Stéphane “Steve” Willocx
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Inventor / Technology Developer
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  • Stéphane Willocx, also known as Steve Willocx, is an inventor and technology developer whose work spans mechanical systems, thermal energy, water-flow monitoring, and aviation.

  • His work has developed over several decades, from an early fluid engine patented in Belgium in the 1970s, through commercial water-monitoring technology and an ultralight helicopter development program, to his current research into the Willocx Engine, a patented technology based on differential evaporation pressures.

  • His work has consistently been centered on developing practical machines from physical phenomena that can be observed, measured, and engineered.

Early Work — The “Moteur à fluide”

One of Stéphane Willocx's earliest documented inventions was a “Moteur à fluide” (Fluid Engine). The invention was the subject of Belgian Patent No. 822.557, issued in his name. The patent record documents proceedings dated 25 November 1974, with the patent granted and made available to the public on 26 May 1975. At approximately 20 years of age, Willocx was already developing the concept that would become this early fluid-engine project. The invention subsequently progressed beyond the patent document to a physical prototype. An early prototype was constructed and incorporated into a four-wheel vehicle demonstrator, providing a tangible demonstration of the mechanical system described in the original work

  • Belgian Patent No. 822.557 — “Moteur à fluide” (Fluid Engine), issued to Stéphane Willocx. Patent proceedings were recorded on 25 November 1974, and the patent was granted and made public on 26 May 1975.

  • An early physical prototype of the “Moteur à fluide” was constructed and incorporated into a four-wheel vehicle demonstrator. This prototype provided a practical demonstration of the mechanical system beyond the original patent documentation.

  • The “Moteur à fluide” marked an early stage in Willocx’s continuing work on mechanical and thermal systems, leading to later developments in fluid-based and thermal energy technologies.

Water Monitoring and Leak Detection

Willocx later turned his attention to another practical engineering problem: detecting abnormal water flow and preventing water damage. The technology is documented in international patent WO2000065314A1, Monitoring Devices and Control Systems, with priority dating from 21 April 1999. The invention addressed the monitoring of water flow and the detection of abnormal conditions such as leaks. The technology subsequently reached the commercial-product stage in water-management equipment.

  • Commercial product
    Water-monitoring device developed from Willocx’s patented technology for detecting abnormal water flow and potential leaks.

  • Patent
    International Patent WO2000065314A1 — “Monitoring Devices and Control Systems,” invented by Steve Willocx and John Hill, with priority dated 21 April 1999.

  • Technology / application
    The invention was developed to monitor water flow and identify abnormal conditions, including leaks, helping to prevent water-related damage.

SEAWING and Helicopter Development

Another major chapter in Willocx's inventive work involved aviation. Through SEAWING, a company he created in Guadeloupe, he worked on technology relating to ultralight helicopters, including the development of new helicopter designs and associated patented technology. Willocx also developed a two-seat helicopter prototype, which progressed to flight testing.

  • SEAWING  helicopter
    prototype
    during
    flight testing

Development of the Willocx Engine

Building on his earlier work with fluid and thermal systems, Willocx later developed a new engine concept based on differential evaporation pressures. The technology is documented in French patent FR3025254B1, “Moteur à pressions d’évaporation différentielles,” and international patent WO2016034632A1, “Engine with Differential Evaporation Pressures,” with priority dating from 2 September 2014. The technology was subsequently granted U.S. Patent No. 10,851,733 B2 on 1 December 2020. Willocx has continued developing and testing the concept, including experimental work on thermal and mechanical performance.

Willocx Engine prototype