Electrically actuated door holder and release

Details Electrically actuated door holder and release Electrically actuated door holder and release

E - Fixed Constructions

05

C

16/13.51

E05C 17/02 (2006.01) E05F 15/20 (2006.01) E05F 3/22 (2006.01)

Patent

CA 1039464

ABSTRACT An electrically actuated door holder and release for the multi-point holding of a pivoted door throughout a range of door open angles, and for the release of a held door either electrically or in response to manual override. The door holder comprises a channel which pivotally supports through linkages an elongated hold-open bar. An elongated friction strip is carried by the hold-open bar. The hold-open bar is normally held in hold-open position under tension by an armature spring coupled to the hold open bar. The channel is formed with a slot which guides a slide block which moves linearly along the length of the hold-open bar in response to changes in the angle of door opening. The slide block carries a pivotally supported hold- open cam which engages the friction strip to effect door hold open in the event the armature linkage is further placed under tension by energization of an electromagnet. Upon deenergiza- tion of the electromagnet or alternatively upon the application of a manual override door closing force, the hold-open bar is pivoted away from the slide block and the friction strip engag- ing cam and the door is released.

221664

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