Patent ID: 8926483
Filing Date: 2015-01-06
Classification: A47C,A63B

Abstract:
1. An apparatus for interchanging balance dome covers, the apparatus comprising: a substantially rigid base for supporting the lower, planer surface of an inflatable balance dome, the lower, planer surface of the inflatable balance dome having a first diameter, the interior of the inflatable balance dome defined by interstitial space forming a plenum of sufficient pressure to bear the weight of a human sitting on it with some deformity occurring in the inflatable balance dome due to compression of the plenum; a dome cover received over the inflatable balance dome, the dome cover having an annular, lower flange about its circumference of a second diameter, the second diameter greater than the first diameter; a cover retention body, the retention body having an outer perimeter substantially the same as the rigid base, the cover retention body further having an annular opening of approximately the first diameter; and a retention mechanism to secure the cover retention body, dome cover and inflatable balance dome to the rigid base whereby the annular, lower flange of the dome cover is compressively sandwiched between the retention body and the rigid base.