Showing papers on "Bend radius published in 1979"

Device for organizing optical fibers and the like

Abstract: A device for organizing optical fibers and the like at splice or slack points is provided. The device comprises a plurality of stacked tray-like supports having partially turned-up edges, with each separately hinged at one side thereof to a carrier. Each tray-like support is adapted to retain a looped fiber portion without damage by having a width at least equal to twice the minimum bending radius specified for that fiber.

High pressure hose construction and method of and apparatus for making the same

Abstract: A high pressure hose construction and method of and apparatus for making the same is disclosed wherein the hose construction has a smooth walled inner liner of resilient polymeric material, and an adhesive layer, which may also be of polymeric material bonded to the liner. A braided cover is disposed over the entire layer and embedded therein. This braided cover is comprised of a plurality of elongated intermeshing strands of non-metallic fibers, such as yarn, and metallic fibers. Preferably, every three strands are of flexible, non-metallic fibers, such as nylon fibers, and every fourth strand is of metallic fiber, such as piano wire or spring steel. One set of strands crosses over and under another set to produce an intermeshing or weaving effect. These strands may also extend in a direction at an angle, such as 45° or 53°, to the longitudinal axes of the liner, to improve the bend radius and prevent ballooning or extensions or the like of the finished hose construction when used in high pressure applications.

Bending fixture for tube contg. smaller second tube - uses circular bending core for small tube and C=shaped core in gap left in large tube

Abstract: The tube bending machine has a rotating form block (16) which determines the bending radius. A clamp jaw (19) locates the tube end against the straight side (38) on the form block (16) so that it retains it's relative angular position. When two tubes (15a, 15b), inside each other are being bent, around support core (30) is placed inside the inner tube, and a C-shaped core (31) fills the space between the inner and the outer tube. Both cores are attached to an outside movable anchor block (26) by two parallel rods (34, 35) of reduced dia. During bending, the supporting cores move relative to the tubes.

Bending plastic pipe

Abstract: A process and jig for field bending relatively large diameter plastic pipe, the jig being to guide the pipe at the point of tangency adjacent the bend after the pipe is heated and bent to form a smooth curvature to the desired radius and degree of bend as determined by the jig. The jig includes a two-piece spreader tube and a right and left hand guide, each adjustable in width, angle and spacing. The guides are U-shape and extend beneath the spreader tube so that the pipe may be placed on a flat horizontal surface. Each guide is provided with a protractor, one of which includes an offset scale so that offsets or curves with generally parallel tangents may be formed. The spreader tube includes a scale to ascertain the chord in terms of the radius for given degrees of bend.

Device for containing optical fibers and the like

Abstract: of the Disclosure A device for organizing optical fibers and the like at splice or slack points is provided. The device comprises a plurality of stacked tray-like supports having partially turned-up edges, with each separately hinged at one side thereof to a carrier. Each tray-like support is adapted to retain a looped fiber portion without damage by having a width at least equal to twice the minimum bending radius specified for that fiber.

Manufacture of thin wall welded structure by electron beam welding

Abstract: PURPOSE:To obtain a product with small weld deformation, having weld zone of metallurgical and mechanical property similar to that of base material, by shaping the material to be welded in such a manner that flat portions are kept on both sides of the groove, and by correcting the shape after welding as in butting of flat plates. CONSTITUTION:Thin wall sheet to be welded is so shaped that flat, long narrow portions 1' are remained at least on both sides of the original sheet 1 in the longitudinal direction. The shape of the section of the original sheet 1 can be selected optionally in accordance with the size of the vacuum chamber, however it is preferable to have a bending radius as large as possible in order to facilitate the treatment in the later process. Flat sheet portions 1' are butted into each other with or without use of a backing, and welded at suitable intervals so that no gap is made. Thereafter, the sheet is electron beam welded by use of restraining tools to produce primary original pipe A, if necessary, with elimination of reinforcement. Then the original pipe A is shaped into a bellow C directly, or through correction to a secondary original pipe B of high roundness.

Four-pole cable plug - has space requirement reduced by insetting cable entrance hole by minimum bending radius of cable

Abstract: The four-pole cable plug has the opening (7) for the cable in its end (8) set in away from the end by a distance equal to or greater than the minimum permissible bending radius of the cable (2). The hole is therefore roughly at the centre of the large face of the plug. The advantage of insetting the hole in this way lies in making the plug smaller both in its direction of insertion and at right angles to this direction.