Door closer for a two-panel door with a closing sequence control

Details Door closer for a two-panel door with a closing sequence control Door closer for a two-panel door with a closing sequence control

1996-02-06

1997-07-29

Kannan, Philip C.

Movable or removable closures

Bipartite, center opening

Overlapping meeting edges

E05C 704, E05D 1518, E06B 332

Patent

active

056512163

ABSTRACT:
A door closing mechanism for a two-panel door having a leading panel and a trailing panel disposed adjacent to one another and being hingedly connected to a door frame. The door closing mechanism controls the closing sequence of a leading panel and a trailing panel, such that a trailing panel is locked in an open position prior to the closing of a leading panel. A locking mechanism, for locking and unlocking the trailing panel, includes a pivoting member which interacts, inter alia, with a sliding block and release member, for pivotally locking and unlocking a locking device. This locking mechanism pivots the pivoting lever into a locking position for preventing the closure of a trailing panel in advance of a leading panel upon a leading panel moving from a closed position to an open position. This locking mechanism can also pivot the pivoting lever into an unlocking position for permitting positioning of a trailing panel into a closed position upon a leading panel being in a closed position. This door closing mechanism can further be designed for concealment within the guide rail and leading and trailing panels.

REFERENCES:
patent: 3822506 (1974-07-01), Fishbach
patent: 3895461 (1975-07-01), Maynard, Jr. et al.
patent: 4429492 (1984-02-01), Imhoff
patent: 4949505 (1990-08-01), Cohrs
patent: 4967512 (1990-11-01), Schroder et al.
patent: 5033234 (1991-07-01), Simon et al.
"Unsichtbarer Schliessfolgeregler", Baubeschlag magazine, Nov. 1984.

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