(under subclass 690) Mattresses having an aperture or channel permitting circulation of a gas (e.g., air) between the interior and exterior to enhance the comfort of a user.
(1) Note. The aperture or channel means in the mattress must permit substantial movement in and out of the mattress. The use of a porous cover or ticking on a mattress, or the use of a conventional porous foam as the filler, that inherently permit movement of air through their pores, is not sufficient for classification in this subclass.
(2) Note. Excluded from this subclass are slits, grooves, or cutouts on a mattress surface provided for localized altering of the firmness of the mattress.
(3) Note. Excluded from this subclass are mattresses with channels, grooves, peaks, or valleys on a mattress top surface that may inherently provide a ventilation user supporting top surface.
SEE OR SEARCH THIS CLASS, SUBCLASS:
652.1+, for supports with ventilation or forced ventilation.
704, for mattresses in which the handle means are provided with means providing ventilation.
716, for spring mattresses that have edge or border features that may include ventilating means. 727, for slits, grooves, or cutouts on a mattress surface provided for localized altering of the firmness of the mattress.
730, and 736, for channels, grooves, peaks, or valleys on a mattress top surface that may inherently provide a
