Abstract: An apparatus for supporting a user includes a faceplate, an arm, a bridge, and a base. The bridge is rotatably attached to the faceplate to allow the faceplate to be pivotably adjusted. The bridge includes a hub with first and second hub bodies. Locking pins on the hub bodies slidingly engage pivot adjustment holes in first and second pivot adjustment rings. First and second buttons can be depressed to slide the hub bodies inwardly to separate the locking pins from the pivot adjustment holes to allow the hub to rotate, thereby allowing the faceplate to pivot. When the buttons are released, the hub bodies slide outwardly to insert the locking pins into the same or different pivot adjustment holes to prevent the hub from rotating.

Abstract: An apparatus for supporting a user includes a faceplate, an arm, and a base. The faceplate has an opening to receive a user's face. The arm is attached to the faceplate and the base. The base includes a base slide that is slidable within a slot of a base body. The base slide includes one or more lock pins that releasably engage one of multiple holes in a lock bar. The lock bar is mechanically coupled to a button body. When the button body is pulled distally, the lock bar moves away from the base slide such that the lock pin(s) is/are removed from the corresponding hole(s) to allow the base slide to slide within the slot. When the button body is released, the lock bar moves towards the base slide such that the lock pin(s) is/are inserted into the same or different hole(s) to lock the slide's position.

Abstract: An apparatus for supporting a user includes a faceplate, an arm, a bridge, and a base. The bridge is rotatably attached to the faceplate to allow the faceplate to be pivotably adjusted. The bridge includes a hub with first and second hub bodies. Locking pins on the hub bodies slidingly engage pivot adjustment holes in first and second pivot adjustment rings. First and second buttons can be depressed to slide the hub bodies inwardly to separate the locking pins from the pivot adjustment holes to allow the hub to rotate, thereby allowing the faceplate to pivot. When the buttons are released, the hub bodies slide outwardly to insert the locking pins into the same or different pivot adjustment holes to prevent the hub from rotating.

Abstract: An apparatus for supporting a user includes a faceplate, an arm, and a base. The faceplate has an opening to receive a user's face. The arm is attached to the faceplate and the base. The base includes a base slide that is slidable within a slot of a base body. The base slide includes one or more lock pins that releasably engage one of multiple holes in a lock bar. The lock bar is mechanically coupled to a button body. When the button body is pulled distally, the lock bar moves away from the base slide such that the lock pin(s) is/are removed from the corresponding hole(s) to allow the base slide to slide within the slot. When the button body is released, the lock bar moves towards the base slide such that the lock pin(s) is/are inserted into the same or different hole(s) to lock the slide's position.