Abstract: A gas-powered engine assembly is mounted on a carriage supported over the rear tire of a conventional bicycle. The assembly includes a small internal combustion engine supported on the carriage and a driven polyurethane friction wheel for propelling the rear bicycle tire. The assembly includes a compression spring within the carriage tending to move the carriage and engine drive wheel out of engagement with the bicycle rear tire, and a cable and clutch arrangement for lowering the drive wheel into engagement with the bicycle rear tire. A horizontally moveable strut associated with the carriage is selectively manipulated by a manually operated clutch control, whereby the engine drive wheel is moved from an operative to a non-operative position. The output engine drive arrangement includes a multiple tooth cog located within a pocket formed in the drive wheel, for providing a flexible drive mechanism for accommodating possible defects such as a slightly out of round and/or unbalanced tire and the like.

Abstract: A method for forming a vehicle window assembly includes applying a band of an opaque ceramic enamel material to a predetermined peripheral portion of a sheet of relatively flat glass, and heating the glass to a prefire temperature to fuse the opaque material to the glass. An electrically conductive material is applied to the band in a predetermined pattern to form a pair of bus bars typically along the top and bottom edges of the sheet of glass. The glass is again heated to fire the bus bar material and soften the glass for bending into a desired window shape. A mask is applied to the bus bars for later connection of electrical leads and the sheet of glass is washed prior to the next operation. An electrically conductive film is applied to the second surface of the sheet of glass and electrically connected to the bus bars.