Butt joint

Claim 2

A butt joint comprising: a first hollow profile member having an interior surface, and exterior surface an a projecting first stop, said first stop comprising a first web and a groove-bounding web; a second hollow profile member being connected to said first hollow profile member to form an inside corner, said second profile member having a interior surface, an exterior surface and a projecting second stop, said second stop comprising a first web and a groove-bounding web; and a reinforcement part being disposed adjacent to said inside corner, said reinforcement part being elastically deformable and being supported by said first stop and said second stop such that said reinforcement part is disposed solely on the interior surface of the first hollow profile member and the interior surface of the second hollow profile member.

Claim 3

The butt joint of claim 1, wherein said reinforcement part is thinner than said webs of said hollow profile members, and wherein said reinforcement parts are elastically deformable.

Claim 4

The butt joint of claim 1, wherein said reinforcement parts have an angled base body, such that the enclosed angle is slightly greater than 90 degrees.

Claim 5

The butt joint of claim 3, wherein said reinforcement parts have angled spring tabs at one face end, and spring tabs at the other face end, such that the angle between the surfaces of the angled base body and the tabs is an obtuse angle, said spring tabs grip behind said groove-bounding web behind said first web.

Claim 6

The butt joint of claim 4, wherein said webs, are displaced relative to an insulating web, said insulating web determines the depth of a profile fold, said displacement being in the direction toward the other web, such that said displacement corresponds to the thickness of the webs of the hollow profile members.

Claim 7

The butt joint of claim 1, wherein said second hollow profile member is connected to said first hollow profile member, in the form a T-joint, said reinforcement parts have a base body having an angled cross section, such that a middle area of said base body has a constriction which grips over the webs and which forms a groove for receiving a seal.

Claim 8

The butt joint of claim 1, wherein said reinforcement part has at least one hole for injecting a sealing compound into a joint area between said first hollow profile member and said second hollow profile member.

Claim 9

A butt joint comprising: a first hollow profile member having an interior surface, an exterior surface and a projecting first stop, said first stop comprising a first web and a groove-bounding web; a second hollow profile member being connected to said first hollow profile member to form an outside corner, said second profile member having an interior surface, an exterior surface and a projecting second stop, said second stop comprising a first web and a groove-bounding web; and a reinforcement part being disposed adjacent to said outside corner, said reinforcement part being elastically deformable and being supported by said first stop and said second stop, such that said reinforcement part is disposed solely on the exterior surface of the first hollow profile member and the exterior surface of the second hollow profile member.

Claim 10

A butt joint comprising: a first hollow profile member having an interior surface, an exterior surface and a projecting first stop, said first stop comprising a first web and a groove-bounding web; a second hollow profile member being connected to said first hollow profile member to form an outside corner, said second profile member having an interior surface, an exterior surface and a projecting second stop, said second stop comprising a first web and a groove-bounding web; and a reinforcement part being disposed adjacent to said outside corner, said reinforcement part being elastically deformable and being supported by said first stop and said second stop, such that said reinforcement part is disposed solely on the exterior surface of the first hollow profile member and the exterior surface of the second hollow profile member.

Claim 11

The butt joint of claim 8, wherein said reinforcement part is thinner than said webs of said hollow profile members, and wherein said reinforcement parts are elastically deformable.

Claim 12

The butt joint of claim 8, wherein said reinforcement parts have an angled base body, such that the enclosed angle is slightly greater than 90 degrees.

Claim 13

The butt joint of claim 10, wherein said reinforcement parts have angled spring tabs at one face end, and spring tabs at the other face end, such that the angle between the surfaces of the angled base body and the tabs is an obtuse angle, said spring tabs grip behind said groove-bounding web behind said first web.

Claim 14

The butt joint of claim 11, wherein said webs, are displaced relative to an insulating web, said insulating web determines the depth of a profile fold, said displacement being in the direction toward the other web, such that said displacement corresponds to the thickness of the webs of the hollow profile members.

Claim 15

The butt joint of claim 8, wherein said reinforcement part has at least one hole for injecting a sealing compound into a joint area between said first hollow profile member and said second hollow profile member.