Discover how inventor Nimo Rotem revolutionised professional tools with Nemo Power Tools, changing industries worldwide through innovation.
Behind every groundbreaking invention is a mind that refuses to settle for “good enough.” In the world of professional-grade power tools , that mind belongs to Nimo Rotem—a mechanical engineer, inventor, and the creative force behind two of the most disruptive tools in recent history: the Nemo Power Tools underwater tool line and the world-famous GRABO vacuum-lifting system.
From navy-grade engineering to global dominationNimo Rotem has changed the power tools industry with his innovationBefore changing the game for tradespeople worldwide, Nimo was quietly working on tools that very few people even knew existed—custom-built equipment for scientific and military applications, including the U.S. Navy and Israeli Defense Forces. These were no ordinary tools. They were engineered to perform underwater, in high-pressure, zero-visibility environments where failure isn’t an option.That’s where Nemo Power Tools began: with the challenge of creating tools that could be used by divers, underwater welders, and rescue teams without compromising power, reliability, or safety. The science behind it is no small feat.The science behind the innovation: Pressurizing underwater toolsTo function underwater, power tools must overcome the immense pressure exerted by the surrounding water. Nimo’s breakthrough involved a technique where the tool’s internal chamber is pressurized with air to match or exceed the surrounding water pressure. This equalization prevents water from entering the motor or battery compartment, allowing drills, grinders, and impact drivers to function up to 50 meters below the surface without flooding or power loss.The result? A rugged, reliable tool that performs underwater just as well as it does on land. This patented system propelled Nemo Power Tools into niche markets where no other commercial tool brand dared to go.Then came GRABO: The vacuum lifter that changed the industryBut Nimo didn’t stop at the ocean floor. On a rock climbing trip, Nimo had an “ah ha!” Moment while climbing – what if there was a way to grip on to or “grab” on to the rocks that are textured. He took his obsession with solving tough problems and turned his focus to creating this device, this journey ultimately led him to the construction site—where moving heavy, awkward materials like tile, glass, stone, and drywall had long been a frustrating and injury prone task.Enter GRABO, the world’s first portable electric vacuum lifter. Small enough to fit in one hand, strong enough to lift hundreds of pounds, and smart enough to grip onto rough, uneven, even porous surfaces that traditional suction cups can’t touch.The genius lies in how it works.GRABO and the power of negative pressure – Murray’s law in actionThe GRABO tool uses an electric vacuum pump to generate negative pressure between its foam seal and the surface it’s placed on. This creates a vacuum chamber, reducing the internal pressure below atmospheric levels and forming a powerful seal.At the heart of this process is a principle known as Murray’s Law, which is typically used to describe the optimal branching of blood vessels, but also helps explain efficient fluid dynamics and pressure distribution in vacuum systems. In the case of GRABO, Murray’s Law guides the flow rate and distribution of pressure across the foam seal—ensuring maximum hold while minimizing energy consumption.The result? A lifter that grips securely onto almost any material—glass, drywall, rough stone, sheet metal, wood, even concrete—and allows workers to lift, carry, and install with unmatched ease and safety. It’s not just a tool. It’s a revolution.Maintaining a seal with porous materialsPorous materials are a challenge. The small holes in some wood, concrete, and ceramic materials let air escape from most vacuum technologies.Suction often fails on uneven surfaces and porous materials. GRABO® technology uses patented air-balancing technology to bring air into the vacuum at a faster rate than it can escape.Using the principles of Murray’s Law, we design GRABO® tools for maximum performance. Our vacuum pump rate is so high, GRABO® tools can handle the most complex surfaces without losing suction.We determine the flow rate for porous materials using a formula based on Murray’s Law. Our extensive research into the properties of porous material helps us create the vital technology required for the GRABO® to create a safe and powerful vacuum seal. You don’t need to understand how GRABO® works to enjoy a faster work rate and less body strain.From engineering lab to construction sites worldwideToday, GRABO is used in over 45 countries and sold by more than 150 global distributors, becoming a trusted name among contractors, tile installers, glaziers, landscapers, woodworkers, metal fabricators and construction pros of all kinds.Nimo Rotem has proven that a brilliant mind, paired with a deep understanding of engineering physics and a fearless desire to improve the lives of workers, can truly change the way the world builds.He didn’t just invent a tool.He invented a movement—from the depths of the ocean to the heart of the job site. Since GRABO owns the patent to electric suction technology, GRABO is just getting started, we’re thinking of new ways to bring a solution to problems outside of construction.
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