Track-type door hold-open device

Details Track-type door hold-open device Track-type door hold-open device

1987-01-02

1988-06-14

Godici, Nicholas P.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Checks and closers

292270, 292278, E05F 300, E05C 1704, E05C 1716

Patent

active

047502363

ABSTRACT:
A door hold-open device is adapted to work with a conventional single-arm door closer. The device comprises a shoe moving along a track and connected to the closer operating arm. A detent in the form of a wheel is provided in the track which can be lowered through linkages by a solenoid to engage the shoe. Spring pressure on the detent can be adjusted in the field. The detent holds the shoe at one end of the track so that the door is held open. But the door can be forcibly closed causing the shoe to raise the detent, or the solenoid can be deactivated to raise the detent.

REFERENCES:
patent: 2108891 (1938-02-01), Johnson
patent: 2277316 (1942-03-01), Garrison
patent: 2958089 (1960-11-01), Roehm et al.
patent: 3630560 (1981-12-01), Atkins
patent: 4286412 (1981-09-01), Stevens

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