Abstract: An operator for opening and closing movable barriers such as garage doors comprising a pass point limit system which is a component of an operating head. The operator is responsive to remote control from a wall panel or other location remote from the operating head to enable setting and adjustment of door travel limits from a remote location, without requiring installation of limit switches separate from the operating head.

Abstract: An operator for opening and closing movable barriers such as garage doors comprising a pass point limit system which is a component of an operating head. The operator is responsive to remote control from a wall panel or other location remote from the operating head to enable setting and adjustment of door travel limits from a remote location, without requiring installation of limit switches separate from the operating head.

Abstract: A garage door operator having reduced noise output during operation includes a head unit having a housing. A motor mount is connected to the housing to support an electric motor. A vibration damper is interposed between the motor mount and the electric motor to reduce noise radiated from the housing when the electric motor is energized to drive a garage door up and down.

Abstract: A snubber for tension members such as drive chains and drive belts includes a spindle having an upstanding wall at one end and a recess at the opposite end. A compressed spring is carried on the spindle and is retained thereon in its compressed state by a split ring received in the recess. The snubber can be used with tension members associated with garage door openers, for example.

Abstract: A garage door operator for moving a garage door between open and closed posiitons includes a head unit for being held by a support structure positioned remote from the door with the head unit having a motor and a drive wheel with spaced teeth on its periphery for being driven by the motor. The operator also includes an elongate rail having a first end which is held by a support structure disposed adjacent and above the door with the rail including a pulley located adjacent the first end. The rail also includes a second end for being held adjacent to and in alignment with the drive wheel. The operator also includes a drive belt assembly for training about the drive wheel and the pulley and for being supported by the rail. The belt assembly includes a length of a plastic belt with teeth on one surface thereof matching the teeth on the drive wheel.