Dumbbell

Abstract

A dumbbell with a selectable number of weight disks includes a handle with pins projectable in opposing directions, a base assembly for accommodating two sets of weight disks standing on edge and provided with openings. The projection lengths of the pins are stepwise selectable in order to permit selection of the number of weight disks supported on the handle. Neighbouring weight disks have mutually engaging connecting arrangements which axially interconnect the weight disks but which permit radial separation. The weight disks are planar with a circular, unbroken peripheral edge and with the openings located centrally. All connecting arrangements have a longitudinal centre line which coincides with a diameter line for the weight disks and with the permitted radial displacement direction between two neighbouring weight disks.

Description

BACKGROUND AND SUMMARY[0001]The present invention relates to a dumbbell with weight disks, where the number of weight disks on the dumbbell is selectable, and the weight disks may be accommodated standing upright in two sets in a base assembly, the weight disks having through-going openings which are located along a straight line with the weight disks standing in the base assembly, and the weight disks have mutually cooperating connecting means which are disposed, in an axial direction of the dumbbell, to interconnect neighbouring weight disks, but in a radial direction to permit separation of one weight disk from a neighbouring weight disk.[0002]U.S. Pat. No. 6,416,466 shows, in FIGS. 4, 5, 7 and 9 a dumbbell with a number of weight plates standing upright in a base assembly. The weight plates display a highly irregular configuration and have a radial groove into the centre. Between the weight plates, there is disposed in the base assembly a handle, from which rods are extendable i...

AI Technical Summary

Benefits of technology

[0005]It is desirable to improve the dumbbell described by way of introduction in such a manner that the drawbacks inherent in the prior art dumbbells are obviated. In particular, it is desirable to design the weight disks included in the dumbbell such that they are satisfactory from the point of view of mechanical strength, that they will have their points of gravity more or less centred and that the dumbbell in its entirety will also be rotationally symmetrical, at least as regards the position of its point of gravity.

Problems solved by technology

The design and construction according to this United States Patent Specification is complex and entails that the position of the point of gravity for a combined dumbbell would probably be a considerable distance outside a longitudinal centre axis to the dumbbell.

In addition, the radial grooves in the weight plates entail problems of a mechanical strength nature.

Further, the dumbbell according to this US Patent Specification has a U-shaped handle with a bottom which further entails that the point of gravity of the dumbbell is offset in the radial direction and which moreover may involve a hazard to the wrist of the user of the dumbbell if the dumbbell were to rotate in the hand holding it.

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