Abstract: A new and improved method and apparatus for bumper pool adds considerably to the interest and challenge of playing the game. The bumper pool game may be played on larger tables, as compared to conventional bumper pool, with more balls, offering options for players with differing skill levels. The bumper pool game may provide for a variety of different shaped and sized bumpers. The bumper pool table may be designed for coin-operation by a ball return stop mechanism and controls the release of the balls to their respective sides of the table. A ball return set-up may return the balls to their respective ends of the table for quick and easy set up for playing the next game.

Abstract: Apparatus for mixing aqueous foam with a slurry of gypsum and water. A cylindrical housing includes, in its upper end, an inlet for a slurry and a helical diverter for directing the slurry in a downward spiral flow path. An inlet for aqueous foam in located in said diverted and directs the foam into the incoming slurry. An annular flow restrictor is located in the lower end of the housing. Turbulence resulting from diversion of the incoming slurry from linear flow to a downward spiral flow path and from changes in spin diameter and speed through the flow restrictor uniformly mix foam with the slurry.

Abstract: Apparatus for mixing aqueous foam with a slurry of gypsum and water. A cylindrical housing includes, in its upper end, an inlet for a slurry and a helical diverter for directing the slurry in a downward spiral flow path. An inlet for aqueous foam in located in said diverter and directs the foam into the incoming slurry. An annular flow restrictor is located in the lower end of the housing. Turbulence resulting from diversion of the incoming slurry from linear flow to a downward spiral flow path and from changes in spin diameter and speed through the flow restrictor uniformly mix foam with the slurry.