Abstract: A door closer assembly provides a closing force to a door swingably mounted on a door jamb by a pair of arms pivotally attached to the door and the door frame. The door closer assembly has a housing and a spring for providing a closing force on the arm which closes the door when it is an open position. The improvement of the present invention includes a spring cushion device mounted on the housing of the door closer assembly for stopping the opening movement of the door as it reaches a predetermined angle of rotation. The cushion device provides a resilient counteracting force on the arm as the door reaches its predetermined angle of rotation which lessens the wear and tear exerted on the assembly by the opening force of the door.

Abstract: A linear drive power door operator selectively and automatically opens and closes a door swingably mounted on a door jamb. The door operator includes a power screw disposed within a housing and a drive which powers the rotation of the power screw for moving a piston having a threaded bore threadably engaging the power screw linearly upon activation of the drive. A rack having teeth is engaged by the piston for moving the rack linearly from end-to-end. The power door operator further includes a pinion having teeth threadably engaging the teeth of the rack. The pinion is rotatable about a vertical axis upon the side-to-side linear movement of the rack. At least one link arm is pivotally connected at one of its ends to the pinion and pivotally connected at its other end to the door. A control device controls the operation of the drive for moving the door between a closed position and an open position.

Abstract: A door hold open device is disclosed for maintaining a door swingably mounted on a door jamb in an open position. The door hold open device includes an elongate track housing mounted on the door jamb, and a shaft disposed within the track housing. The shaft extends along a horizontal axis and is mounted for free rotation about the axis. A slider block having a threaded bore threadably engages a threaded portion of the shaft. The slider block is capable of moving linearly along the horizontal axis and causes the axial rotational movement of the shaft as it moves linearly from side-to-side. An arm link is pivotally connected at one of its ends to the slider block and pivotally connected at its other end to the door. The arrangement is such that upon manually opening and closing the door, the arm link moves the slider block linearly from side-to-side thereby causing the axial rotational movement of the shaft.

Abstract: A track driven power door operator selectively and automatically opens a door swingably mounted on a door frame. The power door operator includes an elongate track housing mounted on the door frame and a power screw disposed within the track housing. A drive is provided for powering the rotation of the power screw about the horizontal axis for moving a slider block linearly along the horizontal axis upon its activation. An arm link is pivotally connected at one of its ends to the slider block and pivotally connected at its other end to the door. A control is provided for controlling the operation of the motor for moving the slider block which rotates the door between its closed and open positions.

Abstract: A door latch operating assembly is capable of rotating a door latch arm between a first locked position for locking a door in a closed position and a second unlocked position for unlocking the door. The latch operating assembly includes a lock platform and a handle having a gripper portion which is grasped by a person's hand for rotating the handle, and a shaft portion attached to the gripper portion and extending therefrom through an opening in the lock platform. A driver cam has a housing which receives the shaft portion of the handle, and at least one wing member extending laterally outwardly from one side of the housing. The wing member has an upwardly facing engaging surface for engaging a link which is linearly movable with respect to the lock platform. The link has a bottom edge portion with a downwardly facing engaging surface which bears against the upwardly facing engaging surface of the wing member of the driver cam, and a top edge portion with an upwardly facing engaging surface.

Abstract: A door handle mounting assembly capable of being mounted on a door includes a lock platform having an opening formed therein and a handle mounted on the lock platform without the need of mechanical fasteners, staking or welding. More specifically, the handle has a gripper portion which is grasped by a person's hand for turning the handle, and a shaft portion which is attached at one of its ends to the gripper portion. The shaft portion extends through the opening of the lock platform and has a circumferential groove formed therein. A retaining collar having an annular wall is positioned to engage the lock platform, the collar having an inwardly projecting annular ring connected to the annular wall. The assembly also includes a driver cam having a housing with a hollow boss extending through the opening of the lock platform along a longitudinal axis.