DUMBBELL

• US 20100304940A1
• Filed: 11/27/2008
• Published: 12/02/2010
• Est. Priority Date: 11/29/2007
• Status: Abandoned Application

• Current Assignee: Tomas Svenberg
• Original Assignee: Thomas Svenberg
• Inventors: Hoglund, Per, Svenberg, Tomas
• Application Number:
  US12/744,975
• Publication Number:
  US 20100304940A1
• Time in Patent Office: Days
• US Class Current: 482/108
• CPC Class Codes: A63B 21/00065 by increasing or reducing the number of resistance units
• CPC Class Codes: A63B 21/0728 with means for fixing weights on bars, i.e. fixing olympic discs or bumper plates on bar-bells or dumb-bells
• CPC Class Codes: A63B 21/075 with variable weights , e.g. weight systems with weight selecting means for bar-bells or dumb-bells

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.

Claims

1. 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 a weight disk from a neighbouring weight disk, wherein the weight disks are in the form of substantially planar disks with a substantially circular unbroken peripheral edge and with the openings located centrally, that all connecting means have a longitudinal centre line which coincides with a diameter line for the weight disk, and with the permitted, radial displacement between two neighbouring weight disks.

2. The dumbbell as claimed in claim 1, wherein the connecting means on each weight disk include a depression which is disposed on the one side of the weight disk, is cuneiform in the longitudinal direction and undercut in the transverse direction, and a projection disposed on the opposing side of the weight disk in register with the depression and substantially complementary thereto.

3. The dumbbell as claimed in claim 2, wherein the depression is, at least at its wider end, open towards the peripheral edge of the weight disk.

10. The dumbbell as claimed in claim 2, wherein the connecting means extend along substantially the whole of the diameter of the weight disk.

11. The dumbbell as claimed in claim 2, wherein the weight disk is manufactured from at least one first material constituting a core in the weight disk and one second material, constituting a surface layer for the weight disk;

and that the core also extends over that region of the weight disk where the weight disk displays its connecting means.

12. The dumbbell as claimed in claim 11, wherein the core comprises a substantially circular disk and two substantially circle-segment shaped weight parts which are disposed thereon, and which are disposed on each side of the depression.

13. The dumbbell as claimed in claim 2, wherein the undercut depression has a substantially dovetail-shaped cross section.

14. The dumbbell as claimed in claim 2, wherein the weight disk has means for its positioning about its centre axis in relation to the base assembly;

and that a plurality of weight disks in their thus established positions have their connecting means in engagement with one another; and

that the centre lines of the connecting means are substantially vertical when the base assembly stands on a horizontal substrate.

16. The dumbbell as claimed in claim 2, wherein all weight disks in a base assembly have the same configuration and that they are randomly interchangeable in position in the base assembly as well as being separate and discrete from one another.

4. The dumbbell as claimed in, wherein the connecting means extend along substantially the whole of the diameter of the weight disk.

5. The dumbbell as claimed in, wherein the weight disk is manufactured from at least one first material constituting a core in the weight disk and one second material, constituting a surface layer for the weight disk;

and that the core also extends over that region of the weight disk where the weight disk displays its connecting means.

6. The dumbbell as claimed in claim 5, wherein the core comprises a substantially circular disk and two substantially circle-segment shaped weight parts which are disposed thereon, and which are disposed on each side of the depression.

7. The dumbbell as claimed in, wherein the undercut depression has a substantially dovetail-shaped cross section.

8. The dumbbell as claimed in, wherein the weight disk has means for its positioning about its centre axis in relation to the base assembly;

and that a plurality of weight disks in their thus established positions have their connecting means in engagement with one another; and

that the centre lines of the connecting means are substantially vertical when the base assembly stands on a horizontal substrate.

9. The dumbbell as claimed in, wherein all weight disks in a base assembly have the same configuration and that they are randomly interchangeable in position in the base assembly as well as being separate and discrete from one another.