 Preparations for covering undamaged and/or damaged areas of human or animal skin |
| We claim: 1. A method for dressing wounds to the skin wherein the wound is allowed to breathe, the ... |
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| Laser mist evacuator attachment |
| An object of the present invention is to provide an evacuator attachment for surrounding the ... |
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| Method for making a vascular graft |
| The embodiments of the invention in which an exclusive property or privilege is claimed are defined ... |
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| Head cooling implement |
| The present invention is a head cooling implement comprising a main body consisting of a unit ... |
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| Atherectomy catheter having flexible nose cone |
| According to the present invention, a vascular atherectomy catheter which comprises a flexible tube ... |
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| Breast prosthesis |
| Referring now in more detail to the drawing, in which like numerals refer to like parts throughout ... |
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| Method of producing a breast prosthesis |
| OF THE PREFERRED EMBODIMENT In accordance with the invention FIG. 1 shows a breast prosthesis 10 ... |
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| Soft tissue implant |
| FIG. 1 depicts a soft tissue implant 10 according to the present invention having been implanted ... |
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| Generator for a pulse train of shockwaves |
| What we claim is: 1. In an apparatus for generating pulse trains of shockwaves for the contactless ... |
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| Device consisting of a heterologous collagen tube for use in hollow organ sutures |
| This invention relates to a tubular device of heterologous collagen having considerable advantages ... |
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Process for manufacturing a finished component from an Ni/Ti or Ni/Ti/Cu memory alloy
| Details |
Inventors: Melton, Keith; Mercier, Olivier; Schroder, Gunther;
Assignee: BBC Brown, Boveri & Company, Limited (Baden, CH)
Primary Examiner: Stallard; W.
Assistant Examiner:
Attorney, Agent or Firm: Oblon, Fisher, Spivak, McClelland & Maier
Finished components made from Ni/Ti or Ni/Ti/Cu memory alloys can be manufactured by isothermal or quasi-isothermal ("hot die") working of sections of semifinished product, and by subsequent additional cold-working in the temperature region of the martensitic transformation by flow-turning, tapering, necking, ironing or spinning, it being possible to dispense, completely or at least to a large extent, with an additional machining operation of the metal-cutting type. Manufacture of complicated connecting elements, using the memory effect, for connecting rods, tubes, plates, etc. |
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DETAILED DESCRIPTION The object underlying the invention is to specify a manufacturing process for Ni/Ti and Ni/Ti/Cu finished components, in particular connecting elements, this process being simple and economical, and guaranteeing a high accuracy of reproducibility with reference to the geometry and physical properties of the final product.
This object is achieved, according to the present invention, by a process for manufacturing a finished component from an Ni/Ti or Ni/Ti/Cu memory alloy which comprises processing semifinished product in the form of rod or wire, through several working steps, in the hot state and in the cold state, wherein a blank, in the form of a section of semifinished product, is initially subjected to a hot-working operation in the temperature range from 500.
degree.
to 1,300.
degree.
C.
while simultaneously maintaining a die temperature within the temperature range of the blank and 250.
degree.
C.
, and wherein a workpiece, which has been shaped in this way, is cooled and is subjected to a further cold-working operation, at a temperature below the martensitic transformation point.
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Obesity Surgery 
