Abstract: A filter screen including a mounting frame mounted on a monitor, a screen glass holder frame pivotally connected to the mounting frame, a conductive screen glass mounted between the front and back shells of the screen glass holder frame and covered over the screen of the monitor, and a radiation alarm and eliminator circuit mounted on the screen glass holder frame and connected to the hot and neutral slots of a power outlet socket by a two-blade plug permitting the radiation of the monitor to be guided by the conductive screen glass to grounding, and wherein the radiation alarm and eliminator circuit has an indicator lamp and a buzzer controlled by an option switch to flash or buzz when the two blades of the plug are not inserted into the hot and neutral slots of the power outlet socket correctly.

Abstract: The present invention is a bi-section adjustable connector used to bridge two segments of an opened handrail at a turning place.The device consists of two L-shaped component bars. During installation the two component bars are joined end to end by one or two sets of a nut and washer mounted on a bolt having one or both ends threaded. Each half of the bolt is placed in an individual horizontal hole in each component bar.Before tightening up the nuts and washers on the extended portions of the bolt, the assembled bars can be adjusted properly by pivoting along the bolt to align other ends with the ends of the opened handrail at the turning place.Following the tightening up of the nuts, the smooth connection is completed by fixing those ends together.

Abstract: An improved design of an elbow for a staircase hand rail wherein a specially designed intermediate bearer is used to join the elbow terminal of two adjoining, separately provided hand rails.