is a perspective view of an embodiment of said shim where the flanges are placed in the middle of the sides of the shim.
Fig. 12 : It is a perspective view of an embodiment of said shim where the flanges have the same length as the shim body and run from one end to the other end.
Fig. 13 : It is a perspective view of an embodiment of said shim where the flanges have the shape of a circle or wheel.
Fig. 14 : It is a perspective view of an embodiment of said shim where the flanges have the shape of a semi-circle or more or less of a semi-circle.
Fig. 15 : It is a perspective view of an embodiment of said shim where the flanges have the shape of a table-leg.
Fig. 16 : It is a perspective view of an embodiment of said shim that has a plurality of semi-circled flanges on both of its two sides.
Fig. 17 : It is a perspective view of an embodiment of said shim that has a plurality of triangled flanges on both of its two sides.
Fig. 18 : It is a perspective view of an embodiment of said shim that has a plurality of dotted flanges on both of its two sides.
Fig. 19 : It is an end view of the shim (23) shown in Fig. 1 and Fig. 4, and is copied from Fig. 4b and Fig. 4c. Where the width of lath (11) in Fig. 4c is equal to the distance between the flanges (7, 8), the width of lath in Fig. 19 is much smaller than the distance between the flanges. The shim (23) can become laterally unstable, and the undesired situation as illustrated in Fig. 4d can occur. In a situation like this, a method is needed to stabilize the shim.
Fig. 20-24 : The figures show the principle of the desired stabilizing method when the distance between the flanges is much bigger than the width of the construction part that the flanges hold onto. Fig. 20 shows horizontal projected teeth (15). Fig. 21 shows tilted barbs (16). They are placed on and along each of the inner sides (26) of the flanges and can be a single piece or consist of multiple pieces. They can be in row or rows, in layer or layers (17 in Fig. 22) or in other form such as semi-circle (18 in Fig. 23). Fig. 24 shows how the construction part (lath 11) is squeezed into the space between the flanges (7, 8) that is equipped with barbs (16) as shown in Fig. 21.

Claims

A shim (23, 24, 25) for filling gaps or spaces between two construction parts (11,12),
wherein the shim (23, 24, 25) has two surfaces (5, 6), two sides (3, 4) and two ends (1, 2),
wherein the shim (23, 24, 25) is provided with two opposed flanges (7, 8) beside of one of its two surfaces (5, 6),
wherein the flanges (7, 8) are placed on and along the sides (3, 4) of the shim (23, 24, 25) and
wherein the flanges (7,8) are lowered or raised totally or partly from the shim body (23, 24, 25),
characterized in that
each flange (7, 8) has at least one retaining element (15, 16, 17, 18) placed on and along the inner side (26) of each flange (7, 8) and wherein
the retaining elements (15, 16, 17, 18) are projected towards the middle or centre of the shim (23, 24, 25).
A shim according to claim 1, characterized in that the retaining elements (15, 16, 18) have the shape of a tooth (15), a barb (16), or a semi-circle (18), and preferably the retaining elements (15, 16, 18) are in row or rows, or in layer or layers.