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In the mid-1950’s, a young ITW engineer by the name of Oliver Sarri finalized his patent application for a novel gear technology. Relative to the axial position of the pinion as it engages the driven gear, this unique approach essentially ‘split the difference’ between worm and bevel pinion placement. Among other things, the result of this new approach was the following:
Higher tooth engagement, more torque and better packaging than worms
Vastly improved reduction capacity and easier mounting & assembly compared to bevels
While no technology is superior in all application areas, Mr. Sarri’s invention definitively filled a design gap that was present prior to Spiroid. With Spiroid gear technology, Mechanical and Design Engineers now had a new tool in their toolbox.
In 1945 Oliver joined ITW and by the early 1950’s, Oliver and ITW were well on their way to synergizing his interests in gears with ITW’s inventive culture, deep resources, and rich manufacturing history. In 1954-55, the Spiroid family of gears were born – and initial patents granted.
Today, Oliver’s Spiroid family of gears are proudly engineered and manufactured within the Spiroid Division at ITW Heartland – in Alexandria, Minnesota. Spiroid gearboxes and right angle actuators can currently be found in applications around the world ranging from naval weapons handling systems to nuclear power plants to commercial jet wing flap actuators to missile guidance systems to medical devices to commercial & military Unmanned Ground Vehicles (UGVs) and beyond.
