A - Human Necessities – 61 – G
Patent
A - Human Necessities
61
G
A61G 7/05 (2006.01) A61G 7/00 (2006.01) B60B 33/04 (2006.01) A61G 1/04 (2006.01) B60B 33/00 (2006.01)
Patent
CA 2051805
An undercarriage system apparatus is provided for supporting and transporting a fluidized patient support system above and across a floor. The apparatus includes a base frame for carrying the fluidized patient support system, a plurality of heavy duty casters, and a pair of disk springs disposed between each caster and the base frame. Each caster includes a central shaft, a shoulder portion disposed about the central shaft for carrying the load, a wheel carriage rotatably mounted via needle bearings to swivel about the central shaft, and a pair of caster wheels mounted side-by-side to rotate about the wheel carriage. The disk springs of each pair are disposed to contact at their outermost edges. Each disk spring desirably has a maximum load capacity rated at least 50% above the nominal load which the disk spring must carry. The base frame defines a sleeve for receiving each central shaft of each caster. An elongated slot is defined through each sleeve. A threaded opening extends radially into the central shaft of each caster about 1 inch above the shoulder. A bolt screws into the threaded opening and rides within the confines of the slot of the sleeve as the disk springs are compressed and uncompressed during shock absorbing events.
Gowling Lafleur Henderson Llp
Hill-Rom Company Inc.
LandOfFree
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