Patents by Inventor Stefan D. Lasarov

Stefan D. Lasarov 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: 4667698
    Abstract: A hydraulic distributor in the body of which there is provided a central hole and supply, a discharge, a working, and bypass conduits, said conduits being connected to the central hole. In central hole there is disposed a plunger which is provided with central and end rings. Between the rings there are shaped profile necks and in one of the ends of the plungers there is provided a bypass groove. The working conduits are arranged perpendicularly to the central hole in the distributor body, and non-return valves are disposed in them. The spaces formed by the profile necks in the walls of the central hole are interconnected by an auxiliary conduit. In one embodiment of the distributor, the auxliary conduit is provided in the central ring of the plunger. In another embodiment of the distributor, the auxiliary conduit is provided in the body of the distributor.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: May 26, 1987
    Assignee: V M E I "LENIN"
    Inventors: Sabi G. Sabev, Stefan D. Lasarov, Dimiter B. Todorov, Darina K. Koparanova, Ivan B. Hristov