Weight adjustable dumbbell

• US 20040198569A1
• Filed: 05/08/2003
• Published: 10/07/2004
• Est. Priority Date: 04/02/2003
• Status: Abandoned Application

• Current Assignee: NorthPole Limited
• Original Assignee: NorthPole Limited
• Inventors: Sanford-Schwentke, Anthony, Kim, Sungho, Patel, Arvin
• Application Number:
  US10/434,986
• Publication Number:
  US 20040198569A1
• 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 21/063 Weight selecting means
• CPC Class Codes: A63B 21/0726 Dumb bells, i.e. with a central bar to be held by a single hand, and with weights at the ends
• 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
• CPC Class Codes: A63B 2208/12 specially adapted for children

Abstract

An adjustable dumbbell, comprises a primary section including a plurality of end structures, a handle and a weight selection structure configured to be advanced from the primary section and having a weight selection mark showing the amount of weight selected; and a plurality of nested weights each constructed from a pair of corresponding attached plates arranged in a longitudinal stack and each plate having a corresponding structure configured to accept the weight selection structure. In one embodiment, the weight selection structure includes a gear attached to the primary section for rotation by a user and a toothed rod coupled to the gear which is displaced into the nested weights a distance corresponding to the mark showing the amount of weight selected.

Claims

1. An adjustable dumbbell, comprising:

a primary section including a plurality of end structures, a handle and a weight selection structure configured to be advanced from the primary section and having a weight selection mark showing the amount of weight selected; and

a plurality of nested weights each constructed from a pair of corresponding attached plates arranged in a longitudinal stack and each plate having a corresponding structure configured to accept the weight selection structure.

2. The adjustable dumbbell of claim 1, wherein:

the weight selection structure includes a gear attached to the primary section for rotation by a user and a toothed rod coupled to the gear which is displaced into the nested weights a distance corresponding to the mark showing the amount of weight selected.

3. The adjustable dumbbell of claim 1, wherein:

the corresponding structure of each plate that is configured to accept the weight selection structure is a hole.

4. The adjustable dumbbell of claim 2, wherein:

the corresponding structure of each plate that is configured to accept the weight selection structure is a hole.

5. The adjustable dumbbell of claim 1, wherein:

the primary section includes a plurality of cross members configured to support the end structures.

6. The adjustable dumbbell of claim 2, wherein:

the primary section includes a plurality of cross members configured to support the end structures.

7. The adjustable dumbbell of claim 5, wherein:

the weight selection structure includes a first weight selector disposed within a first cross member for coupling plates adjacent to a first end structure of the primary section, and a second weight selector disposed within a second cross member for coupling plates adjacent to a second end structure of the primary section.

8. The adjustable dumbbell of claim 7, wherein:

the first weight selector includes a first gear attached to the primary section for rotation by a user and a first toothed rod coupled to the first gear which is displaced into a first side of the nested weights a distance corresponding to the mark showing the amount of weight selected; and

the second weight selector includes a second gear attached to the primary section for rotation by the user and a second toothed rod coupled to the second gear which is displaced into a second side of the nested weights a distance corresponding to the mark showing the amount of weight selected.

9. The adjustable dumbbell of claim 8, wherein:

the corresponding structure of each plate that is configured to accept the weight selection structure is a hole.

10. The adjustable dumbbell of claim 1, wherein:

the plates are marked showing the amount of weight corresponding to the respective plate when coupled to the primary section.

11. The adjustable dumbbell of claim 2, wherein:

the plates are marked showing the amount of weight corresponding to the respective plate when coupled to the primary section.

12. The adjustable dumbbell of claim 7, wherein:

the plates are marked showing the amount of weight corresponding to the respective plate when coupled to the primary section.

13. The adjustable dumbbell of claim 8, wherein:

the plates are marked showing the amount of weight corresponding to the respective plate when coupled to the primary section.

14. The adjustable dumbbell of claim 5, wherein:

selected cross members include a cushion while other cross members do not include a cushion.

15. The adjustable dumbbell of claim 7, wherein:

selected cross members include a cushion while other cross members do not include a cushion.

16. The adjustable dumbbell of claim 8, wherein:

selected cross members include a cushion while other cross members do not include a cushion.