Disconnectable rigid connection of mounting parts especially furniture walls

Claim 2

Fastening systsm for connecting two adjacent plate-like parts, particularly for connecting two walls of furniture, said parts being disposed perpendicularly to each other, said system comprising a cylindrical block member, said member being positioned in a first bore hold in the underside of the first one of said plate-like parts, the axis of said cylindrical block member being perpendicular to the surface of said underside of said plate-like first part, a screw member anchoring said cylindrical block member in the second one of said plate-like parts, a cylindrical stud disposed perpendicular to said axis of said cylindrical block member, said stud integrally formed with said cylindrical block member, said stud at least partly embracing said screw member and engaging a second bore hole in said second part, the diameter of said second bore hole being equal to the diameter of said stud, a laterally projecting platelike flange on one side of said cylindrical block member, said plate-like flange on one side of said cylindrical block member, said plate-like flange abutting against said surface of said underside of said plate-like first part in the area surrounding said first bore hole in said underside of said plate-like part and abutting against the surfaCe of said plate-like second part.

Claim 3

Fastening system according to claim 1, said stud having a length substantially shorter than the thickness of said second plate-like part, and said screw going through said second plate-like part, said screw having a head abutting against the outside surface of said second plate-like part, said screw engaging said stud.

Claim 4

Fastening system according to claim 1, said stud consisting of an expandable plug.

Claim 5

Fastening system according to claim 3, said stud having longitudinally extending ribs for compensating tolerances and for security against rotation.

Claim 6

Fastening system according to claim 4, said stud consisting of a hollow cylinder, longitudinal ribs on the inside of the wall of said cylinder for securing said screw member and preventing the same from dropping out before final tightening and for compensating tolerances.

Claim 7

Fastening system according to claim 3, said stud having prepared cracking areas and having a longitudinally extending bore, said bore having a reduced diameter in the center area.

Claim 8

Fastening system for connecting two adjacent plate-like parts, particularly for connecting two walls of furniture, said parts being disposed perpendicularly to each other, said system comprising a cylindrical block member, said member being positioned in a first bore hole in the underside of the first one of said plate-like parts, the axis of said cylindrical block member being perpendicular to the surface of said underside of plate-like part, a screw member anchoring said cylindrical block member in the second one of said plate-like parts, a cylindrical stud disposed perpendicular to said axis of said cylindrical block member, said stud integrally formed with said cylindrical block member, said stud at least partly embracing said screw member and engaging a second bore hole in said second part, the diameter of said second hole being equal to the diameter of said stud, a laterally projecting plate-like flange on one side of said cylindrical block member, said plate-like flange located on one side of said cylindrical block member, said plate-like flange abutting against said surface of said underside of said plate-like first part in the area surrounding said first bore hole in said underside of said plate-like part and abutting against the surface of said plate-like second part, said stud consisting of an expandable plug, said plug having a longitudinal opening, said-opening extending across said cylindrical block member.

Claim 9

Fastening system for connecting two adjacent plate-like parts, particularly for connecting two walls of furniture, said parts being disposed perpendicularly to each other, said system comprising a cylindrical block member, said member being positioned in a first bore hole in the underside of the first one of said plate-like parts, the axis of said cylindrical block member being perpendicular to the surface of said underside of plate-like part, a screw member anchoring said cylindrical block member in the second one of said plate-like parts, a cylindrical stud disposed perpendicular to said axis of said cylindrical block member, said stud integrally formed with said cylindrical block member, said stud at least partly embracing said screw member and engaging a second bore hole in said second part, the diameter of said second hole being equal to the diameter of said stud, a laterally projecting plate-like flange on one side of said cylindrical block member, said plate-like flange located on one side of said cylindrical block member, said plate-like flange abutting against said surface of said underside of said plate-like first part in the area surrounding said first bore hole in said underside of said plate-like part and abutting against the surface of said plate-like second part, said stud consisting of an expandable plug, said plug having a longitudinal opening, said-opening extending across said cylindrical block member.

Claim 10

Fastening system according to claim 3, said stud consisting of an expandable dowel having a serrated surface.

Claim 11

Fastening system according to claim 8, said stud having a cylindrical projection formed on said cylindrical block member, said cylindrical projection extending to said second plate-like part, said expandable dowel being disposed in alignment with said cylindrical projection and said screw member engaging said dowel and fixing said cylindrical member on said dowel.

Claim 12

Fastening system according to claim 1, and having two cylindrical block members, one disposed on each side of said second part, the studs of said cylindrical members being positioned in the same opening and being connected by a common screw.

Claim 13

Fastening system according to claim 1, said laterally projecting flange of said cylindrical block member having a ridge-like projection thereon, said ridge-like projection being connected to said stud, said ridge-like projection abutting against the surface of said second plate-like part and constituting reinforcing means at the point of connection of said cylindrical block member and said stud.