Abstract: A water filtration system for residential homes having at least one U-shaped filter device, in the form of a tube, containing a three-layered particulate bed of a sand layer between anthracite layers held by end screens, for removing iron and manganese contaminants. Pressure gauges, an alarm element and a clarity analyzer containing a photocell are included in the system, for monitoring and controlling the filtration system.

Abstract: A method for manufacturing bladed disks, or blisks, for turbines by press welding of blades or outer airfoil elements to blade stives or inner airfoil elements on a disk is characterized by the provision on the outer and inner airfoil elements of flanges of excess flash material having alignment holes for dowel pins that assure alignment of leading and trailing edges of the airfoil elements during pressure welding, followed by removal of the excess flash material and the included dowel pins.

Abstract: An insulating layer on the surface of a slab of photo-responsive semicondor material is treated to produce a pattern of projections or mesas. The treatment includes the steps of producing a mask on the insulating layer using electron-beam lithography, etching holes in the layer through the mask, stripping the mask, and finishing with the usual electrical conductors on the insulating layer. An alternate embodiment etches the surface of the slab to produce a scrabrous surface, then coats with aluminum oxide and electrical conductors.

Abstract: A shield having particular adaptability in protecting a baseboard or like member when painting or otherwise treating a surface thereabove characterized by a plate assembly mounted on vertically adjustable legs. A top plate of the assembly is removedly secured to a base plate received on the aforesaid legs, where the leading edge of the top plate is straight and undercut at an inclined angle in a cooperating relationship with the top of the baseboard to prevent an unwanted flow of paint or like material onto the baseboard during painting and/or other treating procedures.

Abstract: A two-dimensional array of small, thin, flexible, metalized mirrors are mted atop supports on one side of a photoelectric layer. A visible light or infrared image on the other side of the layer induces an electron image (charge pattern) beneath the mirrors. The mirrors deflect towards the layer in accordance with the charge pattern. Light projected onto the mirrors is reflected and forms an image dependent on the deflections thereof.

Abstract: Metal components having an irregular cross-sectional configuration or made of different metals or alloys are bonded together through a forged joint resulting from application of localized high frequency induction heating combined with high energy rate impacting by preshaping interface portions to be joined as a function of the cross-sectional shapes of the components.