Dumbbell
First Claim
1. A dumbbell comprising:
- a hollow grip bar having a connecting end;
a weight adjusting mechanism disposed at each end of the hollow grip bar includinga screw rod extending into said grip bar, and operable to rotate relative to said grip bar about a rotation axis, anda weight carrier extending into said grip bar and engaging threadedly said screw rod so as to be movable axially upon rotation of said screw rod about said rotation axis, said weight carrier having at least a portion thereof capable of extending outwardly through said connecting end of said grip bar;
a rotatable knob at the connecting end of the dumbbell, said rotatable knob being operatively connected with the screw rod such that rotation of the rotatable knob causes rotation of the screw rod which, in turn, generates linear motion of the weight carrier within the receiving portion of the a result of the threaded engagement between the screw rod and the weight carrier; and
a plurality of weights, each of said plurality of weights comprising an elongate notch having a receiving portion for receiving said carrier therethrough; and
wherein there is no threaded engagement between the weight carrier and the weights during movement of the weight carrier through the receiving portion.
2 Assignments
0 Petitions
Accused Products
Abstract
A dumbbell includes: a hollow grip bar having a connecting end; a weight adjusting mechanism including a screw rod extending into the grip bar and operable to rotate relative to the grip bar about a rotation axis, and a weight carrier extending into the grip bar and engaging threadedly the screw rod so as to be movable axially upon rotation of the screw rod about the rotation axis, the weight carrier having a weight-supporting part extending outwardly through the connecting end of the grip bar; and a plurality of weights, each of which is formed with an elongate notch having an enlarged central portion for extension of the weight-supporting part of the weight carrier therethrough.
34 Citations
14 Claims
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1. A dumbbell comprising:
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a hollow grip bar having a connecting end; a weight adjusting mechanism disposed at each end of the hollow grip bar including a screw rod extending into said grip bar, and operable to rotate relative to said grip bar about a rotation axis, and a weight carrier extending into said grip bar and engaging threadedly said screw rod so as to be movable axially upon rotation of said screw rod about said rotation axis, said weight carrier having at least a portion thereof capable of extending outwardly through said connecting end of said grip bar; a rotatable knob at the connecting end of the dumbbell, said rotatable knob being operatively connected with the screw rod such that rotation of the rotatable knob causes rotation of the screw rod which, in turn, generates linear motion of the weight carrier within the receiving portion of the a result of the threaded engagement between the screw rod and the weight carrier; and a plurality of weights, each of said plurality of weights comprising an elongate notch having a receiving portion for receiving said carrier therethrough; and wherein there is no threaded engagement between the weight carrier and the weights during movement of the weight carrier through the receiving portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification