Stock Wars: Inventory Competition in a Two-Echelon Supply Chain with Multiple Retailers

This invention relates to a bath unit for use by, for example, invalids and includes a hollow buoyant platform mounted in the bath receptacle for constrained upright movement relative thereto with the platform being maintained in a substantially horizontal position when stationary or during upright movement. The upright movement of the platform relative to the bath receptacle when filled with water is achieved by controlling an inflow or outflow of bath water into or out of the platform. At the upper limit of upright movement, the top surface of the platform is substantially level with the top edges of the bath receptacle; however, since the platform is prevented from further upward movement by arresting means, the upward force of bath water, displaced by the platform, on the empty buoyant platform enables the platform to receive a body of an invalid thereon without causing the platform to move downward until the upward force of bath water has been removed by the inflowing of the bath water into the platform.

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