Abstract: A door closer (20) is attachable to a door (24) and is formed with a chamber (44) in which a piston element (50) is movable to move fluid from the chamber to a reservoir (82) upon opening of the door. After the door (24) has been opened to a position, for example, of sixty to seventy-five degrees, continued opening of the door causes the fluid to be compressed within the chamber (44) and to be directed only through a back check valve (95) to the reservoir (82). This results in the development of an adjustable "back check" condition to provide a counterforce to the continued opening of the door. The adjustable valve (95) includes a spring biased ball (144), the biasing of which must be overcome by the force of the fluid being compressed in the chamber (44) to allow for fluid to pass through the valve to the reservoir (82).

Abstract: A pipe bending machine has a bending template (10) around which a pipe (13) is bent. The bending template (10) is provided with a position sensor (32) that detects the bending path in dependence on the rotational position. A pushing device (17) engages the unbent portion (13a) of the pipe and urges the same towards said bending template (10). The pushing device (17) is provided with a position sensor (30). The position signals (PS1, PS2) of the two position sensors (32, 30) are compared in a control circuit (41) and an actuation signal (SS) is generated for controlling a pressure controller (42) to adjust the pressure of the drive (22) of the pushing device (17). The actuation signal (SS) is generated such that, in the case of equal position signals (PS1, PS2), the drive (22) of the pushing device (17) is supplied with a pressure that determines the upsetting force exerted on the pipe.

Abstract: An apparatus and method for cutting a pipe includes first knife means having a cutting edge adjacent a surface of the pipe and second knife means having a cutting edge adjacent an opposite surface of the pipe. To cut the pipe, the first knife means is moved into an overlapping relation with the second knife means such that a first portion of the pipe is cut, the first knife means is retracted and rotated about the axis of the pipe into a position adjacent a second uncut portion thereof, and the first knife means is again moved into an overlapping relation with the second knife means such that a second portion of the pipe is cut.

Abstract: A process of hot forging a steel at an ultrahigh temperature, comprising the steps of: heating a steel containing less than 1 wt % carbon in an atmosphere substantially composed of a non-oxidizing gas at a high heating rate sufficient for suppressing the oxidation of the steel caused by a residual oxidizing impurity gas in the atmosphere to a temperature either within or slightly below a range in which the steel has a solid-liquid dual phase structure; and forging the heated steel in a hot forging die at a high working speed in accordance with a preheating temperature of the die so that the steel is maintained at a temperature necessary for imparting the steel with a formability necessary for effecting the forging until a desired form is attained.

Abstract: A method of manufacturing a long tube having a small diameter, such as a tube for use in a heat exchanger, by cold working. A plug drawing using a pressurized lubricating oil of 500 kgf/cm.sup.2 or more accompanied by the reduction in wall-thickness is adopted as at least the final cold work. In the case where a tube having desired dimensions is not obtained by this plug drawing, subsequent free-loaded drawing can be conducted.

Abstract: A method and apparatus are provided for straightening a coupling shaft comprising a tubular member having a midship tube shaft affixed at one end thereof, with the midship tube shaft mounted in a center shaft support bearing assembly. The coupling shaft is rotatably supported at the end opposite the midship tube shaft and at the center shaft support bearing which rotatably supports the midship tube shaft of the coupling shaft. The coupling shaft is rotated relative to an indicator for measuring radial misalignment thereof, and the radial misalignment is measured at one or more locations along the midship tube shaft. A force is applied to the coupling shaft to permanently deflect the same and thereby reduce any observed radial misalignment.

Abstract: The present invention is directed to a method and apparatus for bending and cutting outboard terminals, or leads, of surface mountable integrated modules applied to a carrier frame wherein slots are cut in the carrier frame so that retaining webs remain between the slots and the circuit modules. Each of the retaining webs interconnects the outboard terminals along one side of the circuit module to stabilize the terminals during a subsequent bending of the leads. A combination cutting and bending die is moved downward to cut the retaining webs free from one another and to bend the leads into their desired shape. The retaining webs and any excess length of the outboard terminals is then trimmed off, all while the circuit module is held in a hold-down part so that no stresses are transferred to the chip module during bending.

