Patents by Inventor Borislav Zvetkov Martinov

Borislav Zvetkov Martinov 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).

  • Publication number: 20130056305
    Abstract: An elevator has deflecting pulleys above or below a car, fastenings for securing the ends of a cogged belt disposed in an upper portion of a hoistway. A machine is formed by a gearless motor on the shaft of which are assembled at least one cogged pulley made of a single part with helical cogs and with a diameter greater than 100 mm. The machine has a support, a brake, an integrated deflecting pulley, and non-slip rollers, all of these elements being mounted on a base. The machine is in a projection of a counterweight. The counterweight is disposed at a side of the hoistway. The cogged belt has steel reinforcement cables embedded in transparent polyurethane and the cogged portion is covered with a textile mesh. This configuration achieves a reduction of noise level and uniform translation of the car.
    Type: Application
    Filed: September 6, 2012
    Publication date: March 7, 2013
    Inventors: Jose Luis Blanco Sanchez, Borislav Zvetkov Martinov