Continuously adjusting headrest device

A seat, comprising:

• a backrest comprising an upper section;
• a headrest comprising a rod;
• and
• a headrest adjustment mechanism, comprising:
• a housing disposable on the upper section and receptive of the rod;
• and
• gripping jaws disposable in the housing to grip the rod such that the rod is securable and adjustable in a height-wise dimension defined along a longitudinal axis of the rod and such that the rod is movable and pivotable,
• wherein each gripping jaw comprises a pad, which is elongate in a height dimension of the rod, to grip a corresponding surface of the rod and an elastic element interposed between an interior surface of the housing and the pad, the pad itself being unconnected directly to the interior surface of the housing but for the elastic element.

A passenger seat, comprising:

• a backrest comprising an upper section;
• a headrest comprising first and second rods;
• and
• first and second headrest adjustment mechanisms each of which comprises:
• a housing disposable on first and second sides of the upper section, respectively, and receptive of the first and second rods, respectively;
• and
• first and second sets of gripping jaws disposable in the housing to grip the first and second rods, respectively, such that the first and second rods are each securable and adjustable in a height-wise dimension defined along respective longitudinal axes of the first and second rods and such that the first and second rods are each movable and pivotable,
• wherein:
• each of the first and second sets of griping jaws comprises multiple gripping jaws arranged about a corresponding one of the first and second rods, and each gripping jaw of each of the first and second sets of gripping jaws comprises:
• a pad, which is elongate in a height dimension of the corresponding one of the first and second rods, to grip a corresponding surface of the corresponding one of the first and second rods;
• and
• multiple elastic elements interposed between an interior surface of a corresponding one of first and second sides of the housing and the pad in a linear arrangement defined along the height dimension of the corresponding one of the first and second rods,
• wherein:
• the pad itself is unconnected directly to the interior surface of the corresponding one of the first and second sides of the housing but for the elastic element, and
• the interior surface of the pad has a similar curvature as the corresponding surface of the corresponding one of the first and second rods and frictional material is applied to the interior surface and has a same curvature as the interior surface.