Removable mullion assembly

Details Removable mullion assembly Removable mullion assembly

1997-09-24

1999-04-06

Redman, Jerry

Movable or removable closures

Closure mount or stop on independent movable or removable...

49 7, E06B 500

Patent

active

058903194

ABSTRACT:
The removable mullion assembly allows a mullion to be removed, thereby allowing wider objects to pass through double doors. The top fitting of the assembly includes a spring loaded retaining bolt which locks the mullion in place. A locking mechanism attached to the top fitting allows the retaining bolt to be disengaged from the mullion. However, in the event of a fire, a meltable platform within the top fitting releases a deadlock, which mechanically blocks the retaining bolt from disengaging the mullion.

REFERENCES:
patent: 3000062 (1961-09-01), McCandless
patent: 3319382 (1967-05-01), Hand
patent: 4012066 (1977-03-01), Salvatore
patent: 4146994 (1979-04-01), Williams
patent: 4161804 (1979-07-01), D'Hodge et al.
patent: 4865367 (1989-09-01), Choi
patent: 5427420 (1995-06-01), Moore
patent: 5435102 (1995-07-01), McCarthy
patent: 5450697 (1995-09-01), Prucinsky et al.
patent: 5464259 (1995-11-01), Cohrs
patent: 5471792 (1995-12-01), Higgins
patent: 5527074 (1996-06-01), Yeh

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