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公开(公告)号：WO2020186048A1
公开(公告)日：2020-09-17
申请号：PCT/US2020/022373
申请日：2020-03-12
摘要： An exemplary latchbolt assembly includes a latchbolt, a locking sleeve, and a roller engaged between the latchbolt and the locking sleeve. The latchbolt is configured to drive the roller from a first position to a second position as the latchbolt moves from a projected position to a depressed position. The locking sleeve includes a blocking surface and a recessed portion. When the blocking surface is aligned with the roller, the locking sleeve retains the roller in the first position, thereby retaining the latchbolt in the projected position. When the recessed portion is aligned with the roller, the locking sleeve permits movement of the roller from the first position to the second position, thereby enabling depression of the latchbolt.
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公开(公告)号：WO2021119596A1
公开(公告)日：2021-06-17
申请号：PCT/US2020/064881
申请日：2020-12-14
发明人： PLUMMER, Brady , RAI, Subashchandra G. , EICKHOFF, Brian C. , MILLER, Benjamin L. , POOJARY, Prajna
IPC分类号： E05F1/00 , H02P5/00 , E06B3/00 , E05F3/22 , E05F15/611 , H02K11/215 , H02K7/116 , E05F15/614 , F16H1/28 , E05F15/627 , H02K7/10
摘要： An exemplary method relates to operating a door closer assembly including a closer body, a pinion rotatably mounted to the closer body, a motor including a motor shaft, and a bidirectional clutch connected between the pinion and the motor shaft. The method generally involves permitting, by the clutch, rotation of the pinion in each of a first direction and a second direction without transmitting rotation of the pinion in either direction to the motor shaft, sensing, with a sensor, a rotational position of the pinion, comparing, by a controller, the rotational position of the pinion with a desired rotational position, based on the comparing, driving the motor to rotate the motor shaft, and by the clutch, coupling the motor shaft with the pinion in response to rotation of the motor shaft, and thereby transmitting torque from the motor shaft to the pinion and urging the pinion toward the desired rotational position.
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