A wheel assembly of an exerciser includes a wheel-mounting member, and an annular wheel. The wheel-mounting member includes a tubular peripheral wall with an inner portion and an outer portion which has a closing end wall. The peripheral wall has an outer outward flange unit near the end wall and an...http://www.google.co.uk/patents/US5651754?utm_source=gb-gplus-sharePatent US5651754 - Wheel assembly adapted to be mounted on a wheel-bearing tube of an exerciser without the need for a locking bolt
