Patent ID: 8147388

Claim:
A bike trainer for use as a training device when coupled to a conventional bicycle having its rear wheel removed, the bicycle including a frame that includes rear dropouts, the bike trainer comprising: a frame; a first drive member rotatably mounted on a first side of the frame on a laterally extending first axle, the first axle being configured for selective coupling with the rear dropouts of the bicycle; a freewheel mechanism including a first portion engaged with the first drive member, and a second portion engaged with a cassette having a plurality of sprockets each configured to interface with a chain of the bicycle when the bicycle is coupled to the bike trainer, the freewheel mechanism further including an adapter configured to permit the second portion to engage more than one type of cassette, wherein the freewheel mechanism is operative to disengage the first portion from the second portion when the first portion rotates faster than the second portion in a forward direction; a second drive member rotatably mounted on the first side of the frame on a laterally extending second axle; a flexible drive member in driving engagement with and extending between the first drive member and the second drive member; and a fan rotatably mounted on the second axle on a second side of the frame opposite the first side.