Abstract: Aluminum alloy finstock for making heat exchanger fins. The finstock is prelubricated with a water-microemulsifiable lubricant composition comprising an oil, an anionic surfactant, a polyalkoxy alkylphenol cosurfactant, and optionally a C.sub.10 -C.sub.36 mono- or dicarboxylic acid. The lubricant composition is preferably applied to the finstock dissolved in hexane which is then evaporated, leaving a water-microemulsifiable lubricant residue. The lubricated product is readily washable with water to microemulsify the lubricant residue into a microemulsion.

Abstract: An apparatus for making elongated headed workpieces having a conveyor device for successively transporting elongated workpieces such as wire pieces transversely to their longitudinal axes from one treatment station into at least one treatment station and including a guided conveyor belt assembly to which the workpieces may be clamped by their circumferential surfaces. Two sections, running together and side by side, of two conveyor belts are guided in such a manner between the stations that they remain in immovable contact on both sides with the transported workpieces. At least one of the two conveyor belts is a toothed belt in which the gaps between the teeth take up the workpieces singly.

Abstract: Disclosed is a process for the preparation of a thickness-reduced deep-draw-formed can, which comprises the steps of (i) coating a crystalline thermoplastic resin on a metal plate, (ii) heating the coated metal plate at a temperature higher than the glass transition point (Tg) of the thermoplastic resin and draw-forming the coated metal plated, and (iii) heating the obtained preliminarily drawn cup at a temperature higher than the glass transition temperature (Tg) of the thermoplastic resin and redrawing the cup at a bend-pulling speed of at least 1 m/min. According to this process, damage of the coating layer can be drastically moderated, and a deep-draw-formed can having prominently improved corrosion resistance and heat resistance can be obtained.

Abstract: Apparatus and methods for forming a thread of varying pitch by utilizing a threading assembly which includes a plurality of threading elements having thread cutting or forming portions on the different elements for engaging the work piece at different locations, with the assembly and work piece being driven both rotatively and at the same time axially relative to one another to form the thread. The rate of axial advancement per revolution between the work piece and each of the threading elements is varied, and the elements of the assembly are also shifted axially relative to one another during the rotary and axial movement, to give the thread its varying pitch.

Abstract: A method for the manufacture of a shutter on a piece of flat stock sheet metal material, said shutter having a raised panel of continuous configuration without any cutting of the stock material, said raised panel having an inner perimeter and an outer perimeter, the method consisting of the steps of establishing a pattern for the inner perimeter on the back side of the sheet metal material, establishing a pattern for the outer perimeter line on the front side of the sheet metal material, establishing a pattern of beveled lines between the inner perimeter line and outer perimeter line, said beveled lined pattern being on the back side of the sheet metal material, gripping the sheet metal material about its perimeter between the jaws of a straight edge brake along the sides and top of the sheet metal material in successive steps, rolling the inner perimeter line of the sheet metal stock with a beveled roller along the back of the sheet metal, rolling the front of the sheet metal material along the outer perimet

Abstract: A tube bending apparatus is presented having a bending shoe, two lateral rollers to receive the tubular workpiece, reciprocating power means to advance and retract the bending shoe between the lateral rollers, and a base. The bending shoe has a semi-circular bending channel with lips extending from the top and bottom of the bending channel on the forward portion of the bending shoe, whereby the lips extend beyond the midpoint of the tubular workpiece being bent to prevent crimping or folding. The lateral rollers are mounted in slots in the base to allow for multiple positions.

Abstract: A hinge pivotally moves a closure panel between two positions to open and close an access opening formed in a structure. The hinge includes a mounting plate connected to the structure. A strap is pivotally connected at a first end to the mounting plate and is fixedly connected at a second end to the closure panel. A clock biasing spring is connected at a first end to the mounting plate and has a second end rotationally and radially movable with respect to the first end. A link is pivotally connected at a first end to the strap at a position spaced from the pivot connection of the first end of the strap to the mounting plate.

Abstract: A system for processing steel strips in a hot strip mill includes an apparatus and method for minimizing oxide growth on steel strips and reducing wear on work rolls in the finishing mill. In order to reduce oxide build up, steel strips are sprayed with coolant at selected locations throughout the finishing mill and the surface temperature of the strips is controlled to be within the range of an upper limit (T.sub.u) and a lower limit (T.sub.L) where oxide growth is minimized. Accordingly, wear on the work rolls due to abrasive contact with the steel strips is reduced.

Abstract: A rolling mill comprising an actuator for controlling shapes or conditions of work roll surfaces during rolling and a flatness meter for detecting broadwise flatness of rolled strip to generate an output signal whereby the actuator is operated so as to control the flatness of strip, the output signal being analyzed into a plurality of evaluation indexes. Each of the evaluation indexes is converted by a membership function into a fuzzy quantity having one of a predetermined number of values. These fuzzy quantities are subjected to fuzzy reasoning consisting of a plurality of control rules to set the control value of the actuator.

Abstract: A seal device for a hydroforming press includes a housing having a cylindrical bore and a cylindrical seal carrier slidable within the housing bore. The seal carrier has a bore and a tube support which fit closely on outside and inside of the end of the tube to be hydroformed. An actuator is operable to forcibly move the seal carrier from a retracted position withdrawn away from the end of the tube to an extended position in which the seal carrier is installed over the end of the tube. A resilient elastomeric annular seal is carried by the seal carrier and encircles the outer circumference of the tube with some clearance. A seal actuator carried on the seal carrier compresses the seal upon relative movement between the seal actuator and the seal carrier so that the seal is forced radially inwardly to seal against the tube.

Abstract: A method and apparatus are provided for winding of coils comprising parallel wires onto a former (16) and for the axial insertion of the coils into a stator or rotor of an electric machine using a transfer tool (14). The coils are arranged in offset groups around the periphery of the transfer tool (14) and in order to generate coils so that there is no interruption in the coil wires and the wires are not twisted, and the coil windings are produced on the former (16) by rotating the former (16) jointly and in engagement with the transfer tool (14) in front of a wire guidance element (42) which is held so as to be substantially non-rotatable. During the joint rotation of the former and tool, the coil windings are slipped from the former (16) onto the transfer tool (14) at different relative angular positions.

Abstract: To facilitate safe loading of a thermal sizing mandrel in an elongated channel of open rectangular cross section, a corner rod die is first lowered into a fixture, and then a channel is lowered into the fixture to a vertical position surrounding the die. A mandrel is inserted downwardly through the channel open interior to press corner rods of the die outwardly against the channel corners to elastically reform the channel substantially to a specified geometry. Mandrel insertion is facilitated by inducing vibratory energy therein and by forming shoes in the fixture acting against the channel outer sides to square off the mandrel cross section in advance of mandrel insertion.

Abstract: Briefly, and in accordance with the foregoing, the present invention comprises a roller assembly for use with a bending apparatus for bending conduit and the like. The bending apparatus includes a frame, a bending shoe associated with the frame and a drive device for controllably driving the bending shoe. The roller assembly provides a roller which pivotably adjusts to an outside surface of the workpiece to accommodate variations in the workpiece while it is being bent during a rolling operation. The roller assembly includes a shaft attached and supported by the frame, two pivot segments and two roller dies. The pivot segments are positioned along and spaced apart on the shaft and each has an arcuate surface in a facing orientation with the other pivot segment. The roller dies have facing ends and base ends and a pivot socket formed in the base end. The pivot socket is sized and dimensioned for cooperatively mating with the arcuate surface of the pivot segment.