Fire resistant door
AssigneeSchuco Heinz Schurmann GmbH & Co.
InventorsSiegfried Habicht, Heinz Gerss
Life of this patent
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Abstract
A fire resistant door has at least one swingable leaf which includes a glass plate. The swingable leaf comprises an inner frame composed of one or two tubular subframes having a general plane and a rigid outer cover frame. The outer frame has lateral walls surrounding the inner frame. The inner frame is formed with walls extending parallel to the general plane of the sub-frame, which walls together with lateral walls of the outer sub-frame form grooves. A support element is mounted in each groove which has an arresting projection whereas the lateral walls are formed with arresting webs extending towards the arresting projections and connected to the latter forming a force and form-locking connection.
Claims14
A fire-resistant door, comprising at least one swingable leaf including an inner frame comprised of two tubular steel sub-frames spaced from each other to form a space therebetween, a profile of fire and high temperature-resistant material clamped between said sub-frames;
- an outer frame of light metal surrounding said inner frame and rigidly connected thereto;
- a glass plate having a general plane and an end portion located within said frames, said outer frame having lateral walls facing said tubular sub-frames, said sub-frames having wall portions extended parallel to said general plane and spaced from said lateral walls such that anchoring grooves are formed between said lateral walls and said wall portions;
- and supporting elements each rigidly supported in the respective anchoring groove and provided with arresting projections, said lateral walls of the outer frame being formed with arresting webs extending in said grooves towards said wall portions and engaging said arresting projections of the supporting elements in a force and form-locking connection.
Dependencies are inferred from the claim text.