Element of fastening accessories to metal windows and doors

Expanded – threaded – driven – headed – tool-deformed – or locked-thr – Threaded fastener locked to a discreet structure – Nut – and means to engage substructure on its opposite faces...

Reexamination Certificate

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Details

C411S080600, C411S058000, C052S704000

Reexamination Certificate

active

07147419

ABSTRACT:
An element for fastening accessories to metal window and door frames includes a monolithic metal body with a cylindrical central portion having a threaded inner hole. An insertion portion has a cone frustum shape with decreasing diameter from the diameter of the cylindrical central portion towards one end. A stop portion includes a circumferential throat delimited by a shoulder whose outer diameter is greater than the diameter of the cylindrical central portion. The outer diameter of the shoulder is joined to the cylindrical central section by a cone frustum shaped segment. A first series of through longitudinal grooves extends on a part of the length of the cylindrical central portion and on the insertion portion and defines a first section deformable radially inwardly relative to a non-deformed resting configuration. A second series of through longitudinal grooves extends on a part of the length of the cylindrical central portion and on the stop portion and forms a second section deformable elastically inwardly relative to the non-deformed configuration.

REFERENCES:
patent: 2379786 (1945-07-01), Bugg et al.
patent: 3611861 (1971-10-01), Schulze
patent: 3874264 (1975-04-01), Polos
patent: 4358234 (1982-11-01), Takegawa et al.
patent: 4708551 (1987-11-01), Richter et al.
patent: 2002/0127081 (2002-09-01), Filipp
patent: 196 07 029 (1997-08-01), None
patent: 199 62 955 (2001-07-01), None
patent: 1 223 274 (2002-07-01), None
patent: 417651 (1934-10-01), None
Copy of European Search Report for EP 05 01 3226.

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