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Wrist-worn physical activity measurement apparatus

  • US 10,449,415 B2
  • Filed: 12/01/2014
  • Issued: 10/22/2019
  • Est. Priority Date: 12/01/2014
  • Status: Active Grant
First Claim
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1. A wrist-worn physical activity measurement apparatus comprising:

  • an inelastic bracelet comprising a first end, a second end and a plurality of links therebetween, each link being formed at one side to comprise a part and at an opposite side a counterpart interlocking with the part of an adjacent link, except for the links that form the first and second ends, which are only interlocked on one side;

    a flexible casing surrounding the plurality of links, wherein the apparatus is attachable around a curvature of a wrist of a user such that the links and the adjacent links are pivotably lockable in relation to each other in an open position and a closed position in order to wrap and lock around the wrist while the first and second ends of the bracelet remain unconnected in the closed position, wherein the apparatus forms an open loop when in the open position such that it is positionable around the wrist, and the apparatus forms an open loop when in the closed position wrapped and locked around the wrist, wherein the first and second ends of the bracelet are closer to each other in the closed position than in the open position, but are not connected to each other; and

    an electronics module coupled with the bracelet, wherein the part and the counterpart are positioned, dimensioned and adapted such that the links and the adjacent links are pivotable in relation to each by a limited angle.

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