A Brief History of Knob Engines

1988 – Inventor and designer Vaclav Knob starts working on the Birotary Engine idea development
2010 – Company KNOB ENGINES s.r.o. established.
2014 – VC investor Jiri Drahovzal acquired minority share of the company providing critical funds for prototypes assembly and testing
2014 – Two Czech patents received for the Birotary Engine and its Sealing System

2015 – First Birotary Engine prototype manufactured, then tested at the CVUT Centre of Vehicles for Sustainable Mobility
2016 – Two U.S. patents received for the Birotary Engine and its Sealing System
2017 – Patents received in Canada, EU, Australia, South Africa, Japan, China and Eurasia, with patents pending in several other economically most important countries of the world.
2017 – Birotary Engine launch and first presentation for industry experts and invited guests – representatives of the Czech Technical University, Czech Academy of Science, Czech Space Office, airplane and propeller manufacturers, car makers, aerospace governing institutions and selected media representatives
2018 – Managing Director Jiri Drahovzal acquired majority share of the company



Managing Director Jiri Drahovzal presenting to distinguished guests



Vaclav Knob with prof. Macek and Mr. Theiner from CTU                   Jiri Drahovzal and Jiri Kolar, Director of Czech Space Office