Segway PT, referred to during development and initial marketing as the Segway HT, was developed from the self-balancing iBOT wheelchair which was initially developed at University of Plymouth, in conjunction with BAE Systems and Sumitomo Precision Products.
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In September 2003, the Segway HT PT was recalled, because if users ignored repeated low battery warnings on the PTs, it could ultimately lead them to fall.
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In March 2014, Segway HT announced third generation designs, including the i2 SE and x2 SE sport, new LeanSteer frame and powerbase designs, with integrated lighting.
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Ninebot Inc, a Beijing-based transportation robotics startup and a Segway HT rival, acquired Segway HT in April 2015, having raised $80M from Xiaomi and Sequoia Capital.
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Segway HT requested the blocking of imports of competing scooters into the United States.
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In June 2020, Ninebot, the owner of the Segway HT brand, announced that it would no longer make the namesake two-wheeled, self-balancing product.
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Factors contributing to the end of production include the price, and the learning curve in learning to balance on a Segway which has led to notable accidents involving Usain Bolt, George W Bush and the Segway Company owner Jimi Heselden.
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Dynamics of the Segway HT PT are similar to a classic control problem, the inverted pendulum.
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In 2011, the Segway HT i2 was being marketed to the emergency medical services community.
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Segway HT miniPro is available to be used as the mobility section of a robot.
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