Abstract: A screen assembly includes a core having an edge and first and second opposite side surfaces. A retainer, or edge treatment, is coupled to the edge of the core and extends outwardly from the core. The retainer includes first and second resilient limbs having respective edge portions defining a mouth. First and second cover portions overlie the core and exterior surfaces of the retainer. The first and second cover portions wrap around the first and second limbs and are disposed through the mouth such that the edges of the first and second cover portions are retained by the limbs. Various screen supports and accessory interface members also are provided.

Abstract: A screen assembly includes a core having an edge and first and second opposite side surfaces. A retainer, or edge treatment, is coupled to the edge of the core and extends outwardly from the core. The retainer includes first and second resilient limbs having respective edge portions defining a mouth. First and second cover portions overly the core and exterior surfaces of the retainer. The first and second cover portions wrap around the first and second limbs and are disposed through the mouth such that the edges of the first and second cover portions are retained by the limbs. Various screen supports and accessory interface members also are provided.

Abstract: A screen assembly includes a core having an edge and first and second opposite side surfaces. A retainer, or edge treatment, is coupled to the edge of the core and extends outwardly from the core. The retainer includes first and second resilient limbs having respective edge portions defining a mouth. First and second cover portions overly the core and exterior surfaces of the retainer. The first and second cover portions wrap around the first and second limbs and are disposed through the mouth such that the edges of the first and second cover portions are retained by the limbs. Various screen supports and accessory interface members also are provided.

Abstract: An alarm for indicating a locking barrier has been left open for a specified period of time, and a method for its use. An alarm circuit includes a timer, an alarm and a timer resetter. The timer begins a countdown when the locking barrier is left in an open position. If the countdown ends without the timer having been reset by the timer resetter, the alarm emits a signal indicating the locking barrier has been left in an unlocked position.

Abstract: A self-locking mechanism for use with a locking barrier on a cabinet. The locking mechanism includes an actuator and one or more locking members for securing the locking barrier in a closed position. When the locking barrier is in an open position, a detent element holds one of the locking members and the actuator in an unlocked position. A projection attached to the cabinet disengages the detent element upon closing of the locking barrier, thus allowing the locking member to extend into its locked position.

Abstract: A powered medical handpiece including an oscillatingly driveable chuck, and a blade fixable on the chuck and oscillating driveable thereby at a small amplitude for cutting. The chuck comprises a platform, a holddown screw having an enlarged head surrounded by a frictionally engaged cup washer and a shank structure threaded down into a central portion of the platform. A set screw limits the extent of unthreading of the screw from the platform. The blade is plate-like and has a forward cutting portion and a rearward mounting portion. The rearward mounting portion comprises a key hole having locking structure at the small diameter end thereof for resisting unthreading of the screw from a tightened position clamping the blade atop the platform. The blade further has drive openings flanking the narrow portion of the key hole for receiving upstanding drive pins and guide pins fixed on the platform.

Abstract: A powered medical handpiece including an oscillatingly driveable chuck, and a blade fixable on the chuck and oscillating driveable thereby at a small amplitude for cutting. The chuck comprises a platform, a holddown screw having an enlarged head surrounded by a frictionally engaged cup washer and a shank structure threaded down into a central portion of the platform. A set screw limits the extent of unthreading of the screw from the platform. The blade is plate-like and has a forward cutting portion and a rearward mounting portion. The rearward mounting portion comprises a key hole having locking structure at the small diameter end thereof for resisting unthreading of the screw from a tightened position clamping the blade atop the platform. The blade further has drive openings flanking the narrow portion of the key hole for receiving upstanding drive pins and guide pins fixed on the platform.