Seal

DETAILED DESCRIPTION OF THE INVENTION The solution of the invention is particularly applicable for sealing a door or a hatch of a protective construction of a base station without restricting thereto.
Here the door refers to doors, hatches, covers or windows that can be opened.
Let us first take a look at prior art solutions shown in FIGS.
1a-2b.
In FIG.
1a the branches of a lip seal 102 forming a v-shaped cross section are spread out.
The lip seal 102 is fastened to a frame 100 having an indentation for a door.
In FIG.
1b a door 104 is closed and the door 104 presses the lip seal 102 against the frame 100 thus narrowing the v-shaped opening of the lip seal 102.
In FIG.
2a a hollow, tubular seal 202 is fastened to the frame 100.
The function of the hollow seal is based on the fact that the hollow seal is compressed when the door 104 is closed as shown in FIG.
3b.
Let us now examine the seal of the invention in greater detail.
The seal is made of elastic material as in prior art solutions and it is as easy to manufacture as prior art seals.
Technical rubber, silicone, EPMD (Ethylene Propylene Diene Monomer) and many elastic plastics can function as the elastic materials.
According to FIG.
3a a seal 300 comprises a first sealing portion 302, a fastening portion 304 by which the seal is fastened to the frame 100 and a second sealing portion 306.
The second sealing portion 306 is a lip seal in this example, but it can also be any prior art seal like a hollow seal.
In this example, the door 104 comprises a hinge 106, an edge 110, an outer surface 112 and an inner surface 114.
The edge 110 refers to the side of the door 104 that opens in contrast to the hinged side.
Although the edge 110 is separated from the rest of the door by hatching it, the edge 110 need not be structurally different from the rest of the door material.
The outer surface 112 of the door 104 is in this example the side, in which direction the door opens.
The inner surface 114 is the opposite side of the outer surface 112.
In FIG