Abstract: The seal for turning valve bodies, in particular for valves in radioactive lants, is composed of a molded element of flexible graphite which is coated with a thin, flexible tantalum layer. The tantalum enclosure surrounds the graphite molded element, preferably all around. The tantalum layer is sufficiently thin so that it remains flexible.

Abstract: A bottom profile for a can in which a center domeshaped portion is provided circumscribed by an annulus which may be flat or formed with a concentric bead or provided with various shaped depressions, the annulus merging at its outer edge with the cover edge of a frustoconical portion which at its upper edge merges into the can body wall, the inner edge of the annulus merging with the marginal edge portion of the dome and the depressions defining radial arrays of ribs or strength imparting configurations of different shapes.

Abstract: A method of annealing the flanges of double seamed end panels to obtain an effective seal and apparatus therefor.

Abstract: A method of annealing the flanges of double seamed end panels to obtain an effective seal and apparatus therefor.

Abstract: Sheet metal parts such as can covers, or the like, are deburred around the edges by an electrochemical treatment step in which the sheet metal to be deburred forms the anode in an alkaline electrolytic bath. The material removal is substantially limited to the location of the stamping burrs and edges around holes in the sheet material by controlling the current flow or current density in response to the physical size of the burr which is mechanically sensed and by properly limiting the duration of the current flow.

Abstract: An apparatus for automatically annealing end portions of wall-ironed drawn can bodies and welded side seam can bodies formed of sheet steel to reduce stresses therein wherein the end portions may be flanged without cracking, wrinkling or folding. The can bodies are moved along a continuous path by a rotary table and are supported for rotation about their own axes during such movement. Associated with each rotating can body is a blowing hood for developing a protective gas atmosphere surrounding the portion of the can body to be annealed. The blowing hoods and associated can body upper end portions pass through an annealing zone defined by an elongated induction loop. The apparatus is particularly useful in annealing processes for sheet metal formed of unkilled steel.