Joint structure for multiple window

Details Joint structure for multiple window Joint structure for multiple window

1989-12-14

1991-01-01

Murtagh, John E.

Static structures (e.g., buildings)

Multiroom or level

Curtain-wall; i.e., panel attached outside floor or beam

52397, E04B 530, E04B 288

Patent

active

049810014

ABSTRACT:
A joint structure for joining two adjacent window frames includes a mullion body disposed between two opposed vertical frame members on the interior side of the window fames and connected to the vertical frame members by a pair of screws extending loosely through a pair of horizontal oblong holes, respectively, in the mullion body and threaded to the vertical frame members, and an elastic backup member disposed between the vertical frame members on the exterior side of the window frames. The vertical frame members and the mullion body disposed therebetween are relatively movable in a horizontal direction within an extent of movement of the screws along the horizontal oblong holes and within a limit of extent of elastic deformation of the elastic backup member. With this horizontal relative movement, thermal contraction and expansion of top and bottom horizontal frame members is accommodated or canceled out which would otherwise result in a bending of the vertical frame members.

REFERENCES:
patent: 4543755 (1985-10-01), Crandell
patent: 4633631 (1987-01-01), Crandell

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