Abstract: A gear-driven docking apparatus for removable mass-storage drives comprises a guide rail, mounted inside a computer chassis, and a drive carrier, bearing a mass-storage drive. The drive carrier includes an alignment groove for slidingly receiving the guide rail and a gear train for engaging a rack profile formed at the proximal end of the guide rail, The rack profile and the gear train incorporate a mechanism that provides gear-and-rack synchronization under all operating conditions. Data and power connectors of the mass-storage drive are terminated to a printed circuit board that is movably attached to the drive carrier. The circuit board merges the separate power and data connectors into a single docking connector having registration pins.

Abstract: Improvements in fireplace heaters or devices for efficiently extracting heat from a conventional fireplace; a fireplace enclosure with novel heat exchange and absorption means; a prefabricated installation for use in a conventional fireplace to obtain the maximum utilization of the heat generated by wood, coal or other combustion in a conventional fireplace; a fireplace screen incorporating a forced air draft system associated with a heat absorbing plenum unit and exchanger associated therewith; a forced air fireplace heating system with complete draft control.

Abstract: A decorative telephone housing in the form of a rectangular, hollow shell having top and side walls and open at the bottom, the shell partially enclosing an elongated bar pivoted at one end within the shell and extending across the interior with its free end protruding through an opening in a side wall of the shell, and a cradle for a handset fixed to the free end of the bar outside of the shell. When the shell is secured to the base of a telephone instrument, the bar rests on the switch actuating member within the shell, so that rocking movements of the bar, engendered by lifting the handset from and subsequently returning the handset to the cradle, cause the actuating member to switch the instrument to on and off condition.