Control device for automatic door operator

Details Control device for automatic door operator Control device for automatic door operator

E - Fixed Constructions

05

F

268/29

E05F 15/12 (2006.01)

Patent

CA 1127192

ABSTRACT A control device for an automatic door operator is a highly compact assembly employing a plurality of disc- type springs confined within a housing and cooperable with a plunger; the assembly being fixed to one of a pair of adjacently disposed rotatable gears in the drive train of an automatic electro-mechanical door operating mechanism. The involved gears are disposed in overlapping relationship and the stop assembly of this invention is engageable with the periphery of one of the gears in response to partial rotation of the other whereby to limit their relative ro- tation and limit door opening operation. The disc-springs are capable of producing impact resistance of a relatively high value and of sufficient magnitude to protect the mechanical drive train from expected overload forces. Adaptation of the disc-spring concept for the door stop permits an extremely compact stop device capable of being mounted within the limited confines of a header mounted or under-the-floor mounted housing for the operator mech- anism, thereby satisfying desired esthetic requirements while avoiding operational defects prevalent with hereto- fore known hydraulic or pneumatic door stops.

338330

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