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US 4,040,143 AGranted
Releasable door hold-open device
AssigneeSchlage Lock Company LLC
InventorsThomas R. Lasier, William G. Rodseth, Raymond H. Schnarr
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AssigneeSchlage Lock Company LLC
InventorsThomas R. Lasier, William G. Rodseth, Raymond H. Schnarr
Estimating the term…
A releasable door hold-open device or assembly is mounted on the header over a door panel. The assembly has a track channel with a top web and depending flanges. A door panel connector arm has a traveller movable in the track channel. A solenoid operates a detent in the track channel near the hinge end of the traveller path. A conductor channel is fastened to the top web and communicates with the track channel through an opening. A connector block releasably adjoins the track channel and the conductor channel at the hinge end thereof. A smoke detector underlies the connector channel at the other end of the track channel. Conductors from outside extend through the connector block, through connecting plugs in the block and track channel and to the solenoid and through the conductor channel to the smoke detector.
A releasable door hold-open device comprising an elongated channel defining an internal guide, a door connector, a traveller on said door connector adapted to travel in a predetermined path in said guide, holding means on said channel movable between a first position in engagement with said traveller and a second position out of engagement with said traveller, a solenoid adapted when energized to hold said holding means in said first position, means for mounting said solenoid at one end of said elongated channel, an electric smoke detector, means for mounting said detector at the other end of said elongated channel, at least one electrical conductor connected to said detector and to said solenoid, and means for disposing said conductor along said channel at one side of but out of said path.
Dependencies are inferred from the claim text.