Insulator for rail interlock at upper/lower window sash interfac

Details Insulator for rail interlock at upper/lower window sash interfac Insulator for rail interlock at upper/lower window sash interfac

1987-09-18

1989-05-09

Scherbel, David A.

Static structures (e.g., buildings)

Insulating insert; e.g., filler in cavity in preconstructed...

Insulation suspended from discrete member within cavity

49DIG1, 49490, E04B 174

Patent

active

048276855

ABSTRACT:
A modification for window or door assemblies having interlocks on the sash rails where insulating material is placed between the interlock of a lower rail to an upper sash and the interlock of an upper rail to a lower sash so as to act as a thermal barrier against heat conduction through the upper sash which is exposed to exterior climate of the building in which the window or door assembly is being used.

REFERENCES:
patent: 1976766 (1934-10-01), Blessin
patent: 2975492 (1961-03-01), Persson
patent: 2981385 (1961-04-01), Osten, Sr.
patent: 3055468 (1962-09-01), Horejs et al.
patent: 3381434 (1960-05-01), Carson
patent: 4015380 (1977-04-01), Hemminger
patent: 4024690 (1977-05-01), Collins
patent: 4151682 (1979-05-01), Schmidt
patent: 4344257 (1982-08-01), Anderson
patent: 4471584 (1984-09-01), Dietrich
patent: 4619092 (1986-10-01), Kaminaga

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