Patents by Inventor Alexandr Fredeorovich Razin

Alexandr Fredeorovich Razin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5814386
    Abstract: The inventions relate to the field of machine manufacturing and more specifically, to shell-type construction of base members used in aviation engineering and rocketry, which operate under conditions of combined stressed state, to the methods of and mandrels for their manufacture.A load-carrying tube-shell comprises a cellular framework 1 made of spiral and annular strips 4, 5 crossing each other to define layers 3 of systems repeated over the thickness of the wall thereof so that stiffening ribs 6, 7 with criss-crosses 8, 9, 10 are thus formed, and outer coating layers 2 respectively made of unidirectional filaments 11 bound by a cured polymeric binder 12. Damping-absorbing layers 14 of resilient-elastic material such as rubber or polyurethane are disposed between the layers 3.A method of the manufacture of the tube-shell comprises a step of introducing intermediate continuous forming strips 20 placed beneath the layers 4, 5 laid down under tension.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: September 29, 1998
    Assignees: McDonnell Douglas Corporation, Crismb-Cat
    Inventors: Valery Vitalievich Vasiliev, Vladimir Alexandrovich Bunakov, Alexandr Fredeorovich Razin, Mikhail Sergeevich Artjukhov