公开(公告)号：US09943172B2

公开(公告)日：2018-04-17

申请号：US14805818

申请日：2015-07-22

申请人： Hill-Rom Services, Inc.

发明人： Charles A Lachenbruch ,  Rachel L Williamson ,  Timothy Joseph Receveur ,  Christopher R O'Keefe

IPC分类号： A47C17/00 ,  A47C21/04 ,  A47C31/10

CPC分类号： A47C21/044 ,  A47C21/04 ,  A47C21/042 ,  A47C21/046 ,  A47C31/105

摘要： A bed comprises a mattress and a topper resting atop the mattress and extending in longitudinal and lateral directions. The topper has a fluid flowpath having an inlet and an outlet. The flowpath exhibits a nonuniform resistance to fluid flow in at least one of the longitudinal and lateral directions. The bed also includes a blower connected to the inlet for supplying air to the flowpath. The resistance may be a monotonically varying resistance to fluid flow in at least one of the longitudinal and lateral directions and configured to preferentially drive fluid flow through the topper so that a larger proportion of the fluid flowing through the topper flows under a target region and a relatively smaller portion bypasses the target region.