Movable or removable closures – Mounted for movement to facially stacked position
Patent
1977-07-11
1978-09-26
Kannan, Philip C.
Movable or removable closures
Mounted for movement to facially stacked position
49409, 49412, E05D 1526
Patent
active
041159535
ABSTRACT:
The system includes a plurality of movable heat insulating shutter sections forming a barrier to produce a "dead air gap" adjacent the interior of a window and increasing the heat insulation capacity of the windows. The sections are suspended by wheels, rollers or gliding fittings from guide tracks situated above the shutters and are movable therealong between opened and closed positions. The sections are provided with vertical and horizontal friction or pressure seals which, when the sections are in the closed position, seal the sections together and to the window embracement. The tracks and the suspending fittings are formed such that the sections can be pendulum-like pivoted away from the window in order to disengage the pressure of the seals and thus facilitate movement of the sections between the open and closed positions without friction at these seals. In one embodiment, portions of the guide tracks can be pivoted in their own horizontal plane together with a suspended shutter section to accomodate recessed windows or windows situated in or near wall corners.
REFERENCES:
patent: 1927982 (1933-09-01), Howard
patent: 2850089 (1958-09-01), Burke
patent: 3628289 (1971-12-01), Buffington et al.
patent: 3896508 (1975-07-01), Doan
patent: 3975862 (1976-08-01), Doan
Kannan Philip C.
Tekram Associates
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