Abstract: A double-blade wind shield wiper, the blade assembly of which comprising a frame assembly for holding two parallel wiper blades. The frame assembly includes a main frame at the middle, two end frames at two opposite ends and two intermediate frames set therebetween which are respectively connected into shape by conning pins and spring plates. The frame assembly has vent holes and bevel strips for guiding air stream to force wiper blades to firmly attach to wind shield glass. An adapter is fastened in frame assembly to match with a connector for connecting the blade assembly to a wiper drive arm.

Abstract: An architectural rail system usable in doors, windows, and building walls for supporting and framing panels. Hollow aluminum rails are formed with internal ribs that form tracks for the slidable reception of ballistic steel strips or panels. The rails are thus structurally and ballistically reinforced against penetration by small caliber projectiles fired from rifles and/or pistols. The rail panel-framing system is useful where security against armed attack is a consideration, e.g. in banks, cashier stations at movie theatres, area ticket windows, fast food restaurants, etc.

Abstract: When the number of pieces of postal matter stacked at a stacking section in a sorter with an automatic push-out apparatus of the invention reaches a number which allows a push-out operation before or after a full-stack operation, the postal matter is transferred to a corresponding empty tray. The postal matter which is to be stacked at this stacking section during the push-out operation is stacked at a preliminary stacking section. After the stacking section is restored, the postal matter stacked at the preliminary stacking section is transferred to the empty tray.