Tongue-groove connection

Claim 2

A tongue-groove connection which includes: a first member having an end face with a groove therein, a second member having an end face with a part thereof forming a tongue and engaging said groove, a sealing strip carried by said tongue intermediate the ends thereof and sealingly interposed between said tongue and groove, a screw means extending through a portion of said first member for connecting said first member to an under structure, said first member being at the outside thereof at the entrance to said groove provided with an abutment section, and said tongue being provided with a guiding surface for cooperation with said abutment section to aid the introduction of said tongue into said groove, the width of said groove being less than the total thickness of said tongue and sealing strip when the latter have not been introduced yet into said groove, each of said first and second members comprising a core layer of synthetic hard foam with oppositely located main surfaces and with side surfaces laterally thereof, each of said first and second members also comprising two cover layers respectively covering said main surfaces, one of the ends of said groove having an extension which includes one of said main surfaces, and one of said cover layers for the other one of said main surfaces of said first member forming the side and bottom surfaces of said groove and also covering that side of said extension which faces away from said one of said main surfaces.

Claim 3

A tongue-groove connection according to claim 1, in which that one of said main surfaces which is included by said extension is formed by one of said two cover layers of said first member.

Claim 4

A tongue-groove connection according to claim 1, in which said extension is covered on opposite sides by a portion of both cover layers of said first member.

Claim 5

A tongue-groove connection according to claim 3, in which that portion of the cover layer which is located within the region of said screw means and inwardly of the adjacent main surface of said first member is connected to the cover layer covering said groove by a bent-off cover layer section.

Claim 6

A tongue-groove connection according to claim 1, in which each of the main surfaces of said second member is covered by a cover layer, and in which one of said last mentioned two cover layers also covers said tongue, and in which the other one of said last mentioned two cover layers has an extension extending inwardly from the adjacent main surfaces and around said screw means.

Claim 7

A tongue-groove connection according to claim 1, in which said cover layers are of sheet metal.

Claim 8

A tongue-groove connection which includes in combination: a first member having an end face with a groove therein, a second member having an end face with a part thereof forming a tongue and engaging said groove, a sealing strip carried by said tongue intermediate the ends thereof and sealingly interposed between said tongue and groove, screw means extending through a portion of said first member for connecting said first member to an under structure, said first member being at the outside thereof at the entrance to said groove provided with an abutment section, and said tongue being provided with a guiding surface for cooperation with said abutment section to aid the introduction of said tongue into said groove, the width of said groove being less than the total thickness of said tongue and sealing when the latter have not been introduced yet into said groove, each of said first and second members comprising a core layer of synthetic hard foam with oppositely located main surfaces and with side surfaces laterally thereof, each of said first and second members also comprising two cover layers respectively covering said main surfaces, the tongue of said second member is covered by an extension of at least one of the cover layers covering the main surfaces of said second member, the guiding surface of said tongue comprising an inclined surface inclined away from said groove and inwardly, from that front edge of said tongue which is remote from said sealing strip, said inclined surface being continued by a section connecting the most inwardly located area of said inclined surface with the nearest area of the adjacent cover layer.

Claim 9

A tongue-groove connection which includes in combination: a first member having an end face with a groove therein, a second member having an end face with a part thereof forming a tongue and engaging said groove, a sealing strip carried by said tongue intermediate the ends thereof and sealingly interposed between said tongue and groove, screw means extending through a portion of said first member for connecting said first member to an under structure, said first member being at the outside thereof at the entrance to said groove provided with an abutment section, and said tongue being provided with a guiding surface for cooperation with said abutment section to aid the introduction of said tongue into said groove, the width of said groove being less than the total thickness of said tongue and sealing when the latter have not been introduced yet into said groove, each of said first and second members comprising a core layer of synthetic hard foam with oppositely located main surfaces and with side surfaces laterally thereof, each of said first and second members also comprising two cover layers respectively covering said main surfaces, the tongue of said second member is covered by an extension of at least one of the cover layers covering the main surfaces of said second member, the guiding surface of said tongue comprising an inclined surface inclined away from said groove and inwardly, from that front edge of said tongue which is remote from said sealing strip, said inclined surface being continued by a section connecting the most inwardly located area of said inclined surface with the nearest area of the adjacent cover layer.

Claim 10

A tongue-groove connection which includes: a first member having an end face with a groove therein, a second member having an end face with a part thereof forming a tongue and engaging said groove, a sealing strip carried by said tongue intermediate the ends thereof and sealingly interposed between said tongue and groove, screw means extending through a portion of said first member for connecting said first member to an under structure, said first member being at the outside thereof at the entrance to said groove provided with an abutment section, and said tongue being provided with a guiding surface for cooperation with said abutment section to aid the introduction of said tongue into said groove, the width of said groove being less than the total thickness of said tongue and sealing strip when the latter have not been introduced yet into said groove, each of said first and second members comprising a core layer of synthetic hard foam with oppositely located main surfaces and with side surfaces laterally thereof, each of said first and second members also comprising two cover layers respectively covering said main surfaces, each of the main surfaces of said first member being covered by a cover layer, one of said last mentioned two cover layers also covering said groove and having an extension extending to the area of said screw means, the other cover layer likewise extending into the area of said screw means, an insert of synthetic material being provided between those portions of said two cover layers which extend into the area of said screw means, and said screw means extending through said insert and the adjacent portions of said two cover layers.

Claim 11

A tongue-groove connection which includes: a first member having an end face with a groove therein, a second member having an end face with a part thereof forming a tongue and engaging said groove, a sealing strip carried by said tongue intermediate the ends thereof and sealingly interposed between said tongue and groove, screw means extending through a portion of said first member for connecting said first member to an under structure, said first member being at the outside thereof at the entrance to said groove provided with an abutment section, and said tongue being provided with a guiding surface for cooperation with said abutment section to aid the introduction of said tongue into said groove, the width of said groove being less than the total thickness of said tongue and sealing strip when the latter have not been introduced yet into said groove, each of said first and second members comprising a core layer of synthetic hard foam with oppositely located main surfaces and with side surfaces laterally thereof, each of said first and second members also comprising two cover layers respectively covering said main surfaces, each of the main surfaces of said first member being covered by a cover layer, one of said last mentioned two cover layers also covering said groove and having an extension extending to the area of said screw means, the other cover layer likewise extending into the area of said screw means, an insert of synthetic material being provided between those portions of said two cover layers which extend into the area of said screw means, and said screw means extending through said insert and the adjacent portions of said two cover layers.