Weight-lifting bar
A weight-lifting bar is provided. The weight-lifting bar includes a tubular member having a first end portion and a second end portion. The tubular member further includes an internal region. The weight-lifting bar further includes a plurality of balls disposed in the internal region of the tubular member that at least partially fills the internal region. The weight-lifting bar further includes a first endcap member configured to be coupled to the first end portion, and a second endcap member configured to be coupled to the second end portion.
1. A weight-lifting bar, comprising:
a metal tubular member having a first internal region;
a plastic tubular member having a first end portion and a second end portion, the plastic tubular member further having a second internal region, the plastic tubular member being disposed in the first internal region, a length of the metal tubular member being equal to a length of the plastic tubular member;
a first layer coupled to an exterior surface of the metal tubular member;
a plurality of balls disposed in the second internal region of the plastic tubular member that at least partially fills the second internal region;
a first endcap member configured to cover an opening in the first end portion, the first endcap member having a first body portion and a first cap portion, the first body portion of the first endcap member being disposed and press-fit into the first end portion of the plastic tubular member within the second internal region, the first body portion of the first endcap member being constructed of a rubber compound, the first cap portion of the first endcap member contacting an end of the first end portion and a first end of the metal tubular member; and
a second endcap member configured to cover an opening in the second end portion.
2. The weight-lifting bar of claim 1 , wherein the first body portion of the first endcap member has an external surface defining a plurality of ridges, the plurality of ridges contacting an inner surface of the plastic tubular member.
3. The weight-lifting bar of claim 1 , further comprising a sound reducing layer disposed between the metal tubular member and the plastic tubular member, the sound reducing layer being constructed of an elastomeric material.
4. The weight-lifting bar of claim 1 , wherein the first layer is a foam layer.
5. The weight-lifting bar of claim 1 , wherein the plurality of balls are a plurality of solid metal balls.
6. The weight-lifting bar of claim 1 , wherein a weight of the weight-lifting bar is in a range of 2-25 pounds.
7. The weight-lifting bar of claim 1 , wherein the second endcap member has a first body portion and a first cap portion, the first body portion of the second endcap member being disposed and press-fit into the second end portion of the plastic tubular member within the second internal region, the first body portion of the second endcap member being constructed of a rubber compound, the first cap portion of the second endcap member contacting an end of the second end portion and a second end of the metal tubular member.
8. The weight-lifting bar of claim 1 , wherein a longitudinal length of the first body portion of the first endcap member is greater than a diameter of each ball of the plurality of balls.
9. The weight-lifting bar of claim 8 , wherein the first body portion of the first endcap member is configured to substantially fill the second internal region proximate to the first end portion.
10. The weight-lifting bar of claim 8 , wherein a maximum diameter of the first body portion of the first endcap member is greater than a diameter of the second internal region prior to the first body portion of the first endcap member being press-fit into the first end portion.
11. A weight-lifting bar, comprising:
a metal tubular member having a first internal region;
a plastic tubular member having a first end portion and a second end portion, the plastic tubular member further having a second internal region, the plastic tubular member being disposed in the first internal region, a length of the plastic tubular member being equal to a length of the metal tubular member;
a first layer coupled to an exterior surface of the metal tubular member;
a plurality of solid metal balls disposed in the second internal region of the plastic tubular member that at least partially fills the second internal region;
a first endcap member configured to cover an opening in the first end portion, the first endcap member having a first body portion and a first cap portion, the first body portion of the first endcap member being disposed and press-fit into the first end portion of the plastic tubular member within the second internal region, the first body portion of the first endcap member being constructed of a rubber compound, the first body portion of the first endcap member being configured to substantially fill the second internal region proximate to the first end portion, the first cap portion of the first endcap member contacting an end of the first end portion and a first end of the metal tubular member; and
a second endcap member configured to cover an opening in the second end portion.
12. The weight-lifting bar of claim 11 , wherein the first endcap member has a first elastomeric sound reducing member disposed in the second internal region proximate to a first end of the plastic tubular member, the first elastomeric sound reducing member configured to contact at least one ball of the plurality of solid metal balls.
13. The weight-lifting bar of claim 12 , wherein the second endcap member has a second elastomeric sound reducing member disposed in the second internal region, the second elastomeric sound reducing member configured to contact at least one ball of the plurality of solid metal balls.
14. The weight-lifting bar of claim 11 , wherein a weight of the weight-lifting bar is in a range of 2-25 pounds.
15. The weight-lifting bar of claim 11 , further comprising an elastomeric sound reducing layer disposed between the metal tubular member and the plastic tubular member.