Abstract: A method for coupling a conduit to a fitting. The method includes providing a fitting having at least one groove defined therein and a collar having a flange extending from an end of the collar, aligning the flange with the groove, and compressing the collar around a portion of the fitting to facilitate fixedly securing the flange within the groove, such that the collar is fixedly secured to the fitting.

Abstract: A connection for a tube is formed by placing a coiled spring around an end of a tube and inserting a barbed tubular portion from a connection into the tube. The connection forces the tube to expand applying pressure against the coil spring and forcing it to expand and exert radial pressure against the tube towards the inserted tubular portion.

Abstract: The invention is a system and associated connection fitting for connecting a refrigerated line or air conditioning hose to the compressor unit or component on one end and the evaporator unit or component on the other end of a residential or commercial air conditioning or refrigeration system. The hose will be of a construction, which as well as having a relatively high bursting strength, will also not allow the refrigerant to permeate through the hose and escape into the outside environment. The associated connecting fitting allows the hose to be connected to the compressor/evaporator unit. The mounting surface of the fitting will allow it to either slide over or fit into the corresponding fitting on the compressor and/or evaporator unit. The opposite end, which shall connect to the hose assembly, will have flanges and “O” rings which when clamped will provide a secure connection as well as prevent loss of refrigeration.

Abstract: A method of producing a hose-connector assembly, including the steps of forming by extrusion an inner resin tube layer, forming by extrusion an outer rubber protector tube layer having substantially the same length as the inner resin tube layer, so as to cover the outer surface of the inner resin tube layer over the entire length of the inner resin tube layer, to obtain a laminar tubular blank consisting of the inner resin tube layer and the outer rubber protector tube layer, cutting the laminar tubular blank into pieces, and press-fitting an end portion of a tubular connector in each of at least one of the opposite end portions of the inner resin tube.

Abstract: A method for producing a cylindrical flange for the end of an air duct is produced by compressing a panel by differing amounts to cause the panel to take on an arcuate cylindrical shape.

Abstract: A method of connecting a resin hose to a metal pipe comprising the steps of: forming a fluororubber coating layer on an inner peripheral surface of the resin hose; forming a lubricating layer of a fluorine-containing lubricant on an inner peripheral surface of the fluororubber coating layer; and inserting an end portion of the metal pipe into an end portion of the resin hose formed with the lubricating layer. Fluorine atoms in a fluororubber molecular skeleton are hydrogen-bonded to hydroxyl groups introduced in a metal of the metal pipe and therefore the adhesion between the resin hose and the metal pipe is enhanced for improvement of the sealing property. Further, the lubricating layer facilitates the insertion of the metal pipe into the resin hose for the connection therebetween.

Abstract: A coupling and methods for assembling and using the coupling for connecting a hose with a tube, pipe or other hose in an automotive refrigerant system. The coupling comprises a connector member connected to a tube, pipe or hose, the connector member having at least one circumferential groove into which at least one sealing member is disposed. A hose is fitted over the connector member and covers the sealing member. A collar is disposed over the hose and the at least one sealing member and is deformed such that the hose is brought into engagement with the at least one sealing member and the at least one sealing member and hose occupy substantially 100% of the volume of the at least one circumferential groove.

Abstract: A method and apparatus for assembling a drip irrigation system includes a drip irrigation member with a connector and includes a length of tubing. The tubing has an end. A securing member is mounted on the end of the tubing. The end is slidably forced over the connector. The securing member is rolled along the tubing to a position at which the securing member elastically circumferentially compresses the tubing against the connector.

Abstract: Ducts are formed from rigid or semi-rigid insulation boards by forming a plurality of longitudinally extending, spaced apart, parallel kerfs in a first major surface of each of the insulation boards which is adapted to be the interior surface of the duct. When the insulation board is formed into a duct of the preselected dimensions, the shoulders of the kerfs adjoining the interior surface of the duct abut and, preferably, the insulation material in the shoulders of the kerfs is compressed. The flexibility of the insulation boards, in the direction of the widths of the insulation boards, is controlled by increasing the depths and/or the widths of the kerts and/or decreasing the spacing between the kerfs to make the insulation board more flexible and by decreasing the depths and/or the widths of the kerfs and/or increasing the spacing between the kerfs to make the insulation board less flexible.

Abstract: A device for crimping or coupling end elements of a flexible pipe. The pipe includes a metal carcass of a helically wound wire wherein the winding provides gaps between adjacent windings. A sealing sheath outward of the carcass. The device comprises a cylindrically shaped tubular nipple that fits over the carcass with a tapered first conical leading end that is insertable between the sealing sheath and the carcass. The nipple has over a portion of its external surface grooves which substantially match in shape the squeezed out or crept parts of the sheath such that after the nipple has been installed at least part of the squeezed out crept parts of the sheath are almost completely housed in the grooves of the nipple.

Abstract: A hose mount comprises a sheet-metal blank (1) which is bent into a sleeve (16), is provided on one side with cold-formed projections (12, 21) in the form of points (12) or ribs, is bent into a cylindrical body and the edges of which, during bending, are joined together in a form-fitting manner and are finally welded or soldered together.

Abstract: A method for producing a connector for a fuel injection nozzle of an internal combustion engine and a method of producing the connector at a reduced cost are disclosed wherein the connector has light weight and exhibits excellent dimensional accuracy. The connector 20 includes a cylindrical fuel injection nozzle fitting portion 21 of which one end is designed to have a flared peripheral surface 23 and of which the other end includes a delivery pipe connecting portion 22 having a diameter smaller than that of the cylindrical fuel injection nozzle fitting portion 21. A plate-shaped position determining portion 24 is formed integral with the flared peripheral surface 23 of the cylindrical fuel injection nozzle fitting portion 21 at a predetermined position. The position determining portion 24 is for determining the position of the connector relative to the fuel injection nozzle and is angularly bent relatively to the injection nozzle fitting portion. The connector is made entirely of a sheet metal.

Abstract: A method of assembling a gas supply device within an appliance cabinet is disclosed. The method comprises bending a tube assembly prior to installation in the appliance, attaching a fitting to the first end of the tube, attaching the fitting of the first end of the tube to a burner assembly, attaching a second fitting having a non-circular portion to the second end of the tube, attaching a mounting bracket with a non-circular profile to the non-circular portion of the second fitting in a fixed condition to prevent rotation of the body with respect to the bracket, and mounting the tube assembly in the appliance cabinet.

Abstract: A method of manufacturing a hose coupling from an intermediate blank material, the hose coupling having an inner tube or tubular nipple portion, an outer tube or tubular sleeve portion and a head portion, all formed by plastic deformation from an intermediate blank material. The head portion is provided with a bore at an end opposite the end where the nipple portion and the sleeve portion are joined. In addition, the head portion is internally provided with a female thread and a conical seal portion.

Abstract: A flexible connector apparatus for decoupling vibrations, for example, along the components of an internal combustion engine exhaust system. The flexible connector apparatus is provided for connecting first and second components in the exhaust system, and includes a bellows for accommodating relative movement between the first and second components. The flexible connector apparatus includes an attachment construction which enables weldless, gasketless connection of the bellows to at least one of the first and second components. The flexible connector apparatus may include a liner tube structure having inlet and outlet liner tubes. An alternative construction incorporates a multi-ply bellows in the absence of a liner structure.