US PATENT SUBCLASS 5 / 731
.~ Nonplanar top surface

Current as of: June, 1999
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5 /   HD   BEDS

690  DF  MATTRESS (FOR WHOLE BODY) {23}
731.~ Nonplanar top surface {5}
732  DF  .~.~> With sideguard
733  DF  .~.~> With head, back, or arm support
734  DF  .~.~> With foot or leg support
735  DF  .~.~> With abdomen or breast support
736  DF  .~.~> With hills or peaks separated by valleys (e.g., egg crate type)

DEFINITION

Classification: 5/731

Nonplanar top surface:

(under subclass 690) Mattress in which a portion of the user contact area has discreet protuberances and indents.

(1) Note. The mattresses in this subclass provide at all times a nonplanar supporting surface and do not have adjustable and repositionable sections that can transform the nonplanar or contoured top surface to a planar top surface.

(2) Note. Excluded from this subclass are invalid beds and surgical supports that may present nonplanar invalid supporting surfaces.

(3) Note. Excluded from this subclass are support means, such as pillowlike devices that are removably useable on top of a mattress (or other body supports).

SEE OR SEARCH THIS CLASS, SUBCLASS:

600+, for invalid beds and surgical supports that may present nonplanar invalid supporting surfaces.

630+, for support means, such as pillowlike devices that are removably useable on top of a mattress (or other body supports). 694+, for mattresses with disparate article (such as a bedpan) that may have cavities or the like to accommodate disparate articles.

706+, for air mattresses that may present a nonplanar user supporting surface.

722+, for mattresses with distinct adjustable or repositionable sections, in which sections may be manipulated to alter the mattress top from a planar to a nonplanar mode.

730, for mattresses that are sectional with regard to firmness that have slits, grooves, cutouts, or cavities to alter their firmness.

944, for devices that have upstanding firm projections.