US 4,570,381 AGranted

Single plane window or door structure

AssigneeProduct Design & Development, Inc.

InventorMaurice E. Sterner, Jr.

Life of this patent

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Abstract

An insulated single plane window or door assembly including a casing defining a generally rectangular opening in a building wall and having first and second pairs of spaced parallel tracks with each pair being adapted to support a glazing frame with the glazing frames normally disposed for sliding movement in parallel laterally spaced vertical planes and for pivotal movement to incline the glazing frames from their respective vertical planes, with one pair of tracks being adapted to displace the glazing frame supported therein laterally into the vertical plane of and into substantially edge-to-edge relation with the other glazing frame to close the door or window assembly. The casement includes a mullion extending transversely of the rectangular opening adjacent to the juxtaposed edges of the two glazing frames when in the closed position and a resilient seal is provided between the mullion and an external surface of the respective glazing frames. A manually actuated lock carried by one of the glazing frames is adapted to cooperate with the mullion to lock the glazing frames in the closed coplanar relationship and in engagement with the resilient seals to provide a secure, weather-tight closure.

A door or a window structure for installation in an opening in an exterior wall of a building, comprising

an outer frame defining a rectangular opening, said frame including a pair of spaced parallel side frame members and a pair of spaced opposed end frame members, said side and end frame members being rigidly joined to define said rectangular opening,
a mullion extending between and having its ends rigidly joined one to each said side frame member at a point substantially equally spaced from each said end frame member, said mullion being disposed adjacent the outer surface of said frame when the frame is installed in an opening in the exterior wall of a building,
a pair of outer tracks extending one along each said side frame member in parallel opposed relation to one another,
a pair of inner tracks extending one along each said side frame member in parallel opposed relation to one another,
a first substantially rectangular panel mounted for sliding movement along said pair of outer tracks from a closed position adjacent one of said end frame members to an open position spaced from said one end frame member,
a second substantially rectangular panel,
mounting means supporting said second panel for sliding along said pair of inner tracks from a closed position adjacent the other said end frame member to an open position spaced from said other end frame member, said mounting means including means supporting said second panel in substantially edge to edge coplanar relation with said first panel in said closed position and manually operable means to support said second panel in laterally spaced parallel relation to said first panel in the open position,
said mullion being spaced outwardly from and overlying adjacent edge portions of said first and second panels when said first and second panels are in said closed position,
locking means operable to releasably lock said first and second panels in said closed position, and
first seal means forming a weather-tight seal between said mullion and said first and said second panels when said first and second panels are in the closed position.

7 more elements

Abstract

Claims13