Patent ID: 8118717
Filing Date: 2012-02-21
Classification: A63B

Abstract:
1. A dumbbell comprising: a bar having a holding portion and two enlarged reception members connected to two ends of the bar, the bar having a passage axially defined therethrough, each reception member having a space defined therein which opens outward; an axle rotatably extending through the passage and two ends of the axle located in the spaces of the two reception members; a weight fixed to each of the two ends of the axle and each weight including a ridge and a weight body, the ridge connected between the axle and the weight body, the weight body of each weight being a curved body and the ridge connected to a middle of a concaved inside of the weight body, each of the two ends of the axle including a notch and each of the ridges having a tubular portion to which the axle is connected, each tubular portion having a protrusion which is engaged with the notch when the axle is inserted into the tubular portion, and two covers respectively connected to the reception members to cover the two respective spaces.