Chairs and seats – Headrest – Adjustable rectilinearly vertically
Reexamination Certificate
2006-10-17
2006-10-17
Cuomo, Peter M. (Department: 3636)
Chairs and seats
Headrest
Adjustable rectilinearly vertically
Reexamination Certificate
active
07121626
ABSTRACT:
A headrest lock structure has a plurality of lock slots formed in a line along the axial direction of a cross-sectionally circular headrest pole and a lock plate is adapted to fit into one of the lock slots. Each lock slot has a bottom surface protruding in an arc within a region concaved from the outer peripheral surface of the headrest pole by a given distance, and a side surface formed on at least one of the sides of the bottom surface in the axial direction of the headrest pole to extend at approximately a right angle with the bottom surface. The lock plate has an arc-shaped concave portion corresponding to the profile of the bottom surface of each lock slot, and a flat portion corresponding to the side surface of each lock slot. The headrest lock structure can reliably prevent unintentional release of headrest lock.
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Akehi Yoso
Ishikawa Hiroyuki
Matsukawa Ryoji
Abraham Tania
Casella Anthony J.
Cuomo Peter M.
Delta Kogyo Co. Ltd.
Hespos Gerald E.
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