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Slot-based fenestration unit monitoring apparatus and methods

  • US 10,234,307 B1
  • Filed: 12/30/2015
  • Issued: 03/19/2019
  • Est. Priority Date: 01/05/2015
  • Status: Active Grant
First Claim
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1. A fenestration unit monitoring apparatus configured for retrofitting an existing fenestration unit having a lock assembly located in a lock assembly slot in a frame member of a fenestration unit panel, the fenestration unit monitoring apparatus comprising:

  • a device body configured for insertion into the lock assembly slot in the frame member of the fenestration unit panel when the lock assembly slot is occupied by the lock assembly, wherein the device body comprises a leading edge, a trailing edge, a first end located between the leading edge and the trailing edge, and a second end located between the leading edge and the trailing edge;

    a bezel attached to the device body and positioned along the trailing edge of the device body such that device body and bezel are configured for insertion of the leading edge of the device body into the lock assembly slot ahead of the trailing edge;

    a lock cavity defined in the leading edge of the device body between the first and second ends, wherein the lock cavity is positioned and sized to receive a portion of the lock assembly located in the lock assembly slot of the frame member when the device body is located in the lock assembly slot of the frame member with the bezel located proximate a surface of the frame member;

    a monitor body attached to the device body, wherein the monitor body comprises;

    a lock status sensor operably attached to the monitor body, wherein the lock status sensor is configured to detect when the lock assembly is in a locked state;

    a panel position sensor attached to the monitor body, the panel position sensor configured to detect a position of the fenestration unit panel;

    a controller attached to the monitor body, wherein the controller is operably connected to the lock status sensor and the panel position sensor, and wherein the controller is configured to;

    receive a lock signal from the lock status sensor when the lock assembly is in the locked state;

    receive a panel position signal from the panel position sensor when the panel position sensor detects presence of the second panel; and

    provide an indication of a status of one or both of the lock signal and the panel position signal.

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