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Dynamic fit adjustment for wearable electronic devices

  • US 10,149,521 B2
  • Filed: 10/09/2017
  • Issued: 12/11/2018
  • Est. Priority Date: 03/08/2015
  • Status: Active Grant
First Claim
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1. A watch comprising:

  • a housing;

    a processor within the housing;

    a band coupled to the housing, the band configured to hold the housing against a wrist of a user; and

    an extendable portion configured to, in response to an electronic signal from the processor, extend toward the wrist of the user adjust a tightness of the band on the wrist of the user, wherein the extendable portion comprises an element selected from the group consisting of a piezoelectric material, a memory wire, an electroactive polymer, and an electromagnetic coil, wherein the electromagnetic coil is positioned proximate to a permanent magnet and is configured to respond to a current applied to the electromagnetic coil by increasing a force between the electromagnetic coil and the permanent magnet, wherein the extendable portion is within the band and configured to increase a thickness of the band by extending an inner side of the band away from an outer side of the band and toward the wrist of the user.

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