Patents by Inventor Mikhail I. Chunikhin

Mikhail I. Chunikhin 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).

  • Hoisting apparatus
    Patent number: 4703835
    Abstract: A hoisting apparatus comprising a hydraulic cylinder (1) a piston (3) whereof is connected to a load-handling attachment via a pliable member (6) which passes through a sealing device (9) that is located outside the cylinder (1) and consists of two consecutively arranged chambers (10, 11) separated by seals (12, 13, 14). The chamber (10) next to the cylinder space is filled with a sealing fluid whose viscosity is higher than the viscosity of the hydraulic fluid and the other chamber (11) is connected to a separator (18) adapted to separate the hydraulic fluid from the sealing fluid and to feed them to the space (4) of the hydraulic cylinder and the chamber (10) of the sealing device (9), respectively.
    Type: Grant
    Filed: June 26, 1986
    Date of Patent: November 3, 1987
    Assignee: Upravlenie Po Montazhu, Demontazhu I Remontu Gornoshakhtnogo Oborudovania "Spetsshakhtomontazh"
    Inventors: Sergei B. Negrutsky, Vladimir G. Churkin, Mikhail I. Chunikhin