Interconnecting or Stackable Dumbbells
Dumbbells that interconnect or stack upon each other without the need for a storage rack. The dumbbells include a top engagement member and a bottom engagement member, where the top engagement member is configured and shaped to accommodate and mate with the bottom engagement member. The top engagement member is preferably a protrusion having a generally flat face and a sloping sidewall, and the bottom engagement member is preferably a recess having a generally flat base and a sloping sidewall. The dumbbells may interconnect or stack flush with one another to form a column.
This application claims the benefit of priority of U.S. Provisional Patent Application Ser. No. 61/028,202 filed on Feb. 13, 2008, the entire contents of which is expressly incorporated by reference herein.
FIELD OF THE INVENTIONThe present invention relates generally to the field of exercise and weight training equipment, and more specifically, to dumbbells.
BACKGROUND OF THE INVENTIONDumbbells are commonly used for exercise and weight training in health clubs and home gyms. Small dumbbells, typically no more than ten pounds each, have generally spherical or cylindrical ends connected by a narrower handgrip portion. These dumbbells are often stored in horizontal or vertical racks, where the racks include saddles or similar structures for receiving the generally spherical or cylindrical ends. While these racks may be appropriate for gyms and health clubs, where large numbers of dumbbells are stored and displayed, they are typically unwieldy, expensive and unnecessary for a homeowner or retail location that needs to store or display a smaller number of dumbbells. As an alternative to a costly, space-consuming rack, the homeowner or retail store may simply lay the dumbbells on the floor. Because of their generally spherical ends, however, the dumbbells may roll, creating a potentially dangerous condition. There is a need in the art, therefore, for improved methods of storing dumbbells safely and without the need for a storage rack.
SUMMARY OF THE INVENTIONThe present invention provides a dumbbell comprising two enlarged weight members at either end of a more narrow handle, where each of the weight members comprises a top surface with a top engagement member and a bottom surface with a bottom engagement member, and where the top engagement member and bottom engagement member have complementary shapes, enabling the top engagement member to accommodate and mate with the bottom engagement member of a second dumbbell. In a preferred embodiment, the weight members are generally cylindrical or spherical.
In preferred embodiments the top engagement member is a protrusion located at the approximate center of the top surface of each of the weight members and the bottom engagement member is a recess located at the approximate center of the bottom surface of each of the weight members. In a preferred embodiment, the top surface, the bottom surface, the protrusion and the recess are all generally elliptical, although in other embodiments, all may be generally circular or have any other regular or irregular shape. In a preferred embodiment, the protrusion comprises a generally flat face, and the recess comprises a generally flat base, although in other embodiments, the protrusion may comprise a generally convex face, and the recess may comprise a generally concave base.
In additional embodiments, the present invention provides a pair of dumbbells, where each dumbbell comprises two enlarged weight members at either end of a handle, where each of the weight members comprises a top surface with a first engagement member and a bottom surface with a complementary second engagement member, and where the first engagement member of the first dumbbell accommodates and mates with the second engagement member of the second dumbbell, such that the first dumbbell is capable of stacking horizontally upon the second dumbbell.
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
The disclosed invention provides an interconnecting or stackable dumbbell, such that a plurality of interconnecting or stackable dumbbells may be arranged in a column without the use of a storage rack. The structure of the dumbbell of the disclosed invention also functions to prevent an individual dumbbell from rolling and creating a potentially dangerous condition. Each of the interconnecting or stackable dumbbells of the disclosed invention is configured with complementary top and bottom engagement members, such that the top engagement member of a first dumbbell accommodates and mates with the bottom engagement member of a second dumbbell, and the top engagement member of the second dumbbell accommodates and mates with the bottom engagement member of a third dumbbell, and so on, to form a column. Note that the dumbbells are not limited to any particular weight, and dumbbells of different weights may be stacked together.
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The claims should not be read as limited to the described order or elements unless stated to that effect. Therefore, all embodiments that come within the scope and spirit of the following claims and equivalents thereto are claimed as the invention.
Claims
1. A dumbbell comprising:
- two enlarged weight members at either end of a handle, where each of the weight members comprises a top surface with a first engagement member and a bottom surface with a complementary second engagement member, and where the first engagement member accommodates and mates with a second engagement member of a second dumbbell.
2. The dumbbell of claim 1, where the top surface and the bottom surface each have a generally elliptical shape, and each of the first engagement members is a protrusion located at an approximate center of the top surface and each of the second engagement members is a recess located at an approximate center of the bottom surface.
3. The dumbbell of claim 2, where each of the first engagement members is a generally elliptical protrusion and each of the second engagement members is a generally elliptical recess.
4. The dumbbell of claim 2, where each of the first engagement members is a generally circular protrusion and each of the second engagement members is a generally circular recess.
5. The dumbbell of claim 2, where the protrusion comprises a generally flat face and the recess comprises a generally flat base.
6. The dumbbell of claim 2, where the protrusion comprises a generally convex face and the recess comprises a generally concave base.
7. The dumbbell of claim 1, where the top surface and the bottom surface each have a generally elliptical shape, and where each of the first engagement members is a generally elliptical protrusion comprising a generally flat face and are located at an approximate center of the top surface, and each of the second engagement members is a generally elliptical recess comprising a generally flat base and located at an approximate center of the bottom surface.
8. The dumbbell of claim 1, where the top surface and the bottom surface each have a generally circular shape, and where each of the first engagement members is a generally circular protrusion comprising a generally flat face and are located at an approximate center of the top surface, and each of the second engagement members is a generally circular recess comprising a generally flat base and located at an approximate center of the bottom surface.
9. The dumbbell of claim 1, where the top surface and the bottom surface each have a generally elliptical shape, and where each of the first engagement members is a generally elliptical protrusion comprising a generally convex face and are located at an approximate center of the top surface, and each of the second engagement members is a generally elliptical recess comprising a generally concave base and located at an approximate center of the bottom surface.
10. The dumbbell of claim 1, where the top surface and the bottom surface each have a generally circular shape, and where each of the first engagement members is a generally circular protrusion comprising a generally convex face and are located at an approximate center of the top surface, and each of the second engagement members is a generally circular recess comprising a generally concave base and located at an approximate center of the bottom surface.
11. The dumbbell of claim 1, where each of the first engagement members comprises a generally flat face and a generally vertical sidewall between the face and the top surface, and where each of the second engagement members comprises a generally flat base and a generally vertical sidewall between the base and bottom surface.
12. The dumbbell of claim 1, where each of the first engagement members comprises a generally convex face and a generally vertical sidewall between the face and the top surface, and where each of the second engagement members comprises a generally concave base and a generally vertical sidewall between the base and bottom surface.
13. A pair of dumbbells, each dumbbell comprising:
- two enlarged weight members at either end of a handle, where each of the weight members comprises a top surface with a first engagement member and a bottom surface with a complementary second engagement member;
- where the first engagement member of the first dumbbell accommodates and mates with the second engagement member of the second dumbbell, such that the first dumbbell is capable of stacking horizontally upon the second dumbbell.
14. The pair of dumbbells of claim 12, where each of the top surfaces and each of the bottom surfaces have a generally elliptical shape, and where each of the first engagement members is a protrusion located at an approximate center of the top surface and each of the second engagement members is a recess located at an approximate center of the bottom surface.
15. The pair of dumbbells of claim 13, where each of the first engagement members has a generally elliptical shape and each of the second engagement members has a generally elliptical shape.
16. The pair of dumbbells of claim 12, where each of the top surfaces and each of the bottom surfaces have a generally elliptical shape, and where each of the first engagement members is a generally elliptical protrusion having a generally flat face located at an approximate center of the top surface and each of the second engagement members is a generally elliptical recess having a generally flat base located at an approximate center of the bottom surface.
17. The pair of dumbbells of claim 12, where each of the top surfaces and each of the bottom surfaces have a generally elliptical shape, and where each of the first engagement members is a generally elliptical protrusion having a generally convex face located at an approximate center of the top surface and each of the second engagement members is a generally elliptical recess having a generally concave base located at an approximate center of the bottom surface.
18. A dumbbell comprising:
- two generally cylindrical weight members at either end of a handle, where each of the weight members comprises
- a generally elliptical top surface with a generally elliptical first protrusion having a face and a sidewall located between the top surface and the face, the first protrusion located at an approximate center of the top surface, and
- a generally elliptical bottom surface with a complementary generally elliptical second protrusion having a base and a sidewall located between the bottom surface and the base, the second protrusion located at an approximate center of the bottom surface, and
- where the first protrusion accommodates and mates with a second protrusion of a second dumbbell.
19. The dumbbell of claim 17, where the first protrusion has a generally convex face and the second protrusion has a generally concave base.
20. The dumbbell of claim 17, where the first protrusion has a generally flat face and the second protrusion has a generally flat base.
Type: Application
Filed: Feb 13, 2009
Publication Date: Aug 13, 2009
Inventors: George Kessler (Taftville, CT), Michael Savage (Charlton, MA)
Application Number: 12/371,202
International Classification: A63B 21/072 (20060101);