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US 4,637,183 AGranted
Frame for door or window opening
AssigneePolynorm N.V.
InventorLaurens Metz
Life of this patent
Estimating the term…
Abstract
A frame having a U-shaped cross-section is clamped at a wall rim bounding an opening in a wall by means of a clamping jaws. The clamping jaws are formed by a steel sheet bent over in its longitudinal direction and are profiled substantially throughout their lengths, so that with a small thickness of material the clamping jaws mainly derive their rigidity from their profile.
Claims8
A frame comprising:
- a steel frame element having a substantially u-shaped cross-section, a first opening means, at least one other opening means and two flanged rim means for clamping a wall in between the flanged rim means;
- at least one clamping device having steel clamping jaws positioned within said frame element, one of said jaws being provided with a paumelle fastening means;
- clamping means for connecting said clamping jaws;
- said clamping jaws having a substantially ridge and gutter shaped profile along the longitudinal direction of the clamping jaws, said clamping jaws engaging said flanged rim means;
- at least one paumelle having a wing portion thereon which is provided with a paumelle fastening means, along said wing portion, for attaching said wing with one of said clamping jaws, said wing being engaged with said clamping jaws through said first opening means, said wing shaped so as to securely fit within the ridge and gutter shape of said clamping jaw;
- and
- a single screw bolt means being passed through said other opening means, for attaching said wing to one of said clamping jaws.
4 more elements
Dependencies are inferred from the claim text.