A floor care apparatus includes a body having a nozzle assembly and a handle assembly. , from about 10 weight percent to about 50 weight percent of poly having a Tg of from about 52\xb0 C. A processor in the pen body determines relative pen motion based on the speckles. To further accelerate communication, a persistently connected network is employed, together with a new socket layer capable of combining multiple messages from different machines, threads, andor processes into single TCPIP packets to be relayed along message hubs in the persistent network. The curved hook has a nail formed at its free end. In the power unit, an engine body having a crankshaft and a transmission casing accommodating therein a V-belt type transmission are joined.