Friction module, friction hinge, and adjustable headrest including the friction module and/or friction hinge

A method for separating an adjustable headrest from a seat, the method comprising:

• moving a release assembly associated with the adjustable headrest from an engaged configuration, in which movement of a headrest guide is limited relative to the adjustable headrest or the seat, to a released configuration, in which angled or pivotable movement of the headrest guide relative to the adjustable headrest or the seat is permitted, thereby allowing the angled or pivotable movement of the headrest guide;
• angling or pivoting the headrest guide relative to the adjustable headrest or the seat, thereby allowing separation of the adjustable headrest from the seat;
• and
• separating the adjustable headrest from the seat.

An adjustable seating system comprising:

• a seat;
• an adjustable headrest releasably coupled to the seat for movement along an adjustment path relative to the seat, the adjustable headrest comprising a head support configured to be movable along the adjustment path relative to the seat;
• a guide fixed or fixable to the head support of the adjustable headrest or the seat, the guide having end portions positioned along the adjustment path;
• and
• a release assembly permitting angled or pivotable movement of at least one end portion of the guide relative to the head support or the seat in a released configuration, thereby permitting separation of the adjustable headrest from the seat.