Patent No. 301534 issued for invention with title ”Fluid machine runner “

In December 2004 an application was filed with the Industrial Ownership Authority for a patent issuance for an invention with the title “Fluid machine runner".
On 25 February, 2010 the Industrial Ownership Authority issued the patent No. 301534.
The above mentioned patent describes a hydraulic solution of a bladed rotational fluid machine (pumps and pump turbines) to provide for the machine operation range extension in the pump mode.  
The advantage consists in the possibility of making use of the existing equipment rehabilitation or repair where it is not possible to use a new runner with a greater diameter. 

The solution is also capable of application when designing rotational bladed machines, such as hydrodynamic pumps, pump turbines, compressors, and air blowers.