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公开(公告)号：US20210254372A1
公开(公告)日：2021-08-19
申请号：US16791092
申请日：2020-02-14
Inventor： Chun Wai Lai , Kwong Man Pun , Yiu Man Chan
Abstract: A system and a method for a security strap device including a strap; a lock, the lock comprising a locking mechanism; a fixed portion of the strap being secured inside the lock; a free end of the strap insertable into the lock to form a loop in the strap, the lock is configured to lock a portion of the strap to form the loop in the strap, wherein; the locking mechanism comprises a plurality of latches moveable between a locking position and an unlocking position; the plurality of latches engaging one or more locking slots within the lock when in the locking position to the lock the strap within the lock; and wherein the latches are all simultaneously biased toward the locked position and the latches are required to be simultaneously displaced to an unlocking position to unlock the strap.
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2.发明申请公开(公告)号：US20220155092A1
公开(公告)日：2022-05-19
申请号：US17099887
申请日：2020-11-17
Inventor： Ziqiao Lam , Yuan Chang Jiang , Wing Hong Wong , Yan Nei Law , King Sau Wong , Yiu Man Chan , Cheung Fong
Abstract: A method of navigating a visually impaired user, a navigation system and a guiding robot used in the system. The method includes the steps of: receiving a plurality of location referencing signals from a plurality of signal sources; processing the location referencing signals to determine a current location of the user in a predetermined area; planning an optimal path for the user to travel from the current location to a destination location; providing guiding information associated with the optimal path to the user; obtaining a travel instruction from the user to travel along the optimal path; and moving a guiding robot according to the travel instruction provided by the user along the optimal path until the next travel instruction is required to further move the guiding robot.
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