Patent ID: 7364536
Filing Date: 2008-04-29
Classification: A63B

Abstract:
1. A weight bar and two dumbbells, comprising: a weight bar including a substantially cylindrical elongated bar comprising a longitudinal axis, first and second axial ends, and an intermediate section extending between the axial ends; and two dumbbells each including a substantially cylindrical bar with first and second externally threaded end sections, the first end section of each dumbbell being threaded into the weight bar, and the second end section of each dumbbell carrying multiple weight plates secured thereon by a collar threadably engaging the second end section; wherein the substantially cylindrical elongated bar of the weight bar is longer than the substantially cylindrical bar of each of the two dumbbells and is dimensioned to be gripped by a user with two hands that are approximately shoulder width apart; wherein the first and second axial ends each comprise an internally-threaded section disposed substantially along the longitudinal axis and threadably receiving the externally-threaded end of a dumbbell, wherein the internally-threaded sections of the first and second axial ends each comprise box-shaped threads structured to receive varying sizes of external threads, and wherein the box-shaped threads comprise substantially flat thread ends.