Frame for doors, windows and the like

Claim 2

A frame element comprising in combination: a hollow metal profile; a synthetic resin coat on the outer surface of said hollow metal profile and having both a densified outer skin facing outwardly away from said hollow metal profile and a foamed portion having an expanded and cellular texture under said outer skin; and means for bonding said hollow metal profile to said synthetic resin coat and for transmitting shearing load between the same.

Claim 3

The frame element of claim 1, said bonding means comprises a densified inner skin of synthetic resin intermediate and bonded to both the foamed portion of said synthetic resin coat and to the outer surface of said hollow metal profile.

Claim 4

The frame element of claim 1, said outer surface having roughenings constituting said means for bonding.

Claim 5

The frame element of claim 1, said means comprising small transverse grooves and ribs on the outer surface of said hollow metal profile.

Claim 6

The frame element of claim 1, said means comprising small bores on the outer surface of said hollow metal profile.

Claim 7

The frame element of claim 1, the cross-sectional configuration of said hollow metal profile corresponding at least approximately to that of said synthetic resin coat.

Claim 8

The frame element of claim 6, said synthetic resin coat having at least one elongated closure ledge extending along the length of said synthetic resin coat and being of greater thickness than the remainder of said synthetic resin coat.

Claim 9

The frame element of claim 7, said closure ledge being provided with an integral closure ridge projecting therefrom and extending along the length thereof.

Claim 10

The frame element of claim 1, said hollow metal profile having at least one rib extending transversely inwardly from the inner surface thereof, whereby bending resistance of said hollow profile is increased.

Claim 11

The frame element of claim 1, said synthetic resin coat including two projecting ribs at an edge portion thereof, said hollow metal profile having no corresponding ribs, whereby a clipping strip for a pane is anchored to said synthetic resin coat of the frame element.

Claim 12

The frame element of claim 1, said synthetic resin coat having two diametrically opposite, longitudinally extending edges which are relatively thicker than the rest of said synthetic resin coat, said hollow metal profile having two hollow, longitudinally extending ribs at portions of said hollow metal profile which correspond to the two edges of said synthetic resin coat.

Claim 13

The frame element of claim 2, the foamed portion of said synthetic resin coat having cells which are elongated and which vary widely in the direction from the outer skin to the hollow metal profile, said densified inner skin being of less density than said outer skin of said synthetic resin coat.

Claim 14

The frame element of claim 2, said means comprising a wash primer, said densified inner skin having substantially the same density as said outer skin.

Claim 15

The frame element of claim 1, said means comprising an adhesive agent.

Claim 16

The frame element of claim 1, said means comprising an agglutinant.

Claim 17

The frame element of claim 11, said hollow metal frame having two right-angled portions between said two hollow ribs and also having a stepped portion and a U-shaped inwardly directed portion between one of said two ribs and one of said two hollow ribs, said synthetic resin coat having a thickened closure ledge portion at each of said two hollow ribs, two right-angled portions each respectively on one of said right-angled portions of said hollow metal profile, a two-stepped portion at said stepped portion of said hollow metal profile, a U-shaped inwardly directed portion and a second two-stepped portion at said U-shaped portion of said hollow metal profile, and two outwardly projecting ribs at one of said right-angled portions of said synthetic resin coat, wherein said foamed portion has a density substantially within the range of 0.3 to 1.0 g/cm 3 .

Claim 18

A frame element comprising in combination: a hollow metal profile, and a synthetic resin coat bonded to the outer surface of said metal profile and having a densified outer skin facing outwardly from said metal profile, a foamed portion having an expanded cellular texture bonded to and unitary with said foamed portion, and a densified inner skin against and bonded to said metal profile.

Claim 19

A frame element comprising in combination: a hollow metal profile, and a synthetic resin coat bonded to the outer surface of said metal profile and having a densified outer skin facing outwardly from said metal profile, a foamed portion having an expanded cellular texture bonded to and unitary with said foamed portion, and a densified inner skin against and bonded to said metal profile.

Claim 20

The frame element of claim 17, the material of said synthetic resin coat and the material of said metal profile being connected by their natural adhesion.