公开(公告)号：US3926461A

公开(公告)日：1975-12-16

申请号：US49368574

申请日：1974-08-01

Applicant: RIXSON FIREMARK

Inventor： D HOOGE RICHARD E

IPC: E05F3/22 ,  E05F15/20 ,  E05C17/04

CPC classification number: E05F3/222 ,  E05F15/72 ,  E05F2003/228 ,  E05Y2201/41 ,  E05Y2201/462 ,  E05Y2201/484 ,  E05Y2201/488 ,  E05Y2800/25 ,  E05Y2900/132 ,  Y10T292/301

Abstract: An electrically actuated door holder and release for the multipoint 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 holdopen 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 deenergization 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 engaging cam and the door is released.