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Inflatable self-supporting cover
| Details |
Inventors: Heck, Douglas M.; Alexander, Robert W.;
Assignee:
Primary Examiner: Trettel; Michael F.
Assistant Examiner:
Attorney, Agent or Firm: O Keefe; Joseph J., Wilkinson; Charles A.
An inflatable, self-supporting cover suitable for placement over a body and comprising a top sheet, a bottom sheet and ribs extending between such sheets to form a plurality of compartments extending transverse to the length of the cover. The ribs are formed in the shape of a flattened oval and then fastened between such sheets. A duct extending longitudinally of the length of the cover connects with the compartments and with a source of pressurized air which inflates the compartments, causing them to assume an arch-like shape extending transverse to the length of the cover and spanning said body. An alternative embodiment includes a second cover section fastened to the cover bottom sheet and having a plurality of compartments, each with at least one port therein. The second cover section compartments connect with the duct whereby pressurized air passes to the second cover section compartments and from each port therein to circulate air about the body beneath the cover. |
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DETAILED DESCRIPTION The objects of the invention are accomplished by providing an inflatable, self-supporting, open-ended cover for placement, independent of any external support, over a patient lying on a mattress on a bed.
The cover extends longitudinally of the bed and patient and comprises a support portion and connecting air ducts at each end of the support portion.
One or both such ducts are connected through a tube to a source of air, such as a low pressure blower or compressor.
Air fed from the blower to an air duct and then to the cover support portion causes it to inflate into an arch-like shape, transversely of the bed, with a slightly curved upper, central portion and downwardly and outwardly extending, leg portions, in a manner to bridge the patient.
There is adequate clearance between the underside of the cover and the top of the mattress to provide reasonable clearance for the patient to turn and move without contacting the cover.
The cover comprises a top sheet, a bottom sheet and a plurality of inner spaced ribs which extend transversely of the cover and divide the cover support portion into a plurality of elongated, adjacent compartments that extend transversely of the length of the cover, with an air duct at each end of the compartments.
The cover top and bottom sheets have about the same length and width, the length extending longitudinally of the cover and the width transversely of the cover.
Each of the rib pieces is cut from a single piece of material in the configuration or shape of a generally "flattened oval", as hereinafter defined.
Each rib top, which is the outer periphery of the oval, has a length longer than that of the rib bottom, which is the inner periphery of the oval.
The cover top sheet has a transverse width greater than the length of the top of each rib and opposite end portions of the top sheet extend beyond the ends of each rib.
The cover bottom sheet has a transverse width greater than the length of the bottom of each rib and opposite end portions of the bottom sheet extend beyond the ends of each rib
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