Windows

Details Windows Windows

1978-05-23

1980-03-11

Friedman, Carl D.

Static structures (e.g., buildings)

Viewing port for specific environment

52789, E06B 712

Patent

active

041921119

ABSTRACT:
Window including a rectangular frame, which supports and encloses at least two panes separated at a certain distance, a slab being placed between said two panes, said slab having a width corresponding to the width of the panes but having a height which is smaller than the height of the panes, said slab being displaceable up and down by a current of air which is introduced in the frame under the slab and is let out above the slab or vice versa.

REFERENCES:
patent: 2439553 (1948-04-01), Winn
patent: 3167159 (1965-01-01), Bovenkerk
patent: 3903665 (1975-09-01), Harrison
patent: 3999345 (1976-12-01), Mikelvey
patent: 4093352 (1972-06-01), Pisar

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