초록 ▼

An automatic door operator for swing doors which uses a worm gear transmission to connect the motor to a belt and pulley which in turn is connected to a spur gear and drive gear. The door arm of the swing door is connected to a double-ended shaft which is part of the drive gear. A rack and pinion ge

An automatic door operator for swing doors which uses a worm gear transmission to connect the motor to a belt and pulley which in turn is connected to a spur gear and drive gear. The door arm of the swing door is connected to a double-ended shaft which is part of the drive gear. A rack and pinion gear and spring are used to provide the closing force to the door arm. The motor is mounted over the spring and the belt and pulleys are located alongside the motor which results in a compact non-handed design.

대표청구항 ▼

[ What is claimed is:] [1.] A door operator for a swing door, the door operator comprising:a pivotable door arm adapted to be attached to the swing door;a motor; anda gear assembly, the pivotable door arm being attached to the gear assembly, the gear assembly comprising a worm gear transmission conn

[ What is claimed is:] [1.] A door operator for a swing door, the door operator comprising:a pivotable door arm adapted to be attached to the swing door;a motor; anda gear assembly, the pivotable door arm being attached to the gear assembly, the gear assembly comprising a worm gear transmission connected to the motor; a pulley and belt drive connected to the transmission; and a spur sear assembly driven by the belt, the pivotable door arm being attached to the spur gear assembly, the pulley and belt drive being positioned alongside the motor and the motor being positioned between the transmission and the sour gear assembly.