Patent ID: 7827877
Filing Date: 2010-11-09
Classification: B21H,Y10T

Abstract:
1. A gear-rolling apparatus, assembled by a pair of gear units, each of the gear unit comprising: a rolling portion; a rolling shaft extending from the rolling portion; and a clicking column and two location columns extending from edges of a free end of the rolling shaft along an axle direction of the rolling shaft, the clicking column and the two location columns spaced out from each other to form three grooves therebetween, a clicking clasp extending inward from the top of the clicking column, the clicking clasp having an inclined inner surface which inclines inward from top to bottom, the two rolling shafts inserted into the hole of the base, the clicking column of one of the rolling shafts mating the groove opened between the location columns of the other rolling shaft, the location columns of one of the rolling shafts mating the grooves opened between the clicking column and the location columns of the other rolling shaft respectively, bottom surfaces of the two clicking clasps being against each other